Pin Vise bok

I needed a drill bit handle for enlarging small holes like this Retrograde Clock.
UPDATE: Notes added for post-processing printed parts for better grip on pin or drill bit.
UPDATE: Now includes pin vise for 3mm drill bitsRequires
3 x 3mm x 8mm hex socket head bolts
3 x 3mm hex nutsBuy me coffee, https://paypal.me/boksbox3D PRINTING SETTINGS3 perimeters
0.5mm extrusion width
0.2mm layer height