Quote Originally Posted by firetrappe View Post
With a more conventional steel or ali machine, I intend to remove the worksurface to make room for it. Depending on whether the machine is suitable for bench mounting or has it's own frame, is it sufficient mount it directly onto the wooden floor that is currently there (supported underneath), or would I be better off putting holes in the floor so that it stands on the slabs underneath the shed and is isolated?
Well depends really on machine size and weight. Most decent sized steel machines are quite heavy so it's a good idea to mount to something sturdy.
The bigger problem with mounting on Shed floor comes from inertia shacking machine and the shed so needs bolting down to floor directly.
Same goes with a Bench mounted machine, the Bench needs to be substantial and fastened to shed walls along with machine bolted to it.

It's good fun watching a machine on full tilt walk around workshop. .