Stiffness is king!
My bet is that you'll have a hard time cutting aluminum with a 3mm cutter. And PCB cutting will be a pain because motor/spindle vibrations will kill the cutters. With that type of design, I would doubt that 50mm diameter rails would be stiff enough.
My next PCB mill will weigh 100-150kg for that reason. All ways will be supported.
For alu, I use my 1.2 ton Deckel FP2NC. Even that one can bend - it it is fairly stiff though.
/Torleif. |