MPCNC: Adding threaded hold-down holes

To easily hold stuff in place on the MPCNC, I used OpenSCAD to script it to drill a grid of 9mm holes in the bed, then I installed 1/4-20 threaded inserts into them. This lets me tighten down simple 3d-printed hold downs with normal 2″ bolts.

2016-07-24 13.13.38  2016-07-24 13.20.03

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