I bought a Pasche airbrush before Christmas thinkng I was going to do my weatherng with it, but have played around with the pastel chalk method instead, which seems to be working pretty well so far. I've also just bought 2 BNSF GP-38 engines and don't have the guts either to even try weathering them until I get real good at it, so I'll just leave hem new looking for the time being.