#1 top of the list that w/ speed up assembly more than any other item:
Can get cheaper version @ walmart/etc.
Nutdrivers w/ the side sanded down for tight clearances:
I made a tray w/ protruding center table for cutting metal. Plywood tray/base approx 12"x16" with 1" side. Center pedestal approx 4" tall with 4x8 plywood on top. Design allows c-clamps to hold metal easily. “drops” or cut pieces fall into tray.
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