Hi,
Can anyone point me to what is causing this issue?
I’ve never had this issue before and it’s happening on the same spot even on different types of filament PLA and PETG.
My filaments were dried and still having the same issue.
Check nozzle to see if it’s bent.
You might need model supports, bad overhangs could cause that
I put in the replacement nozzle same thing.
I’ve also calibrated my filament.
Not sure what to do anymore.
It looks like your PA calibration is way off.
And/or you are pushing flow too much. A slicer preview would show if that is in a flow controlled region.
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Run the print at “Silent” speed (slowest) and see if that makes a difference.
This looks like a flow issue, but if you’ve run calibrations on multiple filaments and gotten basically the exact same results, unless you’re making the same mistake each time you calibrate (and maybe not even then) I don’t see it as a plausible explanation.
And the rest of the print looks pretty good/clean. So it’s probably not a flow issue.
Same logic applies to temperature.
What are the flow and PA and temperature settings for this last print? What filament type?
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What are your support settings? It looks like it is generating supports out beyond the model. You most likely do not need to change any of the individual values. Just enable supports and leave all the default settings as is. The base of the supports will be beyond the model but some of the very outer supports seem like they should not even be there.
Can you post a link to model?
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Many thanks for these. It does help, but there are still many possible root causes that spring to mind.
While the error pic’s suggest a flow or PA issue, the slicer previews do not back up the flow limit root cause as areas with a higher flow above the error region do not show the defect.
So it is quite a bit more complex. And, unfortunately, neccesitates a few more questions:
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Is the error side facing the Aux-fan (if you have one)? Or the front left corner or the poop chute and quite close? Drafts can also cause these types of defects but can usually be influenced by re-positioning on the build plate or other means (reduce Aux-fan, etc.). I regard this as unlikely though as errors would have varied between PLA and PETG.
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In which direction is the print head moving in the error region? Is it in this direction? If yes, PA could still be a reason, but probably not the only one (see below).
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I agree that more supports than neccessary are generated. It may be worth enabling “remove small overhangs” in the support settings. But again, that is probably not the (only) root cause. Best to stick to the defaults for now.
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What is noticeable from the layer time preview is that we have increased layer times for the defective layers. It would be good to better understand what is happening here using the 3mf. It may be related to time taken for further geometric features hidden in the pics or from the “slow down for overhangs”.
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Speaking of “slow down for overhangs”: Do you get the same defects if you set all overhang speeds to 50mm/s using PLA? That was successful in a recent, similar troubleshooting. It can only help if the tool head movement is in the direction I indicated above though.
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It is always a good idea to troubleshoot at reduced speeds. Not only because it removes important root causes, but also because it is easier to observe and listen. I did have issues in the past with “slow down for overhangs” where the fan’s were coupled in the filament settings… but taking some time to speed up, thereby over-cooling in the wrong positions. There’s now an option to add that in the filament settings (but 0s by default).
There’s still more, but I think once we go there, we really need the 3mf. And best to stick to well dried and calibrated (also Pressure Advance!) PLA for now. All that curling/warping related stuff with PETG is something to be dealt with once the print works in PLA.
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Run a full printer calibration