create, or replace, knob adjustment using a bolt or a nut. Same as Thumb Screw
UPDATE:
Last version is capable of adjusting arch and edge smoothness
BoltHandle-M6-2.stl | 51.9KB | |
BoltHandle-M8-2.stl | 70.0KB | |
BoltHandle.scad | 1.4KB | |
BoltHandle.stl | 72.9KB |