Z-axis compression is just a short way of describing the symptom of the modeling being squished in the Z dimension somehow.
There can be several different causes.
What I recall seeing described thus far is:
- the Z dimension being too large or too small from the model size due to a mismatch between CW slicing height and the host software’s layer height
- the XY dimension being off (due to XY not being calibrated), resulting in the part looking like it’s too short or too tall, but in reality it’s due to the XY being too wide or too narrow.
Measuring the part would differentiate these two cases.
I think there may have been one oddball case where there may have been Z rounding issues due to a layer height setting that exceeded the resolution of the Z-axis linear stage. The spec sheet for the Titan 1 indicates a maximum Z resolution of 5 microns, which is .005mm. Thus while .075 should be within the resolution limit, settings where the 3rd digit is not a multiple of 5 will exceed the limit. (E.g. .072 is bad, .070 is fine, .087 is bad, .085 is fine).
