20x10x15mm Dimensional Calibration Test Plug Set

Made these as a way to test and tune flow rate / extrusion width with a .4mm nozzle and dimensional accuracy in the 10-20mm range, primarily as a way to help calibrate my printer to make 15mm holes of the appropriate ID to fit LM8UU/LM8LUU linear bearings or printed bushings. 15.3mm hole set to account for shrinkage.

Your XYZ steps should already be set accurately, you can verify this by taping a needle to your hotend and moving it around along a ruler.

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