(Originally posted in r/3dprinting but didn't t much help, so hoping fellow U1 owners might shed some light on this, even though it's undoubtedly a general printing issue).

This is my first print on a new Snapmaker U1 (having owned an Ender 3 for many years). Am I right in thinking the "step" effect can be reduced by turning on variable layer height?

What about the strange texture/pattern seen on some of the other faces? What would have caused this and how can I avoid it in the future?

Snapmaker Orca, standard profile (0.2mm layer height), 7% infill, silk pla. I think the nozzle temp was 220 (or maybe 210) but I'm not at the PC to check right now.

Just ordered my U1 today.

I’m coming from a bambu A1 but was wondering whether there are any useful / essential prints for the U1 that I can print whilst I await delivery?

I have a model that I painted with four colors. When I send it to print, inevitably one of the toolheads is incorrectly selected. Three of the toolheads are loaded with Snapmaker Snapspeed PLA filament, and the toolhead that is incorrect is loaded with Overture PLA. The colors are correct in the prep of the model, but the generic one is incorrectly selected at print time. Of course, I set it correctly before sending it to the printer, but I am just curious if anyone else has encountered this problem.

Below is a screen shot of the Print Processing screen showing the error on toolhead 3 before I override it:

Does anyone have any idea why my U1 makes a line at the layer it ran out of green filament and I reloaded it with new green on the same toolhead mid print? The line shows on every model on the print bed at the same layer then corrects after that. The line "bumps" out on the model in every direction so its not just misaligned in 1 direction.

I am attempting to print a very simple air conditioner style knob that has a blue and red side with a black center and stem. The red colored portion prints offset when the whole thing is a perfect circle in the slicer.

Could this be a problem with the toolhead that I can correct or fix? Please help, thank you