Railcore II 300ZL(T) Z-axis drag chain

thingiverse

Z-axis mounts for UXcell R18 10x20 drag chain https://www.amazon.com/gp/product/B01M0WRJ35. To mount the bed wires and thermistors this way, you'll need to have flipped your aluminum z-yokes (described elsewhere) and tapped at least one of the free holes on the side yoke (they tap easily with an M3). If you don't want to tap that hole, you can also just use an M2.5 and a washer. In order to get full travel range, I also needed to relocate the SSR because the bed wires were just barely too short. On a 300ZL, you are fine not moving the SSR as long as you are ok losing ~10-20mm total z-travel. I'd recommend PETG for the bed side mount. It doesn't get that hot on the yoke, but it is still in close proximity and PLA may start to warp. The wall side can be either PLA or PETG. Depending on your printer some minor supports may be necessary when printing the wall side. Supports are definitely necessary to print the bed side adapter. I've been using this for a few months, and haven't had any issues with the bed side attachment warping, and it has been nice to be sure the z-wires won't snag on anything.