Summary Bought a BLTouch ABL sensor for my MM3. Couldn't find a mount for it so I threw one together in Sketchup. Here it is. Sketchup file included in case you want to improve on the design. When finished it mounts to the rear of the X-carriage as shown in the photo. Print Settings Printer Brand: RepRap Printer: MendelMax 3.0 Rafts: No Supports: Yes Resolution: 0.3 Infill: 40%