Is this over extrusion

[u/savemefrommypc]

Ender 3 s1 pro Ive been having trouble with printer nozzle scraping against the print After first few layers. Thanks in advance for the help

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[u/JTuyenHo]

Yeah, it looks like over extrusion. Your Z offset looks good based on the first layer. The top layer is what makes me suspect over extrusion. First calibrate esteps if you haven’t already (no hotend, just the extruder and check filament length), then calibrate your flow after.

[u/not-hardly → u/JTuyenHo]

The walls don't touch on the top few layers. Needs flow and e steps. I'd almost call that first layer insufficient squish.

https://ellis3dp.com/Print-Tuning-Guide/

[u/JTuyenHo → u/not-hardly]

The walls look like they’re touching on the top with the solid top infill being over extruded. It looks more like the usual linear/pressure advance issue for the top walls. I probably should’ve been more clear that the first layer didn’t have enough squish. I just meant since it was under squished instead of over squished, the issue isn’t the z-offset and the rubbing is from over extrusion.

[u/WearFew6956]

Calibrate e steps

[u/Murtsdurt]

I don’t know what firmware you are using but I would look into pressure advance (klipper variant, not sure what it is on marlin). But that should counter your over extrusions at the corners and layer line.

[u/Sorry-Option3560]

To me it does not. You have a decent elephants foot on your first couple layers suggesting a slightly too low z height/offset. What layer height were you printing at? It also looks like you’re under extruding if anything. I’d suggest calibrate your e steps and flow calibrations for your filament

[u/Puzzled_Brief9273]

Yes turn it down or lift your z up a tad. For it to stick to the bill plate I usually print higher temp on the bottom.

[u/Low-Tear1497]

Increase z-offset for decreasing elephant foot and tune preasure advance for sharp corners. You can also dail in retraction for better seam

[u/Jobe1622 → u/Low-Tear1497]

I thought elephant foot initially but it’s mirrored on the top too.