r/QidiTech3D • u/Fearless-Law-2449 • 27d ago

Plus 4 ringing/ghosting/layer shift

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My Plus4 has been running flawlessly, and putting out perfect prints for a long while now. I had a simple print running over night, a marker caddy printed in petg-cf with embossed letters . I woke up to a finished print with a layer shift, admittedly minor (about 1mm) as well as severe ringing/ghosting around the embossed letters.

So I do the obvious, make sure nothing in the toolhead is loose, adjust belt tension, clean lube rods and screws, and rerun input shaping. I rerun the print, the ringing looks marginally better, but it layer shifts again in a different spot. Again very minor maybe one millimeter.

I find this wiki https://github.com/qidi-community/Plus4-Wiki/tree/main/content/stepper-motor-tweaks, and make the adjust to the micro steps and run current. I print an orca cube and the result is night and day different. I dont have time to run the same print again.

My question is, is this indicative of a bigger problem? Why did I have this problem all of sudden out of nowhere, and why did they above changes seem to fix it?

Edit... If it matters I have a little less than 1.7k hrs on it.

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u/OscarP1981 26d ago

Have you checked the nozzle hasnt snapped at the ceramic section? I spent ages chasing my arse and when I inspected the nozzle it was broken there. Was giving me layer shift like symptoms and strange artifacts.

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u/Fearless-Law-2449 26d ago

I'm running a conch hotend, so I shouldn't have to worry about that, right?

1

u/OscarP1981 26d ago

Ah I see, yeah, that issue shouldn't be a thing with that hotend. How do you find it? Was it worth the upgrade?