Inductive proximity sensor holder

This is simple holder for inductive sensor and fan for auto bed leveling on Anet A6 printer.
I now have this on my printer and almost operational. A few more tweaks and I should be there. When it's done i will publish the .stl files

This is intended for an 18mm sensor: LJC18A3-H-Z/BX Approach Sensor Cylindrical Capacitive Proximity Switch NPN 6-36V

It is somewhat larger than many people use. If you need another dimensions of the 18mm sensor i can add one with the correct hole size.

In some cases keep in mind that you have to make change to the x-axis limit switch
because the sensor holder will hit the left end of the printer before the limit switch does.

22-10-16 Bed leveling on Anet A6 printer it finally works.
Firmware files https://github.com/JohnnyTheOne

05-11-16 Sensor holder NPN r4 18mm.STL Small changes at the back. a place created for hexagon nut
09-03-17 Added Sensor holder NPN r4 16mm
18-01-18 Added Sensor holder NPN r4 15mm
05-02-18 Added Sensor holder