Bondtech BMG + E3D V6 carriage for BLV MGN12

thingiverse

**UPDATE 2019-12-17:** If you have a BLTouch, note that the BLTouch mount carriage I posted requires some shims to bring the sensor down far enough. I have removed that version of the carriage from this thing and created a new version: <a href="https://www.thingiverse.com/thing:4055746">Improved Bondtech BMG + E3D V6 + BLTouch carriage for BLV MGN12</a> with the BLTouch mount in the correct place, cable management holes and a much improved cooling duct. ~~**UPDATE 2019-11-10:** By request added a version with a BLTouch mount. I don't personally own a BLTouch so I went off the dimensions at <a href="https://youprintin3d.de/media/pdf/54/75/b4/f5a1c8_77037f55e5d542309d9fc178165c9f3f.pdf">https://youprintin3d.de/media/pdf/54/75/b4/f5a1c8_77037f55e5d542309d9fc178165c9f3f.pdf</a>. For this mount the X offset is -29 and the Y offset is 0.~~ **UPDATE 2019-10-26:** Added a new cooling duct with a completely different design. This duct is giving me even better results - I'm seeing almost perfect 70 degree overhangs at 0.2mm layer height, and even 80 degree overhangs are not absolutely awful. See part NewPartCoolingDuct. Also added V2 of the WireLoomAdapter - this helps keep the wires away from the extruder gear. **UPDATE 2019-18-8:** Added a new V2 version of the part cooling duct - this aims the air a few mm higher and at a shallower angle and is giving me better printing results. This is an X carriage to hold a Bondtech BMG extruder and E3D V6 hotend in a direct-drive configuration on the <a href="https://www.thingiverse.com/thing:2567757">BLV mgn12 3D Printer mod for Anet A8 / AM8 / Prusa I3 clone</a>. It includes a holder for an 18mm inductive/capacitive sensor. Also included are adapters for 1/2" ID (approximately 18mm OD) split wire loom for cable management, as well as a part cooling duct. The part cooling duct is inspired by <a href="https://www.thingiverse.com/thing:1954001">Semi-Circular Anet A8 Fan Duct</a> (although it was modeled from scratch), and the wire loom adapter on the X motor end is based on the one from <a href="https://www.thingiverse.com/thing:2567757">BLV mgn12 3D Printer mod for Anet A8 / AM8 / Prusa I3 clone</a> (although again modeled from scratch). Use ``` #define X_PROBE_OFFSET_FROM_EXTRUDER -38 #define Y_PROBE_OFFSET_FROM_EXTRUDER -24 ```