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Joined: Sep 2021
Posts: 28
Grease Monkey
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Grease Monkey
Joined: Sep 2021
Posts: 28
Phase 1 was about original War Time colors. That thread can be found in category 1942-45 Military and Commercial Vehicles. I am now confidant enough about colors to start painting.

I have purchased from Jim Carter Truck Parts, a quart of Turret Gray, Grill & Bumper Paint, 43-45 Chevy. PT100. More specifically it is Commercial Performance Coatings, ALK-200, by PPG. It is an Acrylic Modified Alkyd Enamel with Xylene which can be used as a thinner or clean up. It comes pre-mixed for compressed air conventional spray equipment, 40-50 psi at gun with 1.3-1.7 fluid tip.

However, as a retired wood furniture maker, I have a 10 year old HVLP sprayer. I want to use it to apply this paint to my dash. In other words, a highly visible area, so must come out Factory! (For info on why I’m using Grill & Bumper paint on the dash, see previous thread.)

In the paint literature, it specifies this pre-mixed paint can be used in an HVLP sprayer rated at 10 psi with same size spray tip as for conventional gun. Problem is, my sprayer only produces 4 psi. Any comments?

On paint viscosity, the sprayer literature describes using their “viscosity stick”, paint should come off stick in drops one second apart. It comes off a little quicker than that, so I’ll use their needle and nozzle for “Thinner” material. It definitely does not need to be thinned, as all of my wood finishes did.

So before I get going, does anyone have any advice? I know about sanding down to bare metal with a grit that will leave some “tooth”, having everything clean, address dust & temp, those type of basics. Paint instructions call for 2 coats, but I think I want 4, 10-15 minutes between coats. Instructions don’t mention primer. With all rust having been sanded off, is there any benefit in “pickling” with say, POR15 Metal Prep?

Thanks,

Jake

Joined: Jan 2017
Posts: 263
Backyard Mechanic
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Backyard Mechanic
Joined: Jan 2017
Posts: 263
I have used the ALK-200 with hardener (ALK-201) on many projects. I believe the general rule on metal is to use primer to block moisture and therefore rust. You should not have a problem with rust if you use PPG epoxy primer against the metal. You can then use the ALK as a color as well as a protective coating. I even dip coat small parts with it.
I stick to one family when I paint. Scratch with 80 grit, PPG epoxy coating, PPG surfacer for scratches and blemishes, then the PPG ALK with hardener.

Mike

Joined: Sep 2021
Posts: 28
Grease Monkey
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Grease Monkey
Joined: Sep 2021
Posts: 28
Thanks Mike,

Your advice parallels comments by Tech Advisor Dave. I'm ready to move forward with some informed experimentation.

Jake


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