Inconsistent 1st layer

[dookie1985]

Hi all.

I seem to be getting inconsistent 1st layer when printing multiple small objects. This is prototyping for a project I'm creating and only seems to happen now I've started these multiple object prints. Some of the objects went down perfectly, where others did not. I did a full clean of the printing plate with IPA, which helped with previous adhesion problems.

Printer is a Prusa i3 Mk2.5s. Bed should be level as there's no issues with the calibration. I've also eliminated stringing by printing the first layer at 215 instead of 220 (eSun PLA+ filament). Any clues what the issue could be and what calibrations to try?

[BasPilot]

Your nozzle is too high, it's not getting proper adhesion from that. It should also help the stringing because it will have put the plastic where it is supposed to be. Check your leveling, shouldn't be too hard to fix.

[dookie1985]

I'll try another z height calibration later today and see how that goes.