- Vitamin K
- Pine Head Legend
- Posts: 1076
- Joined: Sat Apr 20, 2013 7:26 pm
- Location: Derwood, MD
My typical paint routine involves at least two coats of primer (sanding after each) and two coats of base color. Colors need a few days between coats to dry, with wet sanding between.
Obviously, you can't do this at a workshop, where you have a window of a few hours.
I could possibly see one shot of primer, quickie dry (maybe with a blow dryer) and then a coat of color. I don't have high hopes for the results, though.
Please share your workshop paint experiences/strategies.
- Darin McGrew
- Pine Head Legend
- Posts: 1746
- Joined: Fri Jul 18, 2003 1:23 pm
- Location: Mountain View, CA
We encourage everyone to apply multiple light coats rather than one heavy coat, Most of the spray paints specify that you should recoat within 1 hour or 2 hours, or you should recoat after 48 hours or 72 hours. It is perfectly possible to apply multiple light coats during a single hour at a workshop. And sufficiently motivated teams can apply additional coats at home, or can apply additional coats at a later workshop.
But we don't push more advanced techniques (e.g., allowing the top coat to dry for several days, then wet sanding before applying another coat). We don't discourage them either, but it's up to more ambitious teams to take the initiative.
I believe you're talking about the water-based acrylic craft paints. They do work well, and even come in metallic colors. We used them our first year of Derby car making and loved them.Speedster wrote:We don't offer painting at our workshops. Unless you are really into refinishing and going for a super smooth, high gloss finish, spray painting is not necessary. In fact, it's dangerous. A little boy with a dust mask isn't being protected. Many people think if the over spray is stopped they're fine. The truth is it's the fumes that kill you. If you can smell it you're not being protected. I think the scouts, especially the younger ones, want to pick out their favorite color and put it on with a brush. Walmart has bottles of paint that are very inexpensive and are water based. Painting his car with a brush might be the most exciting and enjoyable part of building his car.
And you're correct. An N95 dust mask doesn't stop VOCs (Volatile Organic Compounds) which are dangerous to us living things. If we can smell them, they're in our system. You need a respirator with the ability to filter them to be protected.