Thing-O-Matic Z-axis rod stabilizers

thingiverse

Initially, when I incorporated barrychuck's Z-stage mode (http://www.thingiverse.com/thing:6184) into my TOM build, the Z-axis platform demonstrated remarkable stability. However, upon testing the stepper, it was unable to bring the platform to its full extent due to rod binding. The issue stemmed from the holes needing expansion on one side to allow proper rod positioning. This led to an over 0.5mm movement in the Z-axis, exceeding printer resolution and causing audible noise owing to platform shake. To rectify this, I installed brackets internally at each end, followed by adjusting the enlarged holes on the other side's laser-cut holes, using a custom-printed set for optimal fit with 135mm tubes and maximum travel. Installing the lower stabilizer required removing the bottom part, replacing the top rod cover, and pulling out the Z-axis rod. Test fitting the stabilizers on the rod was necessary before pressing the upper stabilizer's flat base towards the plywood, ensuring proper positioning. The lower stabilizers were installed with the flat side facing the acrylic plate, pointing towards the front to avoid Y-axis stepper interference and wire hole coverage. Finally, upon complete installation, the Z-axis was verified for smooth movement across its entire range.