sintron-x-axis-endstop

I like the endstop holder made by patrick204 but I wanted to position mine on the back left of my printer so I changed it a bit. I made the slot for the board 1.5mm, rather than 2.0mm for a tighter fit and I recessed a bit for the connector.

latest version updated to be a bit thinner behind the pcb so the part does not bind when the z-axis is at the top