For manual operation, with carbide sharpening knife.
For sharpening paper drills from 3.0 to 20.0 mm Ø.
1 hand crank for drills from 3.0 - 8.5 mm Ø (shank Ø 11 mm)
1 hand crank for drills from 9.0 - 14.5 mm Ø (shank Ø 16 mm)
1 hand crank for drills from 15.0 - 20.0 mm Ø (shank Ø 24 mm)
A guide sleeve is required for each diameter to clamp the drill. This guide sleeve precisely centres the drill bit clamped in the crank handle and clamping sleeve.
The cutting edge of the clamped paper drill is sharpened by turning the hand crank with a Widia sharpening knife.
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