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Author Topic: Sanding Paint Prep.  (Read 1451 times)

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Offline John Turner

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Sanding Paint Prep.
« on: February 28, 2012, 01:44:34 PM »
I am going to have my 72 Wagon repainted.  I plan on doing the prep. myself.  I have a 5" random orbit sander (Porter Cable) used for woodwork.  Would you use this or should I buy a different one specifically for auto prep??  Thanks. jt

Offline dave1987

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Re: Sanding Paint Prep.
« Reply #1 on: February 28, 2012, 11:03:56 PM »
Personally I would do it all by hand, being a perfectionist.

However, my brother used a woodworking orbit sander on my 78 sedan before he repainted it. It came out pretty good but there are some spots that you can see swirling from the sander being pressed to hard or to coarse of grit used.

I wouldn't use anything less than 400 grit, then do again with 600 grit, finalizing with a palm sanding block and once more with 600 grit to ensure there are no swirl marks. This is how I may be doing my '73 wagon.
1978 Ford Pinto Sedan - Family owned since new

Remembering Jeff Fitcher with every drive in my 78 Sedan.

I am a Pinto Surgeon. Fixing problems and giving Pintos a chance to live again is more than a hobby, it's a passion!

Offline dga57

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Re: Sanding Paint Prep.
« Reply #2 on: February 28, 2012, 11:32:00 PM »
Personally, I prefer a DA, then follow up with a jitterbug.
Dwayne :)
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Offline popbumper

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Re: Sanding Paint Prep.
« Reply #3 on: February 29, 2012, 11:50:51 AM »
If you are painting over existing/repaired factory coat, scuff everything including your repair areas with 320-400 grit, and that will be adequate. This is the advice my paint shop gave me, and I have sanded the entire car by hand. The door edges and jambs that I painted turned out perfect - no sanding swirls or marks at all. The rest of the car needs painted, but it's off to a good start. These cars are not massively large, so hand sanding is a reasonable and achievable option.

Chris
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Offline carbomb

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Re: Sanding Paint Prep.
« Reply #4 on: March 16, 2012, 11:41:48 PM »
use 320 on a da keep it flat and always moving. Then seal it and paint it