Bowden coupling for Geeetech A10/A10M

thingiverse

There are several remixes of the original work, but most are designed for metric threads, which won't fit Geeetech A10M's 1/8" thread. If attached directly to the feeder, they will come loose whenever a tube is detached due to identical rotational forces. I've created this remix using the original metal coupler that holds the base in place. Everything remains securely attached without any glue. Note how the base fits snugly into the indent on the feeder, preventing it from rotating. To install, first remove the plastic insert from the original coupler entirely. Next, attach the 3D-printed "base" and screw in the metal coupler body using a small wrench. This will securely fasten the base to the feeder, allowing you to add the remaining parts. **UPDATE**: After prolonged use of this coupler, I've discovered a couple of issues. First, if the nut doesn't tightly compress the tube, it may slip out, ruining the print. On the other hand, over-tightening the nut will cause a depression to form on the tube over time, reducing its internal diameter and increasing resistance as filament moves through it. This will lead to gradual stringing and underextrusion problems, potentially causing the coupler lips to snap or worsen underextrusion until you identify the issue. Cutting off one centimeter of the bowden tube temporarily resolves these issues for a few weeks before they recur.