Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5037013. For 2 and 3mm drill bits I needed a drill bit handle for enlarging small holes for something like this Retrograde Clock

Requires 2 x 3mm x 12mm hex socket head bolts (allen bolts)e 1 x 3mm x 8mm hex socket head bolts 3 x 3mm hex nuts 3 x 3mm spring washers (optional)

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