Hey all, I've been semi-conscripted to design/build set for a show going into one of my cities more proffesional theatres. One of the pieces is a flat which must resemble a tree on one side and house on the other. The design brief insists that they be light enough for one person to lift and turn in a few seconds but be 2.5-3 metres tall. Due to their irregular shape I think we're going with plywood surfaces but to keep the weight down im considering making aluminium frames. This is a slightly more exspensive option but after lifting the approximate weight of a timber frame yesterday I think it has to be done this way. The problem is that ive never used alumininum before. Don't know its stength capabilities etc etc. and don't really have the luxury of stuffing up to many times. Any advice on this type of construction would be greatly appreciated or even any other tips for keeping the weight down.