simple question :-D
would it work on a RACO box?
it works perfect on hammond boxes, so i don't see why it should not work on steel too...
well, as long as you have a plane surface...
be careful when you iron it on the steel or aluminium! i screwed up my transfer because my iron was way to hot or i had it on my box for too long...now my layout has some bubbles in it and is pretty warped in some places...
i think that origins from too much heat (although the manual said "have the iron on max heat"...i guess that works for fabric, but not for metal)