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Old 02-10-2012, 01:19 AM
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Best modern technique to prep a car for paint?

I went to trade school for auto body repair about 20 years ago. The procedure they taught us at that time to do a quality paint job on a car is the following.

1. Strip old paint off down to bare metal.
2. Hammer out dents, apply body filler, and sand smooth.
3. Spray epoxy primer over entire surface.
4. Spray high build primer and block sand several times to get a perfect finish. Use a guide coat as needed.
5. Spray a sealer over the high build primer.
6. Spray your paint over the sealer.

This worked great at the time as I turned out several show car winners using the above methods.

This was 20 years ago and I have not painted a car since. I am planning on painting a car in the near future.

Is this the procedure I want to follow or have we come up with a better way of doing things now?

(I thought one day they would figure out a way to combine the epoxy and hi build primers into one liquid?)

Are the water based paints worth using?

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Old 02-10-2012, 07:10 AM
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Quote:
Originally Posted by HotRodMan
I went to trade school for auto body repair about 20 years ago. The procedure they taught us at that time to do a quality paint job on a car is the following.

1. Strip old paint off down to bare metal.
2. Hammer out dents, apply body filler, and sand smooth.
3. Spray epoxy primer over entire surface.
4. Spray high build primer and block sand several times to get a perfect finish. Use a guide coat as needed.
5. Spray a sealer over the high build primer.
6. Spray your paint over the sealer.

This worked great at the time as I turned out several show car winners using the above methods.

This was 20 years ago and I have not painted a car since. I am planning on painting a car in the near future.

Is this the procedure I want to follow or have we come up with a better way of doing things now?

(I thought one day they would figure out a way to combine the epoxy and hi build primers into one liquid?)

Are the water based paints worth using?
SPI epoxy isn't "HI" build, but it iw very easy to use as a build primer.

good read: http://www.southernpolyurethanes.com...ct%20paint.htm
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Old 02-10-2012, 07:20 AM
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I think we have better materials now than we did then..Only thing that has changed is that we now do 2 wet coats of epoxy primer on everything before we do any filler work. The SPI epoxy is a great product and sands out well but being the guy I am I prefer a 2k primer over the epoxy for my blocking step..

of course we try and get the metal work as good as we can before we paint..

Sam
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Old 02-10-2012, 04:17 PM
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Wash the car, with detergent first.
Clean the car again with wax and grease remover.

Now you can sand.
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Old 02-11-2012, 03:02 PM
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My BEST work always starts with stripping the old paint so theres no need to wash or dewax ,anything else is just a repaint....
After (chemical) strpping (I dont care much for media blasting) I clean the metal with wax & grease remover then clean and etch the metal with Ospho,sand,epoxy,guide coat block ,bodywork and filler,epoxy again,more epoxy, then epoxy again...always two good wet coats at a time per day, more guide coat and if its ready epoxy reduced 10-20% as the sealer then paint,sand and buff....Thats if time allows ,if not I'll switch to a urathane primer after the epoxy is on the filler....SPI is ALWAYS my brand of choice....
Not much has changed in proceedure in the past 20 yrs but some of the products have gotten much better and SPI epoxy is at the very top so is their clear..
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Old 02-11-2012, 06:23 PM
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DBM, what do you use for paint stripping?
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Old 02-12-2012, 01:14 AM
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I used Kleenstrip aircraft stripper for years but they make another one in a copper colored can thats a bit better (for some reason I can never remember the name) but they are both sold at lowes & home depo and they're always right next to each other..
I realize that a lot of guys think its slow and messy but its really not with a few pointers.....when I was a just a newbie I was a paint stripper and thats all I did other than prime for about a year...so for me its pretty ez...
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Old 02-12-2012, 01:54 AM
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Wash the car, with detergent first.
Clean the car again with wax and grease remover.
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Last edited by OneMoreTime; 02-13-2012 at 08:45 AM. Reason: Advertising. Please see: commercial posting guidelines.
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