Paint Finish

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Rob Davis
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Paint Finish

Postby Rob Davis » Fri, May 08 2009, 11:18AM

Do any of you (all of you?) use a topcoat over catalyzed painted finishes? Our paint supplier says unnnecessary but our hands and fingers say we need it to make it smooth to the touch. If you use one, what do you use and does it affect the color of the paint? Thanks in advance fo rthe answers.

Al dedenus
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Re: Paint Finish

Postby Al dedenus » Sat, May 09 2009, 7:58PM

We go straight off the gun with the paint (no clear topcoat over it).If its a complex peice that can't be taken apart to spray we retard the paint to stop blow back overspray so the whole peice stays "wet" during polishing.This ensures a smooth finish.I've had polishers that give it a coat wait a few minutes till it tacks off give it another coat and finally go over the whole job with retarder thinners to wet it down.Easy to get runs if you don't know what your doing !

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Gary Puckett
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Re: Paint Finish

Postby Gary Puckett » Sun, May 10 2009, 8:22AM

Are you using a lacquer paint?

I get my clear coat tinted to the color, spray and it comes out very smooth

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Re: Paint Finish

Postby Stephen Tinkler » Tue, May 12 2009, 3:40AM

Rob what is your preperation procedure?

Stephen

Rob Davis
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Re: Paint Finish

Postby Rob Davis » Tue, May 12 2009, 5:50PM

Maple cases, sanded progrssively up to 220 grit finsih sanding, use primer per paint supplier requiremetn, then sand and clean, first layer of topcoat, fine sand and clean, then 2nd layer, fine sand and clean, 3rd topcoat, no sanding. Problem is that ther are little bumps (tiny) and the insides fo the frame openings are not smooth, plus if we try to remove these really fine bumps, the finish gets scuffed and we lose the sheen. Some people use topcoat and others use wax and some nothing. Th efinish is relaly quite nice and 95 out of 100 say nothing. But we are wotrking with one of the 5 right now and we ahve been told by a finisher that we shoudl use a topcoat after sanding just to put the sheen back on. Just wondering if anyone else does that.
We are between telling the customer that we have doen this per industry specs and they are being unrealistic as to the finish (inspecting with a drop cord and a spotlight - no lie!) and trying the topcoat and seing if we can satisfy them.

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Re: Paint Finish

Postby Rick Palechuk » Wed, May 13 2009, 7:58AM

The little bumps, do they fell like dirt or orange peel? If it's orange peel then you need to use an retarder ( watch for runs). Are the bumps consistent over the entire surface? If the edges of the frames are dry this could be overspray.

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Re: Paint Finish

Postby Will Williamson » Wed, May 13 2009, 8:39AM

What brand of finish are you using? We use M L Campbell. When we have a problem thier sales rep come to the shop or I stop by the distributors facility where they have a complete testing and color sampling department . I like to stop in there because they have all the latest equiptment and thier man who is in charge of that area sprays all day every day and on the odd ocasion where I am wanting a third opinion i contact M L Cambells Labratory in Ontario Canada 800 364 1359. I've tried Sherwin Williams products but I can't get the tech support at the same level
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