[benhobby]

I designed a small machine to mill aluminum and steel, and I designed it to be as cheap as possible. T8 leadscrews, SBR12 fully supported linear rods, nema17 steppers. I know it sounds WAY underbuilt for steel, but hear me out. The T8s are using compression anti-backlash nuts, and are SUPER solid. The rails are decent quality, not too long, and fully supported in steel bars cast into concrete. Each of the x and y axes has two nema 17s geared down. If thats not enough power I have provisions in place for two more per axis. I have a 1.25Kw spindle motor (RC car brushless motor) geared for a max RPM of 15K. Both the base and the X axis are going to be cast out of fiber reinforced concrete. I have attached a rendering below. Missing from the rendering are the leadscrew mechanisms, and the spindle and motor. Please give advice, this is my first CNC but not my first machine of this complexity.