Base plate of 1.8 mm thick plywood, here is where I will be mounting everything on

This is a test

Column attachment to the baseplate

Drilled and countersunk underside

Overkill? I think not! Normally I am a big (big!!) fan of Torx drive screws, and I have a lot of Torx head screws in storage, about 1700, but I didn’t buy thick and long ones. I had to use 5x80 mm Philips head screws instead…