i liked the design of EngScot2076 but it didn't secure the M6 Bowden connector. I redesigned a replica from scratch in Fusion 360. ISO Metric 8mm threads for the nut and screw, screw is offset -.15mm with beveled threads for easier threading; the nut has a recess and 6mm threads for the Bowden Connector. Some of the screws worked at 100% but most needed to be resized to 98% on the slicer. Printed with Elegoo CC1 and Elegoo Slicer.