Parametric conduit/rod mounting clamp (for MPCNC)

This is a conduit clamp for mounting different extensions to my MPCNC (25mm IE version).

The OpenSCAD source file can be used to generate mounting clamps for this
- cover: http://www.thingiverse.com/thing:1183975
- laser driver: https://jtechphotonics.com/?product=2-5-amp-adjustable-laser-diode-driver-kit-for-uv-blue-diodes-8v-compliance-international-style-plugs
- reset switch: https://jtechphotonics.com/?product=remote-reset-switch
- display box: http://www.thingiverse.com/thing:861091