Color pencil unsharpener with replaceable blade
thingiverse
The improved design of color pencil unsharpener (free download to save our planet) 1) Features a lock nut for easy tool-free blade replacement. 2) Uses a piece of snap-off 9mm 30° replaceable cutter blade. 3) Minimizes color core waste peeling only wooden part of the pencil (an ordinary sharpener wastes 50-80%). Almost 100% of color core goes to painting. Pencil lasts more than 2x longer compared to conventional sharpener. 4) Saves materials, natural resources and money. 5) Safer, less exposed sharp blade
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