Thingiverse
sharpener for small drill bits (ø < 4mm)
by AltWolf
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The smaller the drill bit, the higher the frustration if trying to get all angels correct
(120° shoulder and > 10° cutting edge) and _symmetrically_ by hand.
With this gadget even "GrobMotoriker" can do it.
suggested parts for mounting:
1x M5 x 15mm hexa-headed screw
1x M5 wingnut
1x M3 x 15mm screw
2x M3 x 30mm screw
3x M3 nuts (to improve grip)
2x M3 insert nuts (or M3 nuts)
2x 3ø x16mm bolts
M3 screw tap (or M3 insert tap)
(120° shoulder and > 10° cutting edge) and _symmetrically_ by hand.
With this gadget even "GrobMotoriker" can do it.
suggested parts for mounting:
1x M5 x 15mm hexa-headed screw
1x M5 wingnut
1x M3 x 15mm screw
2x M3 x 30mm screw
3x M3 nuts (to improve grip)
2x M3 insert nuts (or M3 nuts)
2x 3ø x16mm bolts
M3 screw tap (or M3 insert tap)
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