Author Topic: Help with repair of Model F foot  (Read 1436 times)

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Offline ShawnMeg

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Help with repair of Model F foot
« on: Tue, 12 August 2014, 21:09:59 »
I was hoping some of the experts here on the forum can give me some suggestions on the best way to fix this.  I'm not much of a repair person.  The plastic foot is broken.

Thanks.

« Last Edit: Sun, 21 December 2014, 19:27:17 by ShawnMeg »


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Offline E TwentyNine

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Re: Help with repair of Model F foot
« Reply #1 on: Tue, 12 August 2014, 21:24:50 »
Before you do anything you're going to need to pull the back off and remove the foot from the case.  It comes out easy.

I think a good two-part liquid epoxy - gorilla has some that come in a dual syringe, don't get the fast-setting stuff - would do the trick nicely.

I have no direct experience doing that with this particular part but have used it on M cases (which are not the same type of material) with success.

Also think I saw someone selling these or the maybe AT foot on shapeways.
Daily driver: SSK or Tenkeyless IBM AT
1984 Model M Industrial Prototype ⌨ 1992 Black Oval Industrial SSK ⌨ 1982 5251 Beam Spring ⌨ 89 Key "SSK" ⌨ M13 triplets

Offline Muh Fugen

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Re: Help with repair of Model F foot
« Reply #2 on: Wed, 13 August 2014, 18:29:43 »
If you can find someone who has the appropriate tools, ultrasonic welding would probably be your best bet.

Offline ShawnMeg

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Re: Help with repair of Model F foot
« Reply #3 on: Wed, 13 August 2014, 19:17:25 »
Thanks.  I saw the webpage with the 3D printing of the foot.  I'll see if there is anyone closeby who can do ultrasonic welding.


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Offline fohat.digs

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Re: Help with repair of Model F foot
« Reply #4 on: Wed, 13 August 2014, 19:19:41 »
I would try a good quality epoxy first. It can be very strong.

Funny to see that break. Usually it is the "ears" that break off.
"Starting in 2011, the deficits again started to shrink. During Obama’s term  the deficit was reduced by $900 Billion  before finally in 2015 the GOP managed to wrangle a “reconciliation” bill out of Obama where he again cut corporate taxes, as well as made permanent some of George W. Bush’s original tax cuts. This is the year everything reversed. Before this, under Clinton, Bush and Obama the deficit in almost every year was gradually decreasing. The balance we had of taxes and the economy was bringing the deficit down, the money coming in was slowly catching up with the money going out until 2015. Trump’s subsequent tax cut has continued the new trend even after the rest of Bush’s cuts have since expired. Obama had an average GDP of 2.3%, with 11.6 million jobs created and unemployment peaking at 10% in 2009, then falling to 4.3% in 2016. If we had continued on that downward deficit track, we would have again reached balance and another surplus in 2017-2018.
– Frank V Walton 2025-07-01

Offline Parak

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Re: Help with repair of Model F foot
« Reply #5 on: Wed, 13 August 2014, 19:44:09 »
A recent delivery of a 'few' Model Fs resulted in 5 with broken handles on the feet, and only three of them were recovered. So, I'm in a similar boat. Sigh.

Offline fohat.digs

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Re: Help with repair of Model F foot
« Reply #6 on: Wed, 13 August 2014, 20:00:05 »
broken handles on the feet, and only three of them were recovered.

I successfully filed the broken stubs flat and sanded the circles to a pretty nice finish.

That gave me a pair of "tab-less" feet (they still work fine if you simply push them with your finger) and it can't happen again!
"Starting in 2011, the deficits again started to shrink. During Obama’s term  the deficit was reduced by $900 Billion  before finally in 2015 the GOP managed to wrangle a “reconciliation” bill out of Obama where he again cut corporate taxes, as well as made permanent some of George W. Bush’s original tax cuts. This is the year everything reversed. Before this, under Clinton, Bush and Obama the deficit in almost every year was gradually decreasing. The balance we had of taxes and the economy was bringing the deficit down, the money coming in was slowly catching up with the money going out until 2015. Trump’s subsequent tax cut has continued the new trend even after the rest of Bush’s cuts have since expired. Obama had an average GDP of 2.3%, with 11.6 million jobs created and unemployment peaking at 10% in 2009, then falling to 4.3% in 2016. If we had continued on that downward deficit track, we would have again reached balance and another surplus in 2017-2018.
– Frank V Walton 2025-07-01

Offline Parak

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Re: Help with repair of Model F foot
« Reply #7 on: Wed, 13 August 2014, 20:51:38 »
broken handles on the feet, and only three of them were recovered.

I successfully filed the broken stubs flat and sanded the circles to a pretty nice finish.

That gave me a pair of "tab-less" feet (they still work fine if you simply push them with your finger) and it can't happen again!


Most excellent idea sir - I'll do that, thanks :D

Offline E TwentyNine

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Re: Help with repair of Model F foot
« Reply #8 on: Wed, 13 August 2014, 21:26:31 »
I successfully filed the broken stubs flat and sanded the circles to a pretty nice finish.

That gave me a pair of "tab-less" feet (they still work fine if you simply push them with your finger) and it can't happen again!

I think this would be a better look than stock, the tabs seem useless. 
Daily driver: SSK or Tenkeyless IBM AT
1984 Model M Industrial Prototype ⌨ 1992 Black Oval Industrial SSK ⌨ 1982 5251 Beam Spring ⌨ 89 Key "SSK" ⌨ M13 triplets