ORIGINAL: IL2windhawk
This could become a very good thread. I hope the tips keep coming. I am bookmarking.
I for one am interested in paint chips. On small scale models, I found them very hard to produce but I eventually developed a technique after lots of practice. That said, I cannot imagine the same technique would work out very well on larger RC planes.
A got a tip on chips from a fellow and tried it. here are a couple pictures. He crumples up tin foil, paints it with silver paint, then dabs it on. I tried it on the leading edges of the wings and tail, and on the front of the cowls. You get that random irregular look you need and it takes all of maybe two minutes.