LPKF Spindle Knob
by garyacrowellsr, published
This is not a thing that anyone else is likely to need. I'm putting it up here just as one of the examples of the utility of 3D printing for specialized objects.
This object replaces the spindle knob on our LPKF printed circuit board cutter. The original knob is small and difficult to grip. It's used to tighten the spindle collet holding the milling and drill bits. If it's not tightened fully, the bit can fall out, destroying the board being milled, and very possibly damaging the machine (has happened to the tune of several $K).
This replacement knob just clamps over the existing odd-shaped knob.
Both halves are identical. A couple of M3 screws clamps it together.
The .scad file is included, but this was just intended as a one-off, so don't expect a model of programming.
(yes, it looks like a cupcake, but the shape works...)