I’m fairly new to the hobby so bare with me here…
I was hand painting on some flat black the other day on some tank wheels that I had airbrushed olive drab. While paint in the flat black, I noticed that on the second or third stroke the brush was removing the olive drab down to the plastic? What would be causing this? Do I need to thin the paint when hand painting? I do when airbrushing.
Help!!!
was the olive drab dry when you started brushing the flat black?
The undercoat has to be completely dry before painting over it. Unless the olive drab coat wasn’t completely dry, I don’t see how this could happen.
dry for two days…
The only thing I can come up with is that I didn’t wash the model before painting it? I know it says to do that, but is it really important?
I’ve noticed that to, and also usually when brushing flat black. Not sure what causes it to happen, but it does. Three ways you can work around it, 1) Cover it in one brush stroke, 2) If the part is very small just sort of dab the paint on (doesn’t work if the part is not really small) 3) Shoot a light coat of Future over the parts first.
Thanks for the tips, very strange. I wonder whats causing this?
For some reason the thinner in the newly applied paint is thinning the old paint, obviously, but I don’t know why it does. When you want to get old paint off something nothing will touch it. Murphy’s Law at work I guess [:D]
No, the paint I’m painting on is straight out of the jar. It’s not thinned. I only thinnned the sprayed on paint.
I meant the thinner/carrier/solvent/water/whatever-they-call-it that is already in the paint straight from the bottle. I didn’t mean that it was thinned any more; bad choice of words.
Cincojoe:
I have found out from experience that its better to leave one coat of Tamiya for at least 72 Hours before applying another by brush. This is related to the curing properties of Tamiya acrylic paint, it has nothing to do with the drying of the paint. The paint will dry first but it will still be curing for a greater period of time. If it hasn’t cured fully the solvents in the next coat will soften the first coat allowing the brush to remove it. This longer period of curing does not have have the same effect on earlier coats when when airbrushing unless you rub something over the surface.
Yeah, it’s a property of Tamiya paint when brushing over another layer of Tamiya paint. You can pick up another bottle of flat black paint from Testors Acryl or Polly Scale line of acrylic paints. They don’t have this problem with brushing over another layer of paint that’s not fully cured. Polly Scale Grimy Black is an excellent color for tires.
The one thing with Tamiya acrylic paint, and Gunze to a lesser extant, is that it is very tricky to hand brush.
hey thanks for the tips guys. The modeling scene sure has changed since I was kid…lol