SureTite_Z-Axis_Coupler

thingiverse

The files are designed for 4mm and 5mm motors, both of which fit 5/16th threaded rods; 8mm drills also work. These components pair with steel or aluminum pieces that sandwich the printed part, secured by 6-32 screws and nuts. It's recommended to use nuts and apply a bit of locktite for extra hold. For optimal grip, use 10-24 set screws (not just regular screws). You can utilize 2 or 4 pieces per axis, with lengths of 1/4 inch and 5/16 inches respectively. Print the parts solidly with 100% infill at a slow pace for high quality results. These custom-made parts have proven effective in my setup and saved me from buying externally. To ensure precision, use the printed part as a template when drilling. Drilling may require patience, but it's worth it. For efficient hole reaming, try using a cordless drill set on reverse mode (for plastic parts), proceeding slowly with moderate pressure to achieve clean and smooth holes.