Re: Milli a new composite mill kit
Peter, seems no surprise
A stiffer material in larger hollow section size will always have the advantage....
A solid section of aluminium is not optimal use of the material
5mm thick steel tube will ring like buggery and dynamic performance may be quite bad despite reasonable static stiffness.
I have a 200x200x6mm steel tube for my gantry on my router. It screams. Don't think it would be good for a mill.
7xCNC.com - CNC info for the minilathe (7x10, 7x12, 7x14, 7x16)