Novice paint questions, ChromaBase color sanding |
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Novice paint questions, ChromaBase color sanding |
Rleog |
Aug 6 2013, 09:59 AM
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#1
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Senior Member Group: Members Posts: 608 Joined: 12-October 03 From: Middleton, MA Member No.: 1,239 Region Association: North East States |
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First, thanks to the pro's who frequent this board. Your suggestions to many have been invaluable as I progress with my projects. With regard to painting and posts on this board, I've seen Scotty's silver 930 work of art, and can only add that, for $12,000, that owner got a steal. I've also seen Eliot's adventure with orange peal, which evidently was due to bad paint. Please bear with me if my questions have been answered previously, and I haven't encountered them. After stripping my car to bare metal and prepping, I sprayed etching primer, then sandable primer. When it was time for color, the DuPont ChromaBase went on thickly and resulted in coarse orange peal, coarse enough to make Eliot jealous. I figured that I'd have to start over. It was the last warm weekend of fall and I had no time then to sand down and spray another day, so I left the metal protected by my coarse paint job. I did not spray clear over it. This summer, a body shop owner whom I chanced across told me to try color sanding and see where I would get. I've sanded 400, 600 , then 1000 grit, and now have a vastly improved smooth surface but have broken through to primer in several areas. My questions: 1. Can I spray more color over the newly sanded color surface, and, if yes, what grit should I sand with before shooting more color? 2. There are a couple of areas where I'd like to do better prep of surface irregularities. I'm assuming that I'll have to go down to bare metal to hammer/dolly and/or body fill these areas, then go through the etch, prime, color process again. Body filler like Bondo should not be applied over color or primer, then a sealer attempted before final color coat. Correct? Thanks in advance. I have incredible respect for you painting artisans. |
scotty b |
Aug 7 2013, 09:45 PM
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#2
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
yes 2 parts color : 1 part reducer. Most of the lower line paints call for 1:1. All that does is thin it down so you have to apply more material. In my experience, I mix them all at 2:1 and only mix Spies and PPG 1:1. The others at 2:1 are closer to the consistency of Spies and PPG
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