Summary I needed a switch box to control an extruder fan and LED lighting. I had at home a bunch of small KCD11 SPST switches KCD11 (http://www.aliexpress.com/item/Free-Shipping-100pcs-LOT-250VAC-3A-Connectors-3-Pin-ON-OFF-Rocker-Switch-KCD11-8-5/1993568872.html), and found the nice designed box ( http://www.thingiverse.com/thing:1080129 ) by softwarebaer. Unfortunately, the switches he used for his box are larger than the ones I have, so I redesigned a new box... This box is to be mounted in the lower right corner of a CTC Bizer (Dual) made of 5,5mm wooden panels. Any other printer brand that uses the same kind of construction could also be equipped with this box. You can Tinker with the box to modify it to your needs... https://www.tinkercad.com/things/hfamkEVPUtx Print Settings Rafts: Doesn't MatterSupports: NoResolution: 0.1mmInfill: 20% to 50% Notes: I printed this with PLA, on its flat long side (with the letters upside down). So the only printing problem should be the bridging of the floors of the switches cavities... Use supports only if you must, because cleaning the cavities will be difficult...