Well I thought that I would try my hand at building a CNC router, and would like to post my current design status to see if anyone has feedback on my current machine design.

Specs:
X axis;
26" travel, 2525 rolled ball screw, 1200 ozin nema 34 stepper, direct drive stepper, 20mm guide rails

Y axis:
50" travel, 2525 rolled ball screw, 1700 ozin nema 34 stepper, direct drive stepper, 20mm guide rails

Z axis:
sourced z axis assembly 5 to 8 inches of travel.

All axis driven by Gecko G203V drivers using Mach3.

Welded steel 11ga 2.5" sq tube base (depicted in blue image below). Approximately 400lbs.



Machine table (depicted in blue in below image) comprised of 1.5"x3" 80/20 Al with 11ga galvaneal steel skin. Table assembly is entirely bolted and weighs approx 350 lbs. Transparent picture below as well.

Gantry is built of 1" thick 6061 plate for the vertical members with 1.5" x 3" 80/20 cross members. The bottom "drive" cross member is 1.5" x 4.5" 80/20. Approx gantry weight is 150 lbs with a Velox 5" z axis and PC892 router.


Let me know if you have any feedback, design concerns or questions.

I am very open to constructive criticism.

Thanks,
Dave