Any ideas what is causing this irregular extrusion along the X-axis? Y-axis looks just fine. [IMG_3650]

Is there any play with the head and the bracket on the rail?

No, everything is tight. Could it be bad linear module perhaps?

@snapUser I’ve never seen this happen before, but others may have. I’m going to wait for a few others that I sent a DM to, to come check this out and see what they think instead of guessing. I have an idea what it might be but don’t want to needlessly cause confusion. Is the rail making any noise? …

Everything sounds fine (nothing strange, grinding, etc). Travels full width of the bed. I would add, this only seems appears on first layer. I was thinking it was first layer (over) extrusion setting, but it doesn’t happen on the Y-axis.

[image] snapUser: I would add, this only seems appears on first layer. Have you tried increasing the Z Offset? Even the lines that look semi-normal, are too close. It looks like the nozzle is ~0.10-0.15mm too close to the build surface.

First layer? maybe its just needing to be primed more? run a big ol’ skirt

So I re-did the calibration (7x7) and cleaned the heck out of the build plate with 99.9% IPA, and I’m getting much better results now. Although there still seems to be one area (lower left ) of the build surface that adhesion is an issue. Using another build plate, same issue. So I’m not sure if …

Do you have the latest version of the firmware installed ( 1.13.1 - July 21, 2021 )? If not, that should address your adhesion/leveling issues, as there is a mess leveling bug in all firmware prior to 1.12.2. Be aware that the firmware also has WiFi fixes that may require you to perform a full facto…

No, I’m risk adverse and will hold off on the latest firmware for a while yet (still on V1.12.1). I guess I could try V1.12.2

The bed does warp when it gets warm, did you calibrate it room temperature? i usually preheat the bed to temp or maybe 5 degrees above temp and let it sit for a bit before calibrating. it makes a big difference when it comes to adhesion issues, because the bed sits differently when its at different…

Irregular extrusion

Snapmaker 2.0 (3-in-1)

snapUser August 29, 2021, 6:27pm 12

Bed was preheated during calibration, using this procedure…

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Irregular extrusion

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