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toyota supra mk IV

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  • Member since
    January, 2017
toyota supra mk IV
Posted by Adreon on Wednesday, January 04, 2017 2:19 AM

Hi guys well im pretty new to this hobby and have some questions. Firstly id like to know how to prep the car for painting as i went over the car with 600 sandpaper before i primered it and then after i put the colour on i see it maked like a defect(there is like dust under the paint and a blackish mark. So i would like to know if i sand it down again and wash it off and redo the primer and paint would it work?

Tags: 1:24 scale , supra
  • Member since
    April, 2015
  • From: Detroit, MURDER CITY
Posted by RudyOnWheels on Tuesday, February 14, 2017 1:38 PM
Sounds like you started with too-gritty (too rough) of sandpaper. Some people wash their bodies in dish soap to remove any mold agents that are on the body from the molding process, but unless there are defects, I usually either A. just prime the body as-is, or B. sand it with some 1500 grit if I think it needs it, then prime it. Some people get crazy and use 2000 grit on up to 15,000 grit polishing pads, but that is how you get super-nice paint. What is on top is only as good as what is underneath. Paint will never "hide" shoddy workmanship underneath. Try a much finer grit next time. Good Luck, Rudy
  • Member since
    June, 2010
  • From: Australia
Posted by OctaneOrange on Saturday, February 18, 2017 3:27 AM

RudyOnWheels
Some people get crazy and use 2000 grit on up to 15,000 grit polishing pads

Those are for polishing paint, not prep prior to painting. if you used 8000 grit or finer before primer it wouldn't stick, due to no key or teeth and will peel off (especially if using masking tape).

  • Member since
    June, 2010
  • From: Australia
Posted by OctaneOrange on Saturday, February 18, 2017 3:31 AM

Adreon
after i put the colour on i see it maked like a defect(there is like dust under the paint and a blackish mark). So i would like to know if i sand it down again and wash it off and redo the primer and paint would it work?

Dust usually shows up as a high line under the paint.

you can do touch up like they would do for a small scrape in a body shop. Sand it back, if  you can avoid going through the primer, you don't need to re-primer it and can just add a small touch up of base color.

I'd mask off the panel and repaint the whole panel.

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