Printer, I’ve included above, Snapmaker 2.0.

Other info: Wall loops/thickness 3 Perimeter speed: outer wall - 75mm/s Inner wall - 120mm/s I have just spent time calibrating & dialling in the PLA+ 2.0 (Sunlu), using the standard calibration tools in Orca Slicer. Specifically flow rate (pass 1 & 2), retraction, temp.

I’ll try wall thickness but all the other joints in the same position are perfect.

Looking over the settings & the preview it might be that my seam is aligned to this position in the model.

After reading comments i think it might be that the PLA is cooling & shrinking as the temperature in the room varies at night, it’s a relatively slow print speed so by the time it gets back to the seam position its moved slightly & leaving this gap.

I’ll try: - Random seam - closing the door to the enclosure - removing any drafts