What I'm wanting it for is for a tilted drain board. Put the comb/frames on top of it, let it run off into a container below. Incorporate a strainer/filter in between.
I don't think the aluminum foil will work for what I want to do BUT I could cover the galvanized metal with it. Not a perfect solution, though. I wonder if the paint on the metal roofing that I have would hold up to the sustained temperatures?
BTW, I've been thinking along the lines of a solar oven (which I've built before) and recently read that you shouldn't heat the wax over 185F or discoloration may occur. I guess I don't need the melter to be *too* efficient. :-\
G3, I've thought about the flashing...I've got a roll around here somewhere, I may have to try it. I like the rigidity of the galvanized metal better, though.
What about the disposable tin roasting/baking pans? That might be an answer.