Hi, I have some empty desk space so I'm thinking of putting my pc components on it instead of using a case.
I'm thinking of wrapping stacks of 5 pennies in electrical tape to use as standoffs for the motherboard, which I'll tape on the bottom where the screw holes are. Then I will place the mobo with electrical tape standoffs on top of a wooden table.
I know copper is conductive but will the black electrical tape be enough to prevent any shorting?
Pennies are pretty useless and I thought it would be a good opportunity to put them to use.
I wouldn't recommend doing that. You are better off leaving the stand-offs connected to the mobo than putting copper pennies (although wrapped in electrical tape) under your mobo. You are also asking for more problems by leaving your mobo exposed to the elements (liquids/more dust/etc.). Why do you want to do this?