Tevo Tarantula Z nut holder with cable hook

thingiverse

My printer setup has a mainboard located behind the printer, forcing me to route extruder cables over the X axis. I decided to upgrade the Z axis motor holder during this process, which led me to change the Z nut holder and add features not found elsewhere. This custom part includes four fixing points on the aluminum extrusion for added stability and security compared to the original acrylic piece. It also features a bracket that holds all cables going to the extruder, limiting cable movement only when the X axis moves and reducing stress on the fan and heater. Additional hardware needed: * 6 M4 screws, measuring between 10 and 12mm in length * 6 slim T-nuts for M4 screws * The Z nut and all associated screws and nuts from the original acrylic mount Assembly instructions: 1. Disassemble the entire Z nut assembly by removing the motor, the Z screw from the motor, the Z nut from the screw, and the acrylic bracket. 2. Support the X axis with an object to create clearance for a screwdriver, such as a tissue box. 3. Assemble the new Z nut holder according to the first picture, leaving all T-nuts loose. 4. Align the four T-nuts vertically and slide the assembly onto the aluminum extrusion, eyeballing alignment with the motor holder at this stage. 5. Pass the Z screw through the motor mount and into the Z nut assembly, using it to align everything with the center of the motor mount. 6. Once aligned, tighten all four screws holding the assembly to the aluminum extrusion, ensuring T-nuts rotate and lock into place in the process. 7. Tighten the Z screw enough to secure the coupler within the motor mount for better support, then attach the motor to the coupler. 8. Secure the motor by tightening the Z screw until it is flat with the motor mount, followed by securing the motor in place after verifying correct alignment of the Z screw. 9. Open the cable hook and insert the extruder cables into it, securing it tightly to prevent excessive pull on the hotend and fans during X carriage movement. 10. (Optional) Apply fresh oil to the Z screw for lubrication, as reassembly may have removed significant amounts. I prefer not to use PLA for this critical part due to its limited strength; instead, I printed PETG for added durability. ABS could also work well if you have a setup that allows for solid printing. Nylon might be overkill but is another option.