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donovan6000 / M33-Fio

The ultimate OctoPrint plugin
GNU General Public License v3.0
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Printer grinding against solidified plastic when printing raft #212

Closed abbradar closed 7 years ago

abbradar commented 7 years ago

Hi,

I'm not sure if this is me giving wrong settings to the printer, me doing a bad job at calibration or a software bug. When I print a model with raft printer severely grinds against the first thick printed layer (head visibly vibrates because of this). Later it stabilizes but not without a quality impact (first layers are squashed a bit). Do you have an idea what could go wrong? I did a manual calibration of Z0s, and test border looked fine. I leave a little more space between head and bed than you describe when calibrating (paper is just a little difficult to move, not impossible). My firmware is iMe V00.00.01.23.

abbradar commented 7 years ago

Similar user report: https://www.thingiverse.com/groups/m3d-the-micro-3d-printer/topic:6479#comment-1001113

abbradar commented 7 years ago

With stock firmware V2016040401 it doesn't grind, head still vibrates but very slightly and rarely. I think that's a possible bug in iMe but I'm not sure -- can you confirm? Check on this model, with default settings (medium quality/fill) and a raft.

donovan6000 commented 7 years ago

It sounds like your Z0 position has been calibrated slightly to low. You can manually set the Z0 position by positioning the nozzle at a desired height above the center of the bed and clicking the 'Save Z as bed center Z0' button in the Calibration section of OctoPrint's Control tab.

donovan6000 commented 7 years ago

It's been a while since anyone has responded to this issue, so I'll probably close it in a couple of days. Let me know if you still have any interest in testing/fixing this issue.