Might be the infill that’s causing blobs, 100% infill on the Z calibration test. So print it with 10% instead. Maybe this Polymaker filament does suck.

Went to -2.10. Still waiting for it to print enough to tell.

No idea why on the brim there was blobs, but not on the infill, just gaps.

Good print for testing Z offset though, better then the calibration one. Not seeing gaps or blobs yet, nice.

Maybe print Z calibration @ 95%, if it’s over extruding.

Just saw some blobs on the infill. No gaps though.

Well, good to know, offset wasn’t wrong at -2.10, might be perfect. The blobs are for some other reason.

Didn’t need to change firmware, except the tramming in this firmware is better, since it moves the X faster. Only downside is, sometimes bed leveling can’t be activated, no idea what the problem is, pretty sure HS mode is disabled.

Not perfect, holes or gaps.

Probably needs to be a little closer. A bigger print, had a better offset, none of those holes.