This is a simple, one-piece, clamp-style printable piece which will mount a direct-drive E3D V6 hotend to an existing Folgertech extruder motor assembly. I designed this after having found other solutions either requiring full carriage replacement or not tolerancing up to the existing assembly very well.

This will clamp to any NEMA 17 motor. So if you have a different printer, feel free to send me the y-axis measurement (from the face of the motor out to your extruder drive's output hole) and I will modify this part accordingly and post a copy.

As you can see from quality of the part in the photo, my old hotend was on its last legs when it printed this mount for my new E3D unit :)