Delta Calibration, does it effect dimention/squarness/scale?
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I have 4 Deltas with FSR pads for calibration (Ultibots D300VS).
Two of my 4 printers are no longer printing square enough, so one aspect of troubleshooting I'm trying to narrow down is this:
If your print bed is aggressively textured (peaks and valleys maybe around 1mm in difference) but averages out flat, and also prints acceptably flat after calibrating on it.
But could calibrating in such a manner cause the X/Y dimensions to be out of square?
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@Ottobawt the calibration process assumes that the bed is flat, the towers are parallel to each other, and the Z probe has the same trigger height at all point. If one of these conditions is not satisfied then calibration may indeed result in not printing to scale and square, especially if you use 8- or 9-factor calibration.
If the bed is aggressively textured, then using a large number of calibration point will help because it will tend to average out the lack of bed flatness.
Alternatively you could put a flat glass plate on top of the bed, run calibration, then remove the plate and adjust the calibrated homed height by the thickness of the plate.
