Chuck lock for Biltema drill
thingiverse
On this cheap power drill, the band one holds to counter the motion when locking/unlocking the chuck onto the drillbit. Vitamins needed: 2x M4 screws, 2x M4 hex nuts (locknuts preferred) Print one of each part (bottom + top). Parametric model in FreeCAD included. Can be easily adapter to lock/clamping for other circular objects.
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