CNC3018 CNC2418 engraver clamp bolt holder

This is to stop the 8mm bolt head spinning in the T slot of the work surface if you bought a version with the clamps. 7.4mm hole and 14mm across flats (nut_holder.stl)
Makes it a lot easier to use the wing nuts.
Added a 6mm version upon request, 5.6mm hole and 10mm across flats (nut_holder_6mm_10mmAF.stl)

rsdoc file is for designspark mechanical if you want to modify it.

Just to clarify, no loss in clamping performance, the bolt head still contacts the T slot directly, the plastic just s