MakerGear M2 Z Axis Knob - Spiral

thingiverse

I designed a replacement z axis knob inspired by Mrclean6's Makergear m2 model. To create it, I utilized a long set screw from ACE, which I inserted into the steel lock collar of the original M2 knob. The length of this set screw prevents the collar from moving inside the knob, as can be seen in the photo at the lower left corner. To design the spirals for this project, I employed elegant Open SCAD for loops. Unfortunately, this resulted in a very complex model containing approximately one billion spheres. Consequently, the STL file generated by this design is extremely large and requires significant rendering time when processed with Open SCAD. Given its complexity level, Open SCAD struggled to render the design properly. To resolve this issue, I utilized a spare server to render the STL file, which took around 26 hours and consumed multiple gigs of memory. Despite these challenges, the design was successfully rendered into a 261MB STL file that can be found in the attached zip. You are free to modify the Open SCAD source code contained within the zip or import the large STL file directly into your slicer for further processing.