Mild steel box section pricing

[reefy86]

Sands ok but only to a point, depends on what you want the machine for.? If you're wanting to cut steel then your probably building the wrong machine with the wrong materials.?
If it's for cutting wood and light aluminium work then I wouldn't waste your time and mess it makes, just use thicker material with plenty of bracing.

Just wood/acrylic and aluminium but not sure what I could achieve when it comes to aluminum (20mm would be good)

3d detailed carving is a must and that's where I was thinking sand would be needed?