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geekhack Community => Off Topic => Topic started by: Malphas on Wed, 19 February 2014, 17:12:01

Title: How do you polish a car?
Post by: Malphas on Wed, 19 February 2014, 17:12:01
By which I mean, like really really polish a car. That showroom type finish where all the surfaces are like mirrors. What are the processes and products involved?  I would normally just pay someone to do it, but this is a twenty year old car with a couple of rust spots (but otherwise in mostly reasonable shape), with sentimental/collector value, and I'm kind of precious about it and don't trust a valet service not to chip paint into the rust.
Title: Re: How do you polish a car?
Post by: tjcaustin on Wed, 19 February 2014, 17:34:52
Clay bar - it will pull particulates out of the clear coat and paint itself.  You'll do the first wash and while the car is still wet, use the provided "lube" and rub the clay bar lightly over the car's surface, folding the bar regularly to get a fresh surface on the clay and to not leave little scratches in the paint/clear.

Compound - It's a more abrasive type of polish that will remove more contaminants.  You'll apply it with a sponge by hand with a light touch as if you aren't careful, you can actually damage the surface.  You'll know it's time to remove it when it's slightly reflective.

Polish - See compound but with a less abrasive fluid.

Wax - Apply in a similar fashion to the compound/polish, but instead of it becoming reflective when it's time to clean, it will go cloudy.  You'll know you did right when it feels glassy smooth.

This is all doable by hand, which is what I would recommend if you've never done this before. 
Title: Re: How do you polish a car?
Post by: kmiller8 on Wed, 19 February 2014, 18:51:09
(http://i.imgur.com/oIKUEAz.jpg)
Title: Re: How do you polish a car?
Post by: katushkin on Wed, 19 February 2014, 20:17:54
www.reddit.com/r/autodetailing

you don't need an account, just look at the wiki or previous posts, and see the gurus at work too!
Title: Re: How do you polish a car?
Post by: nubbinator on Wed, 19 February 2014, 20:34:52
Show Image
(http://i.imgur.com/oIKUEAz.jpg)


Yup, that there car has been Polished and Polished good.
Title: Re: How do you polish a car?
Post by: tinlong117 on Thu, 20 February 2014, 00:05:30
Show Image
(http://i.imgur.com/oIKUEAz.jpg)

Yes. Put on a PL plate.
Title: Re: How do you polish a car?
Post by: eth0s on Thu, 20 February 2014, 02:20:16
By which I mean, like really really polish a car. That showroom type finish where all the surfaces are like mirrors. What are the processes and products involved?  I would normally just pay someone to do it, but this is a twenty year old car with a couple of rust spots (but otherwise in mostly reasonable shape), with sentimental/collector value, and I'm kind of precious about it and don't trust a valet service not to chip paint into the rust.

Well, these smarty pants are not going to be any help.

To get the kind of shine you are looking for you need to repaint the car.   And the type of repainting that will give you what you want will cost you about $1,000 (USD), or more, actually you can spend $5,000, if you want to.  That will give you a beautiful multi-layer paint job, like you see in magazines and car shows, where they first sand the car down to bare metal, then bondo the rusted out parts, then spray the entire car with primer, let it dry, then spray with paint.  Then clear coat, then dry, then paint, then dry, then clear coat, then dry, then paint, then dry, then clear coat, then dry, you get the idea.  They will keep going, as long as you are paying.  The more coats, the "deeper" the shine.  If you've ever heard of a 12" shine, that's where you hold a ruler up the car, and see how much of the ruler you can read in the reflection.  If you can see all 12" reflected, that's a sweet t!ts paint job.  Even 6" is still a mildly sugary t!ts paint job.  3" is more like sour t!ts.  And 1" is like saggy, sour, wrinkledy old teats.

And if you don't want to pay to have car repainted properly, then the best you can do is use the SOFTEST car wax you can find.  Wax and polish are used interchangeably with car waxes, so don't worry about that.  But there are liquids, solids and spray ons.  I would get a liquid wax.  But whatever you get, DO NOT get an abrasive wax.  That will ruin your old paint.  Also, you need to be careful not to get the wax on any plastic parts.  After that the only instruction is to take your time, apply the wax in the shade, or better yet, inside a garage, and take your time.  The best shine will result from the most physical effort on your part.  This will take most of an afternoon, if not all day.  I dunno what you have in UK, but in USA, Mothers and 3M make pretty good auto waxes.  Just read and follow the instructions on the bottle.  GL!  You won't get a "car show" finish, but your car will look better than it does now.
Title: Re: How do you polish a car?
Post by: iri on Thu, 20 February 2014, 02:52:44
Show Image
(http://i.imgur.com/oIKUEAz.jpg)

this car is polished from the inside and only slightly polished from the outside.
Title: Re: How do you polish a car?
Post by: Oobly on Thu, 20 February 2014, 04:31:02
Here is a very detailed detailing guide: http://www.detailedimage.com/Auto-Detailing-Guide/

If you just want a good wash and shine job, you can skip a lot of that, but if you want it to be showroom, "I can see myself in every surface" shiny, go the whole hog.

For my daily driver (literally) I do a simple wash and hand polish (twice a year). With a machine wash every now and then when I don't have time. It's not super precious to me, though, like my old classic Mini. That is always washed, waxed and polished by hand.
Title: Re: How do you polish a car?
Post by: Malphas on Sat, 22 February 2014, 10:40:35
By which I mean, like really really polish a car. That showroom type finish where all the surfaces are like mirrors. What are the processes and products involved?  I would normally just pay someone to do it, but this is a twenty year old car with a couple of rust spots (but otherwise in mostly reasonable shape), with sentimental/collector value, and I'm kind of precious about it and don't trust a valet service not to chip paint into the rust.

Well, these smarty pants are not going to be any help.

To get the kind of shine you are looking for you need to repaint the car.   And the type of repainting that will give you what you want will cost you about $1,000 (USD), or more, actually you can spend $5,000, if you want to.  That will give you a beautiful multi-layer paint job, like you see in magazines and car shows, where they first sand the car down to bare metal, then bondo the rusted out parts, then spray the entire car with primer, let it dry, then spray with paint.  Then clear coat, then dry, then paint, then dry, then clear coat, then dry, then paint, then dry, then clear coat, then dry, you get the idea.  They will keep going, as long as you are paying.  The more coats, the "deeper" the shine.  If you've ever heard of a 12" shine, that's where you hold a ruler up the car, and see how much of the ruler you can read in the reflection.  If you can see all 12" reflected, that's a sweet t!ts paint job.  Even 6" is still a mildly sugary t!ts paint job.  3" is more like sour t!ts.  And 1" is like saggy, sour, wrinkledy old teats.

And if you don't want to pay to have car repainted properly, then the best you can do is use the SOFTEST car wax you can find.  Wax and polish are used interchangeably with car waxes, so don't worry about that.  But there are liquids, solids and spray ons.  I would get a liquid wax.  But whatever you get, DO NOT get an abrasive wax.  That will ruin your old paint.  Also, you need to be careful not to get the wax on any plastic parts.  After that the only instruction is to take your time, apply the wax in the shade, or better yet, inside a garage, and take your time.  The best shine will result from the most physical effort on your part.  This will take most of an afternoon, if not all day.  I dunno what you have in UK, but in USA, Mothers and 3M make pretty good auto waxes.  Just read and follow the instructions on the bottle.  GL!  You won't get a "car show" finish, but your car will look better than it does now.

Well I was considering having the rust removed and filled, but decided against it because I doubt the paint would ever match and so would rather leave it as is (the rust is under the paint at present). I'm not against the idea of repainting the car entirely, but it had just never occurred to me as an option. It's tempting but my concern would be the modern paint being inferior to the original factory paint (which I think was probably lead-based).

I understand the terms "was" and "polish" are used interchangeably in products, and many containing both (or claiming to, at least), but I was under the impression that a true polish is an abrasive, used to buff out swirl marks, superficail scratches, etc., whilst wax is a coating applied to protect the paintwork post-polishing. Is this not correct? You mention not to use an abrasive wax, but how else can you remove swirls, etc? I assumed part of the process would be using T-Cut to remove a layer of paint.
Title: Re: How do you polish a car?
Post by: Malphas on Sat, 22 February 2014, 10:51:02
Here is a very detailed detailing guide: http://www.detailedimage.com/Auto-Detailing-Guide/

If you just want a good wash and shine job, you can skip a lot of that, but if you want it to be showroom, "I can see myself in every surface" shiny, go the whole hog.

For my daily driver (literally) I do a simple wash and hand polish (twice a year). With a machine wash every now and then when I don't have time. It's not super precious to me, though, like my old classic Mini. That is always washed, waxed and polished by hand.

This is exactly the kind of thing I was looking for, cheers.
Title: Re: How do you polish a car?
Post by: filphil on Mon, 24 February 2014, 00:41:36
autogeek is a good source for polishing cars too.  Check the forums and read up before you ask questions like any other forum.
Title: Re: How do you polish a car?
Post by: dgreekstallion on Thu, 06 March 2014, 19:53:00
Amateur detailer here: I just do it by hand, I'm not skilled enough to use a random orbital yet, for fear of burning the paint.
Title: Re: How do you polish a car?
Post by: demik on Thu, 06 March 2014, 20:18:33
Clay bar - it will pull particulates out of the clear coat and paint itself.  You'll do the first wash and while the car is still wet, use the provided "lube" and rub the clay bar lightly over the car's surface, folding the bar regularly to get a fresh surface on the clay and to not leave little scratches in the paint/clear.

Compound - It's a more abrasive type of polish that will remove more contaminants.  You'll apply it with a sponge by hand with a light touch as if you aren't careful, you can actually damage the surface.  You'll know it's time to remove it when it's slightly reflective.

Polish - See compound but with a less abrasive fluid.

Wax - Apply in a similar fashion to the compound/polish, but instead of it becoming reflective when it's time to clean, it will go cloudy.  You'll know you did right when it feels glassy smooth.

This is all doable by hand, which is what I would recommend if you've never done this before. 

so we're going to ignore this?
Title: Re: How do you polish a car?
Post by: Topre on Thu, 06 March 2014, 21:00:47
I have never tried detailing a car by myself so for those who have, how much will a full polishing kit cost, and how long does it take to fully detail a car (interior and exterior)?
Title: Re: How do you polish a car?
Post by: Malphas on Thu, 06 March 2014, 23:14:53
Clay bar - it will pull particulates out of the clear coat and paint itself.  You'll do the first wash and while the car is still wet, use the provided "lube" and rub the clay bar lightly over the car's surface, folding the bar regularly to get a fresh surface on the clay and to not leave little scratches in the paint/clear.

Compound - It's a more abrasive type of polish that will remove more contaminants.  You'll apply it with a sponge by hand with a light touch as if you aren't careful, you can actually damage the surface.  You'll know it's time to remove it when it's slightly reflective.

Polish - See compound but with a less abrasive fluid.

Wax - Apply in a similar fashion to the compound/polish, but instead of it becoming reflective when it's time to clean, it will go cloudy.  You'll know you did right when it feels glassy smooth.

This is all doable by hand, which is what I would recommend if you've never done this before. 

so we're going to ignore this?

Yeah, this was a good answer. I must have missed it somehow.
Title: Re: How do you polish a car?
Post by: dgreekstallion on Thu, 06 March 2014, 23:58:24
I wouldn't leave the car wet after washing to use as lubricant for clay-barring unless your car was rinsed off perfectly with spotless/distilled/etc. water.
Title: Re: How do you polish a car?
Post by: bumgrapes on Fri, 07 March 2014, 04:31:35
Clay bar - it will pull particulates out of the clear coat and paint itself.  You'll do the first wash and while the car is still wet, use the provided "lube" and rub the clay bar lightly over the car's surface, folding the bar regularly to get a fresh surface on the clay and to not leave little scratches in the paint/clear.

Compound - It's a more abrasive type of polish that will remove more contaminants.  You'll apply it with a sponge by hand with a light touch as if you aren't careful, you can actually damage the surface.  You'll know it's time to remove it when it's slightly reflective.

Polish - See compound but with a less abrasive fluid.

Wax - Apply in a similar fashion to the compound/polish, but instead of it becoming reflective when it's time to clean, it will go cloudy.  You'll know you did right when it feels glassy smooth.

This is all doable by hand, which is what I would recommend if you've never done this before. 

In addition to this - NEVER USE A SPONGE! You will just be rubbing dirt and scratching your car. Use a deep pile wash mitt (lambs wool is preferred by most)

Also apply the two bucket method. One for clean soapy water, the other for rinsing your mitt. That way your soap bucket stays as clean as possible. Add a couple of grit guards to both to reduce contamination further.
Title: Re: How do you polish a car?
Post by: tjcaustin on Fri, 07 March 2014, 14:21:41
Amateur detailer here: I just do it by hand, I'm not skilled enough to use a random orbital yet, for fear of burning the paint.

How I learned to not be afraid of a random orbital (I think it was a lower speed one, but anyways...): The guy showing me how to use it walked it over to his car, plopped it on the middle of his hood and pressed it down for a good 20 seconds with the power on.

The washing tips are good and I didn't add them as I had assumed he'd got that part down well, but wasn't as informed about the detailing/polishing process.  Also, good point about the wet car/clay bar.  I use filtered/spotless sprayer to rinse and didn't think others might just use a hose.
Title: Re: How do you polish a car?
Post by: strict on Fri, 07 March 2014, 14:48:36
Amateur detailer here: I just do it by hand, I'm not skilled enough to use a random orbital yet, for fear of burning the paint.

You would have to be doing something seriously wrong to burn paint with a random orbital. Burnt paint/clearcoat is almost exclusively from rotary polishers. I'm terrified of using rotaries but a RO polisher is about as noob-friendly as them come.

To answer the OP's question. Get a porter cable 7424, some foam pads, and some polish/compound. Make sure your car is super clean first (wool wash mitt and clay bar) and then use the RO polisher to clean up the swirl marks and oxidation. My personal preference for polish has always been the Optimum brand. Then wax/seal it and stand back and admire all your hard work.

You can get a nice kit with everything you need to detail your car and probably enough left over to do another 10-15 cars from here - http://www.autogeek.net/optimum-porter-cable-kit.html

Go to autopia.org and read as much as you can. Autopia is to car detailing what GeekHack/DT/KDB are to keyboards.
Title: Re: How do you polish a car?
Post by: dgreekstallion on Fri, 07 March 2014, 20:20:17
Amateur detailer here: I just do it by hand, I'm not skilled enough to use a random orbital yet, for fear of burning the paint.

How I learned to not be afraid of a random orbital (I think it was a lower speed one, but anyways...): The guy showing me how to use it walked it over to his car, plopped it on the middle of his hood and pressed it down for a good 20 seconds with the power on.

The washing tips are good and I didn't add them as I had assumed he'd got that part down well, but wasn't as informed about the detailing/polishing process.  Also, good point about the wet car/clay bar.  I use filtered/spotless sprayer to rinse and didn't think others might just use a hose.
Thank you fellow North Texan-ite.

Title: Re: How do you polish a car?
Post by: paicrai on Sat, 08 March 2014, 04:25:39
I don't know, but don't start Russian it.










that was awful
Title: Re: How do you polish a car?
Post by: Monidas on Sat, 08 March 2014, 04:41:31
In case OP or anyone else around here is interested in detailing, the /DRIVE network has an extremely interesting program on detailing (extremely interesting as detailing goes, obviously). I thoroughly recommend it and there are many good tips in there.
https://www.youtube.com/playlist?list=PL96D52AF54166C886
Title: Re: How do you polish a car?
Post by: Malphas on Sat, 08 March 2014, 08:17:58
Amateur detailer here: I just do it by hand, I'm not skilled enough to use a random orbital yet, for fear of burning the paint.

How I learned to not be afraid of a random orbital (I think it was a lower speed one, but anyways...): The guy showing me how to use it walked it over to his car, plopped it on the middle of his hood and pressed it down for a good 20 seconds with the power on.

The washing tips are good and I didn't add them as I had assumed he'd got that part down well, but wasn't as informed about the detailing/polishing process.  Also, good point about the wet car/clay bar.  I use filtered/spotless sprayer to rinse and didn't think others might just use a hose.

Yeah, I think I'm going to get a random orbital, I didn't know these things existed when I made this thread. I found out one of my friends has a rotary polisher, but unlike the RO, I'd be apprehensive I'd **** things up with one of those. He warned me if I wanted to borrow it that it can burn the paint off edges and things if you're not careful.
Title: Re: How do you polish a car?
Post by: Malphas on Sat, 08 March 2014, 08:24:03
Those Porter Cable's don't seem to exist over here. What everyone seems to use is a inexpensive one called the DAS-6, or a slightly more expensive one called a Meguiars G220 (which seems to be sold all over the place at car accessory stores and stuff). The next step up from that are ones made by a company called Flex, and are about at least four times the price - are they significantly better?