Eric's Improved Z Axis Coupler

thingiverse

Revised on January 12, 2012: Added .PK2 and .STL files for 4mm stepper shafts. In *Edit Rev2*, I made certain adjustments to the columns and confirmed that the .PK2 file works correctly in Creo once more. After reprinting it, the new one appears better than the initial version I uploaded. Please share your thoughts on EricCoupler2 for the updated version. Additionally, I discovered Thing# 12190, which is quite similar; however, I created my coupler independently before seeing his. This Z-coupler was designed to address issues encountered with other couplers. It features a round shape that prevents snagging loose wires and guarantees no slippage while being sturdy. The captive nut concept was deemed the best after some experimentation. As this is my first posted Thing, feedback is greatly appreciated. I create objects using PTC Creo, an excellent software with its Elements version available for free. To assemble, print and remove the support columns. Insert a 5/16 or 8mm nut into the large slot, followed by a 3mm nut in the smaller slot and a short 3mm screw in the hole to secure the 5mm motor shaft. Place a 5/16 or 8mm nut on your Z-axis threaded rod and screw it into the captive nut from below until tight against the bottom nut, ensuring centricity with the motor shaft. Dimensions: 20mm diameter x 30mm tall.