Printing multiple instances fails
MK3S+ w/enclosure
Prusa Slicer
All software & firmware up to date
I run two printers pretty much around the clock making the same part. It's a small part, and I typically do two instances at a time:
This is not the best example, but a run of two usually prints pretty clean. I'm using PETG on both a textured and satin sheet.
If I try to run more instances, either for or six, they pretty consistently fail, like this:
This run is better than most, but it always comes up, usually at the middle L instance, and the front R instance. Usually by then it's failed all over.
In doing extensive searching on this forum and others, a common refrain is an unlevel bed or bed that isn't flat.
What I've done so far:
- Changed to 7x7 bed leveling
- Dialed in the first layer z calibration.
- Performed a first layer square:
This one started from the R front, and failed almost immediately, so I stopped. On a hunch, I reversed the infill direction and tried again, to get this:
Also did a 3x3 test, which starts on R front:
And a retraction test, which showed some stringing:
So I ask, what am I missing. Is this a very precise level problem, is it a retraction problem?
Thanks.