@Ted S posted:What size brush? And how did you avoid getting excess paint on the wheel "treads" (surfaces that contact the rail)? Sorry for all the questions but I don't want to screw up locos that I paid several hundred dollars for, even though they aren't worth anywhere near that now.
I used a size 0 angular flat brush. The paint is water based, so any that ended up on the treads or wheel faces was wiped off with a damp cotton swab. Since the paint cleans up so easily, you shouldn’t come close to permanently messing up your locos.
