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-   -   perfect paint job (http://www.hotrodders.com/forum/perfect-paint-job-223663.html)

acman 09-03-2012 08:42 AM

perfect paint job
 
if i sandblast to bare metal do I still need to do 80 grit DA scratches?

timothale 09-03-2012 10:47 AM

sand blast ?
 
I had my model A pickup bed sand blasted and even after washing, blowing with air a few times I still ended up with sand in the color coat. I only sand blast bits and pieces that can't trap sand.

MARTINSR 09-03-2012 11:44 AM

What do you plan on sand blasting? DO NOT sand blast sheetmetal body panels! It is VERY dangerous as you can warp them VERY easily.

But if a piece of metal sand blasted doesn't need any sanding unless it was pretty coarse sand that was used to blast it. In that case 120 would be better.

Brian

Malibusurfer 09-06-2012 09:55 AM

I have always sanded with 80 grit with a DA after sandblasting!! Primer is a mechanical bond and those scratches make a great base. Also DA'ing you get rid of any dust etc hiding in crevices ( microscopic ) that sandblaster made that air may not be able to get out. Not sure if I need to, I just always have and never have had an issue..


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