The cable lacing is where the hold-it-all-together should happen. This is with Spectra fishing line. Same as I used for the drive-line. Low stretch. Should keep the two halves from being pushed apart.
Installed. The idea is to balance the weight of the motor over the effector so the printer doesn’t have to sling all that weight around.
I used some self vulcanizing rubber tape to try to get some traction on the tube. It should also stiffen up the joints a bit so there is less flex at either end and more in the middle.
This is the prior iteration. The nylon kept wanting to stretch so I kept twisting the extruder around to tighten up the cable lacing. 2.5 full turns here! The nylon also dug into the plastic a bit as well.