How many layers of oil paint

Ignoramus11495 · 2010-02-09T14:19:56+00:00

Lathe is coming along. One pin in the apron (part of interlockmechanism) was bent, but I was able to straighten it with the press. I have started painting the lathe, for now it is just the apron. Itried to be good about stripping the paint and degreasing. plan on using Valspar oil paint and anti-rust red primer, whichseems to be a decent, thick alkyd paint. I believe it to be oilresistant, but if anyone thinks otherwise, I would like to know.The question is how many layers of primer and paint is best. I wasplanning on two layers of primer and two layers of paint. This meansthat it takes four days to paint something, with one day per layer dueto drying time. i

Feb 09, 2010 25 Replies

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john 16 years ago

Also especially with epoxy paints the surface has to be clean, very clean. Do not use silicon spray cans anywhere around the machine after you prep it for painting. The silicon spray lubricants will cause the paint not to bond properly. The sprays can travel a great distance in the air.

When I paint my machines I use a spray sandable primer surfacer aerosol can. The local surplus place sells some real good spray paint for a buck a can. It covers a lot of chips and scratches. I usually use an alcoyd paint for the top coat. The last couple machines I just used the spray can and then touched up the lettering, handles and misc, levers with a paint brush and oil based paint. Of course all my machines are working commercial shop machines but the spray paint still holds up well and with the spray cans it makes it easy to touch any problem areas.

John

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DoN. Nichols 16 years ago

I was assuming spray painting. I think that brush painting would not be as hazardous, unless you move your brush at supersonic speeds. :-) After all -- the problem is inhaling the curing agent, I believe.

Certainly so if you spray -- and probably a good idea even with a brush. But this will give you plenty of time to prime it (as needed for the paint you choose) and let it dry fully. :-)

I'm not sure how thick it would be -- which could be a problem with brush marks brush painting. Of course, with spray, you need to keep in mind the cure time and clean the spray gun well before each batch you mix up gets close to cure. :-)

Good Luck, DoN.

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Richard J Kinch 16 years ago

Yes, or "curing agent". The curing action is catalytic polymerization, which converts the resin to a thermoset material. Hence "catalyst" is an appropriate term for what an epoxy hardener is in principle.

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cavelamb 16 years ago

Maybe. But we maintain the myth that there is a difference.

Viva la difference!

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dcaster 16 years ago

I happened to meet a couple of Du Pont engineers visiting from Germany. They work for the car paint division. And asked one about painting, specifically about how many coats of primer. He said one coat of primer. But then added that they are in the midst of rolling out the second generation of water based automotive paint. It consists of a base coat with the color and a clear top coat. NO PRIMER.

That sounds pretty neat to me. Automotive paint which ought to stand up to exterior conditions. Just one coat if you don't need a clear coat. And water clean up. Will have to see if I can find out more.

Dan

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