Proximity Switch holder for a REK hot end

This is a Proximity switch holder that I designed after purchasing a Rek-Max3D Comet Hot End off of Ebay. The hot end is designed with a narrow cross section as you can see and it allows the proximity switch to be closer. This reduces the printer head radius. The proximity switch it is designed for is a DC 6-36V NPN NO 3-wire 4mm Non-contact Inductive Proximity Sensor Switch LJ12A3-4-Z/BX. The wire up on my Ramps 1.4 is quite simple. I use the two power wires to the main 12 volt source and