ThruPaint sounds perfect, going to try it now, thanks for the pbacot. I make some of my models in GtkRadiant (used for q3, similar to hammer for hl1/source), and export as OBJ.

Thanks TIG! I will put in a good word for you if I die first.

@jesterrrrrr said: Is there a way of reversing faces without exploding? You can have a look at the ReverseOrientFace tool (part of Fredo tools)