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Nickel grinder
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Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Share Alike
you got 18650/21700 cells to reuse but got nickel residue on tabs?
use this grinder!
turn on, put the cells, rotate and bam! residue is gone
needs 555 motor, m3 screws, drill chuck and grinding stone attachment for dremels. + 5.5x2.1 dc barrel jack