Z printing short
Newbie to 3d printing in general, acquired this printer:
So I rebuilt my hot-end after getting a lot of ugly prints (poor cooling above the heat-break) and after reassemblying and running through the calibration wizard my prints are correct dimensionally in X and Y, but Z is 0.95% of the model height.
I also found I needed to scale the flow to keep it from over-extruding, probably because the printer thinks the layer height is something larger than its actually moving. Tried running through the calibration again, same result. Was not an issue before the rebuild, and since I didn't touch anything other than the extruder I'm assuming this is some calibration thing. Prints were correctly dimensioned prior.
Is this a thing I have control over? How do I correct it?
RE: Z printing short
In case anyone else runs in to this: I re-ran the full calibration wizard twice before it just decided to come up 'right.'
For Prusa: if, by chance, you're calibrating a Z scaling based on some measurement between the top of the axis and the bed: this is a ridiculous CNC no-no, and your Z scale should absolutely be a calculation of motor steps per rev and lead screw pitch. Hopefully that's not the case though, and I just had some crazy software glitch. If it is though I'm happy to lay out the reasons why in detail.