> (I dread to think what an aluminium plate with an irregular shape and some cut-outs might cost if one ordered it at a regular metal-working shop.) Coming fro

> (I dread to think what an aluminium plate with an irregular shape and some cut-outs might cost if one ordered it at a regular metal-working shop.) Coming from the other side of this fence, I dread to think what alloy an electronics supplier would end up sending me instead of the metal that I asked for, and what surprises that might bring me structurally/chemically.