Ender 3 to Laser Cutter Conversion: Z Axis Knob

I added a 20w Diode laser module to my Ender 3 - not as a addon, but to replace the 3d printing functrion entirely and just use it for it's XY axis's and control board! Read more here - https://hackaday.io/project/202092-old-3d-printer-to-laser-engraver-conversion 

These parts attach to the Z axis lead screw to enable adjusting the focus of the laser module when attached. The knob SHOULD screw on to the lead screw and just hang on. I didnt need to use glue - your miliage may vary however! Make sure to un plug the Z axis stepper motor too!

Check out the build video!