#Artifacts? Too much jerk?

32 messages · Page 1 of 1 (latest)

timber mauve
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Unsure exactly problem. Print quality is not great. Flow, pressure advance first layers all good. Height shows wavey layers and artifacts. See picture. Any suggestions?

IMG_5427.jpg
versed bridgeBOT
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fading beacon
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What slicer ? Settings ? Printer ?

timber mauve
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Sorry yeah: slicer OrcaSlicer, settings are stock, just included pressure advance via the line test. Printer is Vcore 4 400.

mystic idol
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I think it is usually recommended to leave jerk at 5. Did you change it? There are big vibrations on your walls, so it could be related. Did you try printing a slowed down one?

timber mauve
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Have not changed jerk. Slower prints come a little cleaner. Honestly gonna check all the fasteners on the tool head to make sure something didn’t somehow shake loose.

mystic idol
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How much cleaner? Can you print one at 50mm/s

timber mauve
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Significantly cleaner but not perfect.

IMG_5435.jpg
timber mauve
mystic idol
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still not an amazing picture, try more light and also take 1 with zoom and 1 without, that gets good results

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well it looks better

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so motion is involved

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some VFAs

mystic idol
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looks like speed acceleration, something like that

timber mauve
timber mauve
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Thanks for helping with this.

mystic idol
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No worries

fading beacon
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These are the settings from Ratrig defaults for VC4 300 Hybrid they profide for Prusa Slicer.

Bildschirmfoto_2025-08-10_um_19.13.23.png Bildschirmfoto_2025-08-10_um_19.13.57.png
mystic idol
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Those accelerations, are pretty fast.

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Yeah, run input shaper.

timber mauve
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V-Core 4 400 hybrid

timber mauve
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Used SHAPER_CALIBRATE and saved that to hopefully avoid isolate these freqs

timber mauve
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Getting this without reducing speed now.

IMG_5444.jpg
mystic idol
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Hmm, I am not familiar with saving input shaper results, because you usally have to pick what shaper to use. Did you follow the guide?

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(I usually manually put the values into printer.cfg, but maybe there is a new feature?

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This looks a lot better. The overhangs are an area to experiment on. If you dial in those overhangs your prints will be good for 95% of stuff.

timber mauve
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Yeah RatOS has changed a bit. There’s a line in the text in printer.cfg that says to either input manually or run that command. Sucks that it’s not in the calibration docs anymore. You have to read a few different things to get all the cal and other fine tuning prompts and commands in.

timber mauve