Makita RT0701 bracket for Genmitsu CNC 3020

I designed this part so I could use the Makita RT0701c as the spindle for my Genmitsu CNC 3020.  I wanted to use the original Z axis components cuz I'm cheap and this is a printed part and less than super-rigid anyway. 

Parts needed:

• Stock linear bearings and anti-backlash lead screw nut
• Stock set screws for linear bearings
• (optional) - 2x M3x16 screws for anti-backlash lead screw nut (the new bracket is thicker where the lead screw nut attaches)
• 3x - M5x35 screws, washers and lock nuts

The holes for the screws holding the lead screw nut and the bearing set screws are sized for self-tapping. If this (or any other design choice) bothers you, the .step file has been posted for your modding pleasure.

I printed this using Atomic ABS-CF because I had a lot of that left from another project. Doing it again I would probably go for max rigidity with PETG-CF (the router body gets quite hot so no PLA is recommended). Don't bother doing 100% infill, instead increase perimeters so the walls are at least 6mm thick with similar top/bottom and about 30% infill or whatever you're comfortable with.

While I had everything taken apart I swapped all the brass Anti Backlash Nuts with POM versions and stiffer springs. It's SOO much quieter now and no need for lube.

I have included the step file for anyone who wants to mod this.  Happy making!

Special thanks to Pyro Fox over on GrabCAD for the excellent model of the Genmitsu CNC 3020!!   https://grabcad.com/library/sainsmart-genmitsu-3020-pro-max-cnc-router-1

** updated files to current version with holes for screws holding the lead screw nut (I had drilled my own in my build)