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geekhack Community => Keyboards => Topic started by: sixty on Wed, 19 August 2009, 07:18:47

Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Wed, 19 August 2009, 07:18:47
(http://www.netwellness.org/healthtopics/dentalseniors/dentures.jpg)
"Let me see that keyboard, dear."

This came to my mind when I was reading a random unrelated German article that mentioned how some kid got sick by chewing on nasty lego bricks.. anyway the end of the article had some tips for parents on how to clean Lego bricks, so their kids don't die from infections (and rather choke on them instead, I guess). One of the tricks was to put them in a huge bowl with some dental cleaning tablets.

I figured that Lego bricks and keycaps are close enough.. so I gave it a try today with some boards.

(http://ecx.images-amazon.com/images/I/41%2BVMqk7oJL.jpg)

I used the "Kukident Active Plus" brand - which should be easily available in Europe. They came in at 2,40 Euros for 33 Tabs. Pretty good deal. If you already lost all your teeth and are using dentures anyway then you are probably already set.

Here is what I did:

(http://t.oomuch.info/src/1250683707009.jpg)
1) Get some big bowl, put in at least 4 or 5 tabs, depending on how many keycaps you plan to clean.

(http://t.oomuch.info/src/1250683800307.jpg)
2) Add the keycaps, make sure they are evenly distributed around the tabs.
Now here is the cool part - I also added in all stabilizers as well, because the tablet box claims: "Our corrosion preventive special formula protects your dentures metal parts from rust and corrosion." - What more could we ask for?

Note: I had to add another tab here since the keycaps turned out to be more than expected (damn terminal boards!)

(http://t.oomuch.info/src/1250683886290.jpg)
3) Add hot water. A lot of bubbles will start rising and the water will probably change colour.

(http://t.oomuch.info/src/1250683927596.jpg)
4) Let it rest for a while and let those tabs do their magic. After about 20 minutes the foam started to disappear and the keycaps should be good to remove.

5) Time to get the keycaps dry again. This is up to you. I usually use a pasta sieve and give them a last clean with cold water. After that I use a hair-dryer to dry them.
 
So far I am very happy with the results and it even cleaned some keycaps which seemed really filthy with worn in grime.

Example:
(http://t.oomuch.info/src/1250684291104.jpg)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Wed, 19 August 2009, 07:41:41
That's some great idea there. :thumb:

An academic research paper on this would certainly be entitled "A novel method for cleaning keyboard keycaps". :D

It seems like these denture cleaning tabs are quite useful for cleaning all kinds of things, as a quick search showed. And apparently it's not exactly a new discovery (http://www.ciao.de/Kukident_Aktiv_Plus__Test_2784589) either. Interesting chemistry cocktail... some acids here, some peroxide there, and a major ingredient sems to be sodium bicarbonate. That should make for some nice chemical reactions.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: timw4mail on Wed, 19 August 2009, 07:48:26
My only concern with such a method is if a denture cleaning tab is abrasive.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Wed, 19 August 2009, 08:08:42
Quote from: timw4mail;110546
My only concern with such a method is if a denture cleaning tab is abrasive.

They are gently abrasive (due to the effervescence, not the tab itself, per se), but nothing that would damage a key.  It's probably a lot less damaging than putting them in the dishwasher.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Wed, 19 August 2009, 08:19:26
Quote from: itlnstln;110549
It's probably a lot less damaging than putting them in the dishwasher.

Or cleaning them by hand.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: o2dazone on Wed, 19 August 2009, 08:56:01
Yeah, cleaning them by hand would require rubbing, and we all know that can really hurt the natural texture of a keycap (especially if you're rubbing your Wang)

Can't wait to try this out, probably the best method I've seen so far ^^ (dishwashers scare me)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: rdjack21 on Wed, 19 August 2009, 09:03:19
I agree with o2dazone I can't wait to try that out. I have some keys that need to be cleaned but have been too lazy to hand wash them lately. So I will head down to the local drug store and get some denture cleaning tabs myself and try this out.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: BucklingSpring on Wed, 19 August 2009, 09:23:28
I always use the dishwasher for cleaning my keycaps.

Works extreemly well.

I place the keycaps in a cleaning bag to prevent them from wondering around.

(http://geekhack.org/attachment.php?attachmentid=3878&stc=1&d=1250691583)

They come out squeaky clean and never damaged any.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: o2dazone on Wed, 19 August 2009, 09:54:31
I could see the dishwasher being an alternative if you're getting "Hacker style" keyboards from ScarryGarcia. For the daily board chow and finger muck, I could see myself turning to less abrasive cleaning methods
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: BucklingSpring on Wed, 19 August 2009, 10:36:53
Quote from: ripster;110582
I blame the Germans.


It's a good rule of thumb. :-)

My dishwasher is a noname piece of sh*t and the light wash is not very hot. I can appreciate how a good Bosch can be damaging just by doing well at what it has been designed for.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: watduzhkstand4 on Wed, 19 August 2009, 10:50:04
bling bling!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: cmr on Wed, 19 August 2009, 14:40:13
lol the sparkle
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Rajagra on Wed, 19 August 2009, 14:46:06
While you're soaking the caps, don't forget to floss between the switches.:brushteeth:
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Fri, 28 August 2009, 04:50:00
I finished cleaning all three of the really nasty eBay Cherry boards today.

I figured I would share some more results of the denture tabs:

(http://t.oomuch.info/src/1251452830535.jpg)
(http://t.oomuch.info/src/1251452867780.jpg)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Fri, 28 August 2009, 06:40:08
That turned out pretty well I'd say. Any remaining traces of dirt? How long did it take per board?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Fri, 28 August 2009, 07:30:42
There were no traces of dirt left after I took them out of the denture cleaning liquid and gave them another cold shower in a pasta sieve. However, one key had something written on it with a finemarker - "123" on a "7" key for some reason. This remained in place. I could easily rub it off with alcohol though.. odd.

If you want to speed things up you can probably finish an entire board in an hour. I usually let them soak for at least an hour though.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: huha on Fri, 28 August 2009, 11:40:32
Any mechanical interaction required? Cleaning keys with a sponge is a really cumbersome and time-consuming task. 2.40 for several keyboards sounds like a good deal, I might want to try this.

-huha
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Fri, 28 August 2009, 12:24:29
Quote from: huha;112641
Any mechanical interaction required? Cleaning keys with a sponge is a really cumbersome and time-consuming task. 2.40 for several keyboards sounds like a good deal, I might want to try this.

-huha


Nope, no scrubbing or rubbing of the caps. Just make sure to put the tabs into the bowl before adding the keycaps and then let them in there for a while. If you still find them dirty (very unlikely - has not happened yet), just repeat the same thing again. Usually 4-5 tabs seem to be enough for a full set of keys.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: banyanleaf on Fri, 28 August 2009, 13:11:00
Here is my cleaning method and it has always given me the best (and not much work) result: 1) Take the caps down and soak in warm water overnight; 2) Use ultrasonic cleaner, use a few drops of dishwasher liquid and a cap of ammonia; clean for 2-4 minutes.

Air dry and bingo!

One comment on dishwasher method: careful with temperature. My dishwasher's default setting has pretty high water temperature and it might not be good for some caps.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: o2dazone on Sun, 06 September 2009, 20:32:10
sorry to bump this, but I just used this method on my hhkb keys. The white ones were starting to show gunk a little more than the black keys were. I left them in for about two hours, used a pasta sieve to strain the water, ran some cold tap water over them, and then let them sit out in the shade outdoors (no wind, hot vegas air). 10 minutes later they were ready for assembly :) Perfect technique, sixty
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: microsoft windows on Mon, 07 September 2009, 06:27:30
I ought to get myself some denture cleaner. My keyboards are filthy!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: rdh on Mon, 07 September 2009, 10:53:08
I haven't tried the denture cleaner, but Simple Green worked well for the moderately dirty keys on my SGI board.  

A number of people have mentioned using it, but I haven't seen details, so:
I put the keys in a bowl, dumped 1 part Simple Green, 8 parts hot tap water, and stirred it a little just to mix in the cleaner.
After letting it soak for 10 minutes, I poured out the fluid, rinsed the keys, and spread them out to dry.

The instructions on the bottle say you can dilute at 1:10, but the 1:8 ratio was convenient, since our kitchen stuff is mostly not in sane (metric) sizes: I used a one-quart glass bowl, 16 fl. oz. water (half a quart), and 2 fl. oz. cleaner.
The 10 minute period was chosen more or less arbitrarily.

It worked nicely, all the scunge was gone without any scrubbing.
Next up, a bigger challenge: my roommate's old (and never-cleaned) Northgate.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Hak Foo on Thu, 10 September 2009, 01:26:05
I throw the caps in a bag with a wad of Oxi Clean, fill with water, shake.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Thu, 10 September 2009, 09:45:49
I tried using Oxi Clean in my steam cleaner.  It didn't work as well as I had hoped.  Just thought I would share.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Mon, 02 November 2009, 13:51:14
Quote from: kishy;129954
4 Life brand... condoms

Exactly.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Mon, 02 November 2009, 15:42:16
Looks good.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: MFGorilla on Mon, 02 November 2009, 15:43:22
I wish I had found this thread before I rehabbed the old Model M I found at work.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Mon, 02 November 2009, 15:57:48
Quote from: kishy;129965
this looks like an easy way to do them in bulk.

This does look a lot easier than the method I would use of soaking everything in a bucket of Simple Green.  With that method, you would still have to do some scrubbing to clean the parts.  I appears with this that you just soak it for awhile, and the effervescence and abrasives in the tablets do the heavy lifting.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Mon, 02 November 2009, 16:24:03
I'm kinda interested in seeing if either of my Ms have broken rivets.  I doubt it, but you never know.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Mon, 02 November 2009, 17:34:12
Quote from: ripster;129980
I may try cleaning the doubleshots I bought from Kishy with a combined solution of:

1 part Simple Green
1 Denture Tablet
1 TB Oxyclean


I sent your doubleshot keys today too, you should get them within ~10 days I suppose, however they are already clean anyway.

PS: This method is also already very popular in the translated Korean version (http://www.kbdmania.net/xe/975293) and got featured on their front page recently.

Glad everyone likes the method.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ocdonkb on Mon, 02 November 2009, 22:27:01
This thread is very inspiring. Just ebay'd a $18 Dell AT101W, I'll try this cleaning method when it gets here.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Rajagra on Tue, 03 November 2009, 07:05:12
Quote from: ripster;129987
But on that other site that must not be mentioned I think they've one upped us all.


I hope they used that carefully. I've heard stories of people putting their hands in ultrasonic cleaners like that and having their finger joints damaged. No point having clean keycaps if you can't type any more.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Tue, 03 November 2009, 07:34:19
Quote from: kishy;129961
The numpad "+" still has a mark on it because that's actually been written on with a marker. It looks like it smudged though, so prolonged exposure may loosen it up even more.

Try some alcohol on that, think that worked for sixty...
Quote from: ocdonkb;130023
This thread is very inspiring. Just ebay'd a $18 Dell AT101W, I'll try this cleaning method when it gets here.

Well, as long as you have a good method of removing the keycaps (which is known to be a sort of a pain and even potentially dangerous to the switches)...
Quote from: Rajagra;130069
I hope they used that carefully. I've heard stories of people putting their hands in ultrasonic cleaners like that and having their finger joints damaged. No point having clean keycaps if you can't type any more.

Then again, I don't think you're supposed to put your hands inside an ultrasonic cleaner while it's operating.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ironcoder on Tue, 03 November 2009, 09:18:18
Quote from: o2dazone;110561
(dishwashers scare me)


Remind me not to eat at your house, bud :madgrin:
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ocdonkb on Tue, 03 November 2009, 14:13:24
Quote from: keyb_gr;130073
Well, as long as you have a good method of removing the keycaps (which is known to be a sort of a pain and even potentially dangerous to the switches)


wow thanks for the heads-up! Just read up on this topic on the alps switch wiki. Looks like a keypuller would really help, and elitekeyboards, or Hooleon sell these for cheap.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: o2dazone on Tue, 03 November 2009, 21:02:55
Quote from: ironcoder;130101
Remind me not to eat at your house, bud :madgrin:


Hey I do a badass job handwashing, alright 8)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ironcoder on Wed, 04 November 2009, 07:42:59
Fair enough!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ocdonkb on Fri, 13 November 2009, 15:49:05
so I finally got my Dell AT101W today, already took it apart. The keycaps I'll just clean using the denture tablets. But what about the board?

(http://geekhack.org/attachment.php?attachmentid=5679&stc=1&d=1258148800)

Can I just put this under the kitchen faucet and clean it with a brush? My concern is mainly the electronics, will they survive the water?

Please advice what I should do.

I'm not planning on actually taking apart the individual switches.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Fri, 13 November 2009, 15:52:43
I would dust it with a feather duster, use a Lysol wipe or spray some Windex on a paper towel and wipe it off.  I wouldn't put the body under water by any means.  You could wash the case under water or in the dishwasher, though.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Fri, 13 November 2009, 16:00:16
I usually use a combination of air compressor + toothbrush on actual boards/switches. Be careful to not rub the switches too hard though, especially ALPS like to fall of easy because they only have 2 solder points.

Regarding the guide: I had the first failure with the method the other day, I guess these keycaps are beyond hope. Gave them 3 cleanings and one with another cleaner. They are still damn dirty.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Fri, 13 November 2009, 16:04:54
Did you use the toothbrush at all on the keycaps you soaked in the denture cleaner?  When I had braces as a kid, I used denture cleaner on my retainer after the braces came out.  I was instructed to still brush my retainer as the denture cleaner would not necessarily be able to take out the "big chunks."  Just a thought.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ocdonkb on Fri, 13 November 2009, 16:04:56
Quote from: itlnstln;132246
I would dust it with a feather duster, use a Lysol wipe or spray some Windex on a paper towel and wipe it off.  I wouldn't put the body under water by any means.  You could wash the case under water or in the dishwasher, though.


Ok, thanks.

The switches are mounted on this metal plate. And looks like there's not an easy way to detach the circuit board, so that I can have the switches+mounting plate by themselves.

If this was possible, then I assume it's okay to put the switches+mounting plate under the faucet, no? Since there are no electronic parts here.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Fri, 13 November 2009, 16:07:26
Other than desoldering the switches, you can't take them off the PCB.  Even then, you wouldn't want to put them in water, because there is metal inside the switch, and you probably wouldn't be able to let them dry out properly.  If that were the case, the switch could malfunction and/or some of the internals would rust.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Sat, 14 November 2009, 05:32:21
Quote from: sixty;132250
Regarding the guide: I had the first failure with the method the other day, I guess these keycaps are beyond hope. Gave them 3 cleanings and one with another cleaner. They are still damn dirty.

What kind of board / plastic? With some of the softer "standard" materials (ABS/PS?) the dirt seems to "dig into" the surface at times and can be almost impossible to remove completely.

At least if the dirt doesn't come off with fairly intensive cleaning, chances are it won't in actual use.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Sat, 14 November 2009, 08:23:57
Quote from: keyb_gr;132344
What kind of board / plastic? With some of the softer "standard" materials (ABS/PS?) the dirt seems to "dig into" the surface at times and can be almost impossible to remove completely.

At least if the dirt doesn't come off with fairly intensive cleaning, chances are it won't in actual use.


It was a newer lasered Cherry G81-8300 or something, the caps look as if the board has been stored in a pond of mud, face down. They are the new thinner type of Cherry keycaps and should be PBT. I believe these are actually made in China.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: British on Sat, 07 August 2010, 11:57:00
Quote from: sixty;110538
I used the "Kukident Active Plus" brand - which should be easily available in Europe. They came in at 2,40 Euros for 33 Tabs.

Found those on Amazon.de, but they don't seem to ship anywhere outside Germany...
Any idea where else to find those ?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Mental Hobbit on Sat, 07 August 2010, 12:38:54
Kukident is just a German brand of Reckitt Benckiser. Whatever is common in France will most likely work just as well.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: British on Sat, 07 August 2010, 12:57:18
Sure, but being a bit lazy, I prefer to know working products rather that having to test them :wink:
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: WhiteRice on Sat, 07 August 2010, 15:13:41
Quote from: bucklingspring;110571
i always use the dishwasher for cleaning my keycaps.

Works extreemly well.

I place the keycaps in a cleaning bag to prevent them from wondering around.

Show Image
(http://geekhack.org/attachment.php?attachmentid=3878&stc=1&d=1250691583)


they come out squeaky clean and never damaged any.


you type on bras!?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Sun, 22 August 2010, 18:57:56
This seemed like about the right place to mention this linky (http://classic-computers.org.nz/blog/2008-12-30-de-yellowing-old-cases.htm) about de-yellowing old cases.  Shown is a Commodore Vic 20 (basically just a keyboard without much computer in it anyways), though it could be applied to any yellowed old plastic tech.
 
I've used this formula myself just for the hell of it (cleaned up some "vintage" Nintendo consoles prior to selling on eBay) and it worked perfectly.  No damage to the plastics and they ended up looking much better than the photos in the link.
 
Perhaps a good compliment or alternative to the denture stuff.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: WhiteRice on Sun, 22 August 2010, 19:47:37
Wow, good stuff!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ThirdLap on Sun, 22 August 2010, 20:49:57
If you can't find high concentration Hydrogen Peroxide, Clairol Professional Creme 40 (http://www.amazon.com/Clairol-Professional-Premium-Dedicated-Developer/dp/B003YJQN14) [strike](I believe the 40 indicates the concentration of hydrogen peroxide)[/strike] is widely available at Sally Beauty Supply stores, as well as other 'open to the public' beauty stores.  It is fairly viscous, and can be easily painted onto objects in need of de-yellowing.  Works very well.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ThirdLap on Sun, 22 August 2010, 21:32:03
Quote from: ripster;215807
Sally 40 is actually 10-15% concentration.  It's a weight vs volume thing IIRC.  [/IMG]
Guess you're right. (https://docs.google.com/viewer?url=http://www.pgproductsafety.com/productsafety/msds/beauty_care/Hair_Color/Clairol_Professional_Premium_Creme_40_Vol_Developer_(95595020).pdf) The MSDS actually says 7-13%.  The MSDS is the same for all four levels of Creme, and it would seem the 40 has the highest concentration.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ThirdLap on Sun, 22 August 2010, 21:38:09
Looking over the MSDS sheets, it appears that the concentration of hydrogen peroxide is the same for Clairoxide as it is for Creme 40 (12%).  So either would be fine for the Retr0bright process.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Sun, 22 August 2010, 21:46:20
Hmmm, yeah.  There are plenty of variations.  Different concentrations (within limits) of active bleaching agents probably aren't particularly important for this application; you can always do it twice or do it longer or hotter or try out different kinky positions or whatever if you want bleachyer(?) results.
 
I'll have to confess that I didn't actually use the exact formula given in my linky, but it had a decent explanation and some photos.
 
This denture stuff is a good find though.  Only problem is that I'd be embarassed buying it.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Tue, 24 August 2010, 08:07:42
Quote from: Konrad;215816
This denture stuff is a good find though.  Only problem is that I'd be embarassed buying it.

Apparently denture cleaning tabs actually are a proven household cleaning aid, so it shouldn't be all that embarrassing. One pack should also last a pretty long time.

(That reminded me of a hilarious German TV ad for condoms from the '90s though. Hey, actually found it. (http://www.youtube.com/watch?v=XEe2t3nRB9U) Makes denture cleaning tabs look harmless, doesn't it? :D)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Tue, 24 August 2010, 08:11:47
I used to buy them all the time when I used a retainer.  It's no big deal, grow a pair.  Trust me, people really don't give a ****.  Buying the morning after pill is about the only thing remotely embarrassing, but then, you probably have other things to worry about.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Mental Hobbit on Tue, 24 August 2010, 09:22:52
Has anybody tried dishwasher tablets yet? I use them for all kinds of stuff that's otherwise a pain to clean.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: phototristan on Tue, 24 August 2010, 09:55:53
If you really want to raise an eyebrow, try buying some denture cleaning tabs along with some condoms.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: itlnstln on Tue, 24 August 2010, 10:10:17
Quote from: phototristan;216042
If you really want to raise an eyebrow, try buying some denture cleaning tabs along with some condoms.


That sounds kinky.  I wonder what it's like without the dentures in.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Soarer on Fri, 31 December 2010, 16:01:34
Thread resurrection... to show this resurrection...

Before:



After:



Edit... another after pic, taken in daylight:



Just soaked with half a dozen Steradent Extra Strength for a while then rinsed.

Magic!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Fri, 31 December 2010, 16:42:24
Wow, ****.  That's a huge difference.  Just soaking?  No scrubby with a toothbrush?
 
I can't tell from the pics, but are the (clean) key plastics slightly age-yellowed?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: NewbieOneKenobi on Fri, 31 December 2010, 16:46:27
I use toothbrush and paste.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Soarer on Fri, 31 December 2010, 17:02:55
No scrubbing, no rubbing, no hard work at all... and that wasn't loose dirt! I tried cleaning one key with a cloth soaked in Muc-Off - it took ages and still wasn't really clean.

Not yellowed, before pic was in daylight and after was with flash. The key colour is about right in the first pic (where it shows through!).
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: woody on Fri, 31 December 2010, 17:55:03
Soaker is right - denture tab cleaning is MAGIC. It's the most simple and effective method I've seen so far. Recently I cleaned the keycaps of an Apple IIc using 6 tabs. The result was excellent, at the cost of simple soak, rinsing and drying. No more brushing keycaps one by one with toothbrush.

Sixty, I owe you, man. At least a hooker and booze.

And Happy New Year!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Fri, 31 December 2010, 20:36:44
I wonder if Mr. Clean® Magic Eraser® can be safely used on keycaps.  Or would the micro-abrasive and mysterious chemicals damage the surfacing/finish layer (and inks, in the cases of printed or subliminated labels)?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: theferenc on Fri, 31 December 2010, 21:16:01
I've been using these for years. The first thing I do with a new keyboard is to disassemble and toss in hot water with denture tablets.

It just works so amazingly well. Even removes corrosion and build up from the metal stabalizers.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: turbocharged on Fri, 31 December 2010, 22:03:17
I've done this to my Cherry MX-11900, NMB, IBM Model M, and my friend's Dell AT101W...works extremely well...highly recommended.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Soarer on Sat, 01 January 2011, 05:09:41
Quote from: woody;271351
Sixty, I owe you, man. At least a hooker and booze.


+1 :-)

I figured adding pics was a good way to show appreciation. I've used denture tabs on other boards before, but none so nasty as this one.

(Daylight 'after' pic added to previous post).
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: 7bit on Sat, 01 January 2011, 09:32:42
Quote from: Soarer;271535
+1 :-)

I figured adding pics was a good way to show appreciation. I've used denture tabs on other boards before, but none so nasty as this one.

(Daylight 'after' pic added to previous post).


Doesn't the keyboard stink like toothpaste now, or does that smell vanish?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Soarer on Sat, 01 January 2011, 09:52:13
No stink at all, the stuff smells a bit like the mouth rinse at the dentist, but it doesn't linger on the keys.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: woody on Sat, 01 January 2011, 17:04:50
Quote from: ripster;271592
Actually, I looked it up  (http://www.dentist.net/dentureFAQ.asp)and the chemical ingredients look pretty safe but I'd still be careful with vintage black keys.

Care to explain to us, non-alchemists?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Sat, 01 January 2011, 17:36:15
I should mention that I have slightly changed (improved?) my method. I now put keycaps into a zipper-bag normally used for marinating meat and stuff like that. Then I add the denture tabs and hot water. Let it soak in that bag with the zipper closed for about 30 mins.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: ynih on Sat, 01 January 2011, 19:47:59
Thanks sixty for the original idea and the updated method!

Actually, I'm thinking the Hot water might help dissolve things a little faster, but I'm afraid if I put scalding hot water, it's going to deform my keys :(
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: theferenc on Sat, 01 January 2011, 20:07:53
It takes a solid amount of heat to warp keys, and most household water heaters have safety shutoffs after 140 degrees F. It takes at least 170 to warp even wimpy keys.

Also, sealed plastic bag: not the best idea. Unless it is quite large, and you get as much air out of it as possible, and keep an eye on it during the soaking period. There's a large quantity of CO2 released during this process. More than enough to burst such a bag if you aren't careful.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Sat, 01 January 2011, 20:36:52
I don't see any advantage to using an enclosed container (bag) for this. As pointed out, the gas release might be explosively wet and messy.  You won't be able to control (or prevent) the reaction by capturing the escaping gas, unless maybe you have high pressure equipment.  Of course, I haven't done it myself, so who knows?
 
The chemical reaction doesn't require any extra heat to activate. Room temp (or whatever the package instructions say) would work well enough; added heat would probably only give quicker results, not better results. Longer reaction time would let the bleach penetrate more thoroughly than short concentrated reactions.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Sun, 02 January 2011, 11:15:28
I prefer the bag method because I can clean several kits separated at once. Of course, I guess you could also just put up several bowls...

Anyway, the gas reaction happens, but its not even close to blowing up a bag with 4 tabs in. In fact now I feel challenged and might try to see how many it takes until it blows up.

Mythbusters, go!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: theferenc on Sun, 02 January 2011, 12:21:05
It entirely depends on the size of the bag, the volume of water, and how much air you allowed in it before you sealed it.

Just to check, I was able to burst a quart size zip lock bag with only a single tablet, but there was nearly a quart of water in it.

I'm not saying it's a bad idea, but rather more of a "don't try this at home, kids" idea. If you know what you're doing, it's fine. If you don't, it might be fine, or might be a giant mess.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: jaynoon on Mon, 03 January 2011, 16:27:36
Quote from: Konrad;271401
I wonder if Mr. Clean® Magic Eraser® can be safely used on keycaps.  Or would the micro-abrasive and mysterious chemicals damage the surfacing/finish layer (and inks, in the cases of printed or subliminated labels)?

Key word is abrasive. Unless you like 'teh shiny' I wouldn't use one.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Mon, 03 January 2011, 16:36:12
What's wrong with teh shiny?  At least all the other keys will match the spacebar.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: HaaTa on Mon, 03 January 2011, 16:44:55
Did someone say "shiny keys"?

(http://lh4.ggpht.com/_6WOoTO_7VuQ/TL4rZTKs_UI/AAAAAAAACik/9BVRNIch-Bo/s800/2010-10-19%2019.13.16.jpg)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Moogle Stiltzkin on Mon, 03 January 2011, 22:44:19
Is this cleaning method ok for Topre key caps that are dye sublimated ?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: theferenc on Mon, 03 January 2011, 23:06:00
Dye sublimated topre keys? That's weird. But, I don't see why not. Aren't the IBM keys dye sublimated as well?

I've done a lot of those this way. Along with Dell AT101 keys, Sun rubber dome keys, some cherry double shots, etc. Never saw any problems with it.

And it's SO EASY.

If you're worried, just toss one that you don't care much about, such as Pause, and see what happens.

Science. It works, *****es!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Half-Saint on Tue, 11 January 2011, 16:02:15
My g/f just bought me a huge box of Kukident Aktiv Plus tabs. 136 tabs in the box!!!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: theferenc on Tue, 11 January 2011, 17:29:43
My bad, ripster. Given the look, and the black on dark, I always thought they were lasered.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: msiegel on Sat, 15 January 2011, 01:19:54
anyone tried this with model m or f spring/flyplate assemblies?

i just did a set of model f keys and barrels; they came out fresh and minty :)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Lanx on Sat, 15 January 2011, 01:32:28
Quote from: msiegel;278886
anyone tried this with model m or f spring/flyplate assemblies?

i just did a set of model f keys and barrels; they came out fresh and minty :)


i did model m keycaps, minty on my end too.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: George7 on Sat, 15 January 2011, 07:29:41
Fantastic idea!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: hoggy on Sun, 16 January 2011, 14:58:35
Tried this idea this weekend.  Worked a treat.

I'm going to give the oxi-action (http://www.vanish.co.uk/product.php?id=1) stuff a go soon.  

It does say to not use on finished surfaces, so I'm going to look for a messed up keyboard to test.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: bakageta on Fri, 21 January 2011, 22:58:07
Just did this to the blanks from my Filco, came out great.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Tony on Tue, 22 February 2011, 08:47:53
Up for anyone who needs this.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: niz on Sat, 19 March 2011, 15:38:36
Sorry to revive such an old thread but I was just curious. Has anyone tried using this cleaning method on black keycaps? I mean, you wouldn't notice quite the difference that doing this to white ones would yield, but just thought I'd try this out to remove any residue/oil that's built up. What do you guys think?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: sixty on Sat, 19 March 2011, 17:59:41
Pefectly fine with black and with all colors of the rainbow.

(http://i.imgur.com/WwOIR.jpg)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: bettablue on Sat, 19 March 2011, 22:50:04
Quote from: sixty;112493
I finished cleaning all three of the really nasty eBay Cherry boards today.

I figured I would share some more results of the denture tabs:

Show Image
(http://t.oomuch.info/src/1251452830535.jpg)

Show Image
(http://t.oomuch.info/src/1251452867780.jpg)


Look! they even replace missing keys too!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Alex on Mon, 11 April 2011, 04:28:20
The only brand i seem to be able to find here in Sweden is ProFast Super Rengöringstabletter
(http://www.ekulf.com/produkter/bilder/2250_b.jpg)

Anyone who tried it for cleaning keycaps? It seems to have the following contents:

Sodium Perborate, Sodium
Bicarbonate, Potassium Monopersulphate,
Trisodium Phosphate, PEG-240, Sulfamic
Acid, PVP, TAED, Silica, Sodium Methyl Oleoyl
Taurate, Cellulose-Lactose, Colour C.I. 42090,
Aroma.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Ascaii on Mon, 11 April 2011, 14:21:53
Try them on one of the spare stems I sent you before trying the caps. Honestly I think theyll be fine but you can never be too careful =D
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: keyb_gr on Mon, 11 April 2011, 14:34:57
TAED? Isn't that some stuff in some of the Retr0brite ingredients, too?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Findecanor on Mon, 11 April 2011, 15:10:33
Sodium Perborate makes hydrogen peroxide -- which is a form of bleach. TAED makes the hydrogen peroxide effective in temperatures below 40 °C.
Bicarbonate and acid makes the tab dissolve in water.

Hmm.. I hope that there are some denture cleaning tabs available in Sweden that do not contain any flavour. I don't want my keyboards to smell "minty fresh", sorry.

Because of some history I have been through I strongly associate the smell of mint with mucus and infection. For instance, I can't stand some Lebanese food that has mint in it, and I have a problem working with people who chew gum.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: The Solutor on Mon, 11 April 2011, 19:11:01
We should call this method the "ghetto Jacuzzi" :tongue:
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Findecanor on Fri, 29 April 2011, 14:56:19
Quote from: Alex;328415
The only brand i seem to be able to find here in Sweden is ProFast Super Rengöringstabletter
I found a pack of "Corega" "3 Minutes" tabs at Ica Kvantum (Swedish convenience store). 66 tabs for 55 SEK.
Worked nicely on my off-white Cherry PBT caps. I had only to rub off some pencil marks. If I compare closely, they appear to be slightly less yellow also. Same active ingredients as those "Pro Fast" tabs (Sodium Perborate and TAED), and I think also some abrasive powder.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: slueth on Thu, 05 May 2011, 00:23:24
Soaking my Model F keys now, toothbrush has failed me.  We shall see the the results, unfortunately I didn't get before shots.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: NeeGo on Thu, 05 May 2011, 01:02:05
This method works great; it left few blue stains at the edges of the key caps but I was able to easily wipe them away with my finger. Thanks sixty!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: slueth on Thu, 05 May 2011, 01:58:19
Wow came out beautifully :) Yay! No more nasty feeling keys.  Killed 99.9%(eh) of the germs and smells minty ^_^
Not the best pic but as you can see they are clean!
(http://dl.dropbox.com/u/20171355/IMG_20110504_234754.jpg)
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Zet on Thu, 19 May 2011, 11:14:32
this looks like something I will totally do when my keycaps key dirtey!
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Slarg on Thu, 19 May 2011, 14:10:43
I fear it would wear off the lettering on my M13. Anyone tried it ? Otherwise great !
My previous method was hot water and a tad of laundry washing powder, soak and rub with fingers.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Findecanor on Sat, 13 August 2011, 17:24:16
Has anybody tried using denture cleaning tabs for cleaning a vintage Cherry corp. key with a transparent window for a LED?

I am afraid that something in the tabs could hurt the clear plastic, scratching it or making it cloudy, and would like to hear from someone else before I try it.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: .di on Sat, 13 August 2011, 18:17:47
hi guys.. is it safe to clean keycaps with pad printing with this method..?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Arcanius on Sat, 13 August 2011, 18:19:35
It should be. Most pad printed keys have a coating as to not rub off. Some don't, but on those, you can scratch the letters off with your fingernail.
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Findecanor on Sat, 10 September 2011, 15:22:09
Denture cleaning tabs works well for dirty Cherry MY switches, apparently. (not MX, MY!) However, the stabilizer bars turned black.

I am still wondering about windowed Cherry keys. (Cherry corp. original vintage double-shots). Will I be the first to try it?
Title: Cleaning keycaps with... denture cleaning tabs!
Post by: Konrad on Sat, 10 September 2011, 19:04:55
It seems counterintuitive, but clear plastics can often be made clearer with careful use of extremely fine abrasives. Like 2000-grit sorta stuff ... it's how they polish up the plastics on car headlights. Ridiculously fine abrasives are used to polish lenses and gemstones, even when they're made from plastics. ;)

Toothpaste at the high end of the RDA scale is an excellent abrasive.  You can even use it to "sand out" scratches on audio CDs (not always effective on data CDs or DVDs).  But don't blame me if you haze up the surface, lol.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: HotKillerZzz on Sun, 20 July 2014, 03:14:54
How many should i use?
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: SSIPAK on Sun, 20 July 2014, 03:19:50
How many should i use?
2 or 3 should be fine
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: HotKillerZzz on Sun, 20 July 2014, 04:13:32
How many should i use?
2 or 3 should be fine
That is for approximately how many caps? Im gonna do a spring clean for everything
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: rowdy on Sun, 20 July 2014, 04:49:58
How many should i use?
2 or 3 should be fine
That is for approximately how many caps? Im gonna do a spring clean for everything

I use 3 for a full (~108) keycap set.  Warm water.  Dissolve the tablets, the water turns blue.  Add keycaps and swish around slightly.  Leave to stand until the water i no longer blue (it should turn clear or brown, depending on how dirty the keycaps are).  I swich around a little again.  Then drain the water and spread the keycaps out to dry on an absorbent surface, such as newspaper.  I personally prefer to drain the used denture tab mixture after cleaning, refill with clean cold water and swish around a bit again, just to be sure.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: SpecTP on Mon, 21 July 2014, 00:36:57
I use Dawn dishwashing liquid to clean my IBM keycaps.. works great.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: dorkvader on Mon, 21 July 2014, 07:50:27
I use Dawn dishwashing liquid to clean my IBM keycaps.. works great.

i'm not sure if it was Dawn, but I've had issues with dish soap leaving a residue.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: SpecTP on Mon, 21 July 2014, 09:35:54
I use Dawn dishwashing liquid to clean my IBM keycaps.. works great.

i'm not sure if it was Dawn, but I've had issues with dish soap leaving a residue.

Not with Dawn.  There's no residue.  I use it to wash my car when I want to remove ALL the polish and wax.  You have to take care and restore a new set of polish and wax afterwards.  It works great on all the crud buildup on my keys.  I let it soak in the sink overnight and the keys are spotless the next day.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: davkol on Fri, 25 July 2014, 14:24:57
A disappointment so far. I've run through three rounds and either my keycaps are too dirty, or I'm doing something wrong.

Round zero. One half of a dirty Alps doubleshot set, hot water and some cheap denture-cleaning powder (Alpa, €1.5 for 150 g). Expected it to be only slower (over night). After 8 hours, I had to remove dirt by hand. Okay, check ingredients first next time.

Round one. The other half of that doubleshot set, hot water and two blend-a-dent tabs (€6.5 for 60 tabs). Water went blue and foamy for about 30 minutes, as described in the OP. Still had to remove dirt residue manually. Maybe too much water or too few tabs.

Round two. A full PBT dyesub set, just barely enough warm water and six blend-a-dent tabs. Reaction as expected. After 30 minutes, I still had to remove dirt residue by hand.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: rowdy on Sat, 26 July 2014, 03:19:27
It might depend on how much dirt was on the keycaps.  Mine were not that dirty, but sufficiently dirty that the water turned brown afterwards.

Some pictures of mine here (http://geekhack.org/index.php?topic=45962.msg965176#msg965176).  Doesn't look like I took or kept the pictures of the brown water.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: SSIPAK on Sat, 26 July 2014, 03:28:10
A disappointment so far. I've run through three rounds and either my keycaps are too dirty, or I'm doing something wrong.

Round zero. One half of a dirty Alps doubleshot set, hot water and some cheap denture-cleaning powder (Alpa, €1.5 for 150 g). Expected it to be only slower (over night). After 8 hours, I had to remove dirt by hand. Okay, check ingredients first next time.

Round one. The other half of that doubleshot set, hot water and two blend-a-dent tabs (€6.5 for 60 tabs). Water went blue and foamy for about 30 minutes, as described in the OP. Still had to remove dirt residue manually. Maybe too much water or too few tabs.

Round two. A full PBT dyesub set, just barely enough warm water and six blend-a-dent tabs. Reaction as expected. After 30 minutes, I still had to remove dirt residue by hand.
if its too dirty you might want to use a toothbrush with dish washing soap and scrub them gently before you soak them with denture tab water.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: davkol on Mon, 28 July 2014, 05:18:25
Thanks for the link, rowdy. I've tried another round, this time with great results. I think it's helped that I've used a relatively small pot and only barely 1 liter of hot water, although there were only four tabs.

if its too dirty you might want to use a toothbrush with dish washing soap and scrub them gently before you soak them with denture tab water.
Nah, that defeats the whole point of using denture tabs.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: ShawnMeg on Tue, 29 July 2014, 00:18:46
Dishwashing soap or handsoap has worked well for me.  Maybe I'll try to denture cleaning tabs one day.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: TopreFan333 on Mon, 28 December 2015, 22:58:22
This denture tab thing just saved me so much work. My HHKB caps were getting a little dingey after maybe 9 months of use, and now they look totally new -- and I didn't scrub a thing.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: rowdy on Mon, 28 December 2015, 23:21:43
This denture tab thing just saved me so much work. My HHKB caps were getting a little dingey after maybe 9 months of use, and now they look totally new -- and I didn't scrub a thing.

And they smell minty fresh :D
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: E3E on Mon, 28 December 2015, 23:29:14
Definitely going to do this before I dye my IBM 5140 caps. I've cleaned them already, but having since typed on them, I think another cleaning would be a good idea before dunking them in the dye. :P
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: heedpantsnow on Tue, 29 December 2015, 07:39:39
Also put them in a mesh bag (like what fruit or potatoes come in) and throw them in the top rack of your dishwasher. Almost zero work and gets them very very clean.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: fohat.digs on Tue, 29 December 2015, 07:45:44
but having since typed on them, I think another cleaning would be a good idea before dunking them in the dye.

They must be absolutely clean before going into the dye bath. Even traces of skin oil will ruin your job.
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: E3E on Tue, 29 December 2015, 15:17:37
but having since typed on them, I think another cleaning would be a good idea before dunking them in the dye.

They must be absolutely clean before going into the dye bath. Even traces of skin oil will ruin your job.


Yeah, I've botched paintjobs thanks to poor surface prep and rushing. Thanks for the heads up though.

Also put them in a mesh bag (like what fruit or potatoes come in) and throw them in the top rack of your dishwasher. Almost zero work and gets them very very clean.

This sounds like a fantastic tip, man. I'll do that!
Title: Re: Cleaning keycaps with... denture cleaning tabs!
Post by: jcoffin1981 on Wed, 30 December 2015, 22:44:33
I have purchased a dust cover for my keyboards which I use when not in use.  I also clean the case and keycaps 1-2 times weekly with a very mild glass cleaner (without amonia).  It's easier to prevent the board from becoming dirty than to clean it after the fact.  Eating at the keyboard is a no-no, but this is something that even I do.