BMG Extruder Dragon Hotend

thingiverse

I wanted a BMG with a lock for my dragon hotend, so I re-mixed one I found to add a locking interface, and created an adapter to use the 4 screw hole mount on the dragon hotend. This allows me to enjoy the benefits of the pinned heat block for "one hand" nozzle changes. You can use the PTFE insert in the adapter, but I had to clip the tab of the locking clip to get it to fit. This is designed to very tight tolerances, so you may have to do some sanding to the finished part. My printer came out close enough that a couple of times inserting and removing the adapter freed it up nicely. I used the adapter from kenrobertson as a base, and re-designed the locking interface to get rid of the tab and move to a block. I've included the .step files if anyone needs. You will need a BMG extruder parts kit (gears, pins, etc). I just ordered a TriangleLab BMG extruder and swapped them over. Use a M3 threaded insert for the tension screw hole.