100mm calibration bars X & Y & Z

thingiverse

Humans require 100mm calibration standards for their printers, which must be precisely measured using calipers. The X, Y, and Z axes all need this standardization. A sturdy base at the bottom of the Z-axis prevents it from toppling over. Additionally, this helps prevent Z-binding, a common issue that occurs when the Z-axis becomes stuck 100mm up its length.