drybrushing with tamiya

Goatboy;
I had a similar problem in the past, the main reason for this is that Tamiya thinners in the new coat will soften the paint of the coat under it unless it is fully cured.

I overcome the problem by either;
allowing at least three days or longer between coats to allow the first coat to fully cure.

or applying a clear sealing coat (non Tamyia - usually Testors dulcoate) over the orginal coat before dry brushing.
This also has the advantage of making easy to remove the dry brushed finish if you you are not happy with it, without damaging the base coat.

South Aussie

thanks for the advice. three days is quite a while to cure, but if it keeps the paint from coming off i guess its worth it!

Is it worth more than the time it will take to repaint or repair the damaged finish or the loss of alot of creative hard work?
Most figure guys I have talked to, (myself included) take at least 24 hours between coats or paint steps to allow for at least a minimal cure. I think you will be happier if you take the time.
BTW, dry brushing is just that, and the amount of paint you use should be minimal. So even if you do rush it, it should be built up slowly. Take three or four sessions or applications before it starts to build to where you can see it. Your first application should almost be negligable, and it should be built up over a succession of applications till you are happy with the resuts.
3 or 4 days is still better than the week or so for oils. (in some cases considerably longer).
Good luck and lets see some pics of the finished figs.

Mike