Three extruder calibration
thingiverse
A straightforward calibration for optimizing your three extruders' offsets is provided below. On the Y-axis, ensure that there are 10mm between the bottom edges of the first and second extrudes, with 20mm from the first to the third. Similarly, on the Z-axis, set 10mm between the left edges of the first and second extrudes, and 20mm between the first and third. Print a layer or more, pause, measure, adjust offsets as necessary, save settings, and restart printing until you achieve perfect alignment.
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