About this 3D model
I added a switch inside my MPX 4000 aluminum stick transmitter, thanks to the cap shape i designed, no glue needed, just press fit, and obviously you need to file to adapt the sub mini toggle switch and to solder wires that goes inside the hollow stick. This mod cost less than 3$ (using a surplus sub mini switch, 20 cm of wires and a 3 pin connector to suit spare )