I’m printing using the filament that came with the printer and the default settings in SnapMaker Orca. Print quality is generally very good, but I’ve noticed that when I print relatively thin flat designs (around 5mm thick) the top surface blisters up slightly over the cells of the infill. This is v…

Just to give closure on this, after a lot of tests support were eventually able to reproduce my problem. Turns out it is a problem with the Snapmaker Orca 0.08 Extra Fine @ Snapmaker U1 (0.4 nozzle) profile (the default profile). They changed: Sparse Infill Pattern to Gyroid and Internal Solid Infil…

Please have a look here, it’s the same topic. Share pictures if it’s a different issue, please. [image] Extruder nozzle grinding into prints U1 Troubleshooting guides It doesn’t happen all the time, but it happens often enough to make me reconsider buying this…

My Original does that if I make the infill fairly sparse. Increasing the infill usually makes it go away. You could also try making the top thicker. More layers allows the print head to even out any unevenness.

It would help to see the slicer settings. At what layer height and how many top layers?

More top layers does help with the final appearance, but it also means there is more grinding of the nozzle against the domed surface of the previous layers. Over-extrusion is the best theory I’ve seen so far and I’ll try some experiments with that. I’ll also try a denser infill pattern, but that is…

My model is basically a rectangle extruded upward by 5mm and I am using the default slicer settings with no modifications, ‘0.08 Extra Fine @Snapmaker U1 (0.4 nozzle)’ profile.

This uses 9 top layers (0.72mm thick). I might recommend 12 top layers to get it closer to 1mm. To me, 9 would be the bare minimum but could still show some texture from covering the infill up depending how good the overhang extrusion and cooling are. Those super thin infill overhangs aren’t easy.

[image] Extruder nozzle grinding into prints U1 Troubleshooting guides I checked with our print-process guys and combined other tips from the thread—what you’re seeing looks like Pillowing defect. The core idea is to use the process of elimination: [img_v3_02…

Thanks Simon. The defect does look very much like this picture, but a bit less pronounced and more localised. However I’m still using the filament that came with the printer and it has been indoor at constant room temperature and humidity since the pack was unsealed less than a month ago. The bottom…

If you’re using PLA, don’t fully seal the top cover—keep it half-open in winter and fully open in summer; otherwise the ambient temp can get too high and hurt PLA quality. For the issue you described, use elimination: change just one variable and compare. For example, in a half-open enclosure, prin…

I’ve done some test prints using a 50x25x5mm box with 3mm filleted corners (please rotate the picture in your head, I cannot figure out how to do it in this editor!): [IMG_0042] This is actually five separate runs (1 and 2 are displaced towards the rear of the original print position, 3,4 and 5 a…

Domeing of flat surfaces over infill cells

U1 Toolchanger U1 Troubleshooting guides

xchrisd January 14, 2026, 7:41pm 2

Please have a look here, it’s the same topic.
Share pictures if it’s a different issue, please.

Topic		Replies	Views
Extruder nozzle grinding into prints U1 Troubleshooting guides	104	1732	March 11, 2026
Surface imperfections Snapmaker 2.0 (3-in-1)	5	469	September 29, 2022
Bad layer over infill structure Artisan (3-in-1)	14	423	May 5, 2024
Surface of the 1. layer like sand-paper. A350 Snapmaker 2.0 (3-in-1)	6	1510	December 15, 2020
3D printing gone crazy Snapmaker 2.0 (3-in-1)	36	615	January 4, 2025

Domeing of flat surfaces over infill cells

Related topics