Railcore Minimal Offset Adjustable BLTouch Mount

This is a BLTouch version 3 sensor mount for a Railcore II 3D printer. For an E3D V6 hot end, the mount produces probe offset values of X0 Y28.5 Z2.5, which is about as close as you can get the probe to the hot end. It has the advantage that the X offset is zero, because the probe is directly behind the nozzle. Z offset will vary depending on nozzle and probe standoff hardware. The mount has a hole to insert a hex wrench so the probe can be adjusted without unmounting it.

The mount must be attached to the carriage first, because you need to use the long hole to get the hex wrench to the screw head. This was necessary to get the sensor bar at the right height, and also to get it as close as possible to the nozzle without the extruder interfering with access to the adjustment hole. Once attached, you mount the sensor. It should need minimal or no shimming for optimal positioning, which has the advantage of being more rigid than long screws with spacers..