The upper drag chain mount took me several prototypes to figure out. This design seems to work pretty well although I may be able to improve upon it further depending on how motivated I am.
3D Rendering:
STL and STEP Files:
Drag Chain Top.zip (284.5 KB)
Printing this is pretty straight forward, PLA with no supports, I had success printing it on the long flat side closest to the camera on the lower render.
Hardware:
M5 x 30mm socket head screw The socket head screw has to be used here instead of the button head screw that is used everywhere else because there wasn’t enough room for the latter.
M5 lock nut. This fits into the nut trap that can be seen on the underside.
M4 x 8mm flathead screw to attach the drag chain to the underside of the bracket via heat set threaded inserts. These are the same screws used on the step above.
M4 heat set threaded insert to be used on the underside of the bracket