GraviTrax - Lift-Knob
thingiverse
The button on the GraviTrax Lift broke after just 3 weeks. I quickly made a new one. The measurements match the original exactly. However, I made the screw slightly stronger by 1mm. With a 0.4 mm nozzle, there were no problems. I recommend applying some Vaseline to the spring in the button so it doesn't squeak as much. The original button is made of PTE. I printed it with PLA, which is a bit harder.
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