Knurled knob

thingiverse

Knurled knob. 22mm dameter for 3mm hex bolt, 5.4mm A/F 15mm height. hence the file name:- 22-3-15 You will need a 3mm hex bolt, of appropriate length, or... stick a nut in it. The 3mm hole is tight, the bolt may require some effort to push it through. Not quite the "diamond" pattern you get with lathe knurling, but close enough at present. EDIT:- 16/12/19 - 4, 5 + 6mm hex bolt versions added.