I need to find a substitute for aluminium plate which doesn't conduct electricity. Thin ply would probably be strong enough, but would prefer something a bit easier to work, and the fixing holes would be rather close to the edge for ply.
Something like a few layers of the glass fibre used for decent PCBs would be good - or sheet of that about 5mm thick.
Size needed about 3x2" so small. Load less than a kilo, but supported at one end only, so a fair twisting moment on it.
Anything I could pop along to a shed and buy?