HollowCNC - MPCNC

Hollow CNC - Mostly Printed CNC inspired by Dremel CNCIt was an attempt to improve rigidity for Dremel CNC by doing following:adding additional 12mm rods to Y axis,moving spindle as close to X axis as possible to reduce lever arm,making orifices in parts (therefore "hollow" :) ) to increase number of walls in 3d printed parts and make them more rigid.Rough list of hardware used:12mm steel rods with linear bearings for Y axis,12mm steel rods with linear bearings for X axis,12mm and 8mm steel rods with linear bearings for Z axis,4xT8 rods with rigid motor couplers,4 NEMA17 stepper motors,3 microswitches as endstops,Arduino with CNC Shield to control the motion,ATX power supply to power controller and stepper motors,spindle controlled by external power supply,acrylic or other sheet to keep dust/chips from Y rods,various M3, M5 bolts mostly screwed directly into plastic parts.Link to original onshape CAD: https://cad.onshape.com/documents/bf087bdec7e0d50a507f42bc/w/daa4ae264e70c2a4