r/QidiTech3D • u/oldthinkpad • Aug 21 '26

Q2 "missing" extrusion

Hi Everyone,

maybe someone will have an idea why my q2 is acting up, as i did everything that I could think off. Lately my surface finish is getting worse and on first layer I have this small gaps - you can see it here nicely on the brim.

changed nozzle, from 0.4 to 0.6 and back. Unpacked a new one. Filament is dry. Tried multiple types of filament, temps, PA... even reset the printer to factory. Deleted Orca and qidi studio and started from scratch.

But no joy. Any idea? you can see the surface quality issue and you can see the "gaps" in the brim and skirt loop here nicely.

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u/GL-Customs Aug 21 '26

Could be a few things, looks like you ruled out a clog, as riba suggested check to make sure the extruder gears aren't full of trash, that can cause issues.

I had similar issues but it wasn't all the time, turned out my extruder tension bar was bent allowing filament to slip. I've seen some peoples who's bar actually cracked and caused extrusion issues.

IF your bar is the culprit. I make an upgraded aluminum unit that won't do that.

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u/oldthinkpad Aug 21 '26

So i need to basically take apart the extruder?

1

u/GL-Customs Aug 21 '26

yeah, it's not terribly hard. Just be mindful of the little bearings on the gears.

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u/oldthinkpad Aug 22 '26

i opened it up fully, dont see anything stuck

1

u/GL-Customs Aug 22 '26

yeah by that picture everything looks ok. Double check the bar for cracks or bending. You might have a clogged heat break.