Purchased a used (I know.. buyer beware) Sovol Zero. It would stop extruding 2-3 hours after a print was started, figured it was a extruder/hot end issue and was able to purchase a new assembly. Problem still occurs in the same time frame (2-3 hours into a print). Both the old and the new hot end wo…

The only thing I can come up with that makes any sense is tangled filament on the spool. [image] amoeba: had an x-axis drift to the right This is probably unrelated to the under extrusion.

It sounds like heatcreep, but the new hotend would have fixed that. What filament are you printing with..?? Do you print with the door open or the top removed..??

Been using PLA (currently loaded with Factory Filament Pro PLA+). Yes, door open and top off. With the new hot end, it is jamming in the PTFE tube between the extruder and hot end. I have been able to remove the hot end and open the extruder to clear the jams. I does not appear to be heat creep as i…

What errors show in Fluidd/Mainsail from your PC?

I will have to check but I don’t recall seeing any. Job reported finished this morning, but had stopped extruding mid-way. EDIT: It also will not unload after, I imagine it is because the filament has been chewed up and can’t be retracted. I will verify once I get home tonight.

Does the jamed filament look to have been melted then pulled back into the PTFE tube?? Are you reusing the same g-code file? Verify your filament profile doesn’t have an unusually high retraction setting. Reslice and try again.

Read this: [image] Sovol Zero – under-extrusion caused by worn extruder gear (Solution update - loose pin)? Need advice on replacement Sovol Zero Hi everyone, My Sovol Zero recently started printing very inconsistently. I’m getting clear under-extrusion — lay…

When I cleared it yesterday evening, there was no melting in the PTFE tube. I did not have time this morning to check (ugh, day job…). I re-slice after a fail and check the settings, I think Orca is using the Sovol PLA profile, but I will check and see what the retraction settings are.

Old hot end did not look worn (guy said he only used it for about 500 hours). New hot end also did not show signs of wear. I will take pics of both and post them.

[originalhotend] Original hot end extruder gears [filament] Filament from new hot end/extruder [newhotend] New hot end extruder. Filament does not look like it was retracting too far. Orca has the retraction set to 0.8 mm.

Also looked at the logs, unfortunately the power fluctuated and the logs were wiped today. I will run a long print and see if an error occurs.

Extruder stops working mid-print

Sovol Zero

Lion July 6, 2026, 5:17pm 7

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Sovol Zero – under-extrusion caused by worn extruder gear (Solution update - loose pin)? Need advice on replacement Sovol Zero extruder-kit , advice	7	391	July 15, 2026
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Extruder stops working mid-print

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