I’m printing on the stock PEI that comes with the Mini: https://www.lulzbot.com/products/lulzbot-mini-pei-sheet
Every print other than the one where I didn’t load a profile first has been auto-leveled: Filament profiles and auto-leveling
I wish I knew.
Yes.
Material is not coming out over the areas where there is no printing.
No.
Yes and yes.
No and no.
This is a separate issue so I'm separating it.
"As for the parts sticking to the bed, you'll first need to explain what you're doing, and on what. From the pictures it looks like you're printing straight to glass. Are you using hair spray? Elmers glue stick? Lulzjuice?"
I'm printing directly to the stock PEI that comes with the Mini, untreated with anything. It sticks incredibly strongly, enough so that it rips the PEI when I try to remove the piece using the clam knife, assuming I can even get the clam knife under the print in the first place. I have to go around the perimeter with a razor blade as carefully as possible just to get the clam knife under the print, then try to wiggle it around. I more recently did another print with a different material and it came up ten times easier. I think this is a problem with Colorfabb XT, next time I use it I'm going to try running the bed without any heat at all.
Edlink, I think I must explain the problem better. When the 3d model is placed in Cura in the center, or on the far side of the bed, the printer selectively doesn’t print parts of the thing to be printed. When the 3d model is placed on the close side of the bed, the thing to be printed prints normally. The print head travels over every part of the print as it should, it just doesn’t extrude anything over parts of it. This is repeatable. I’d like someone to attempt to duplicate this problem with their Mini. .Stl files that I’m using have been linked earlier in this thread.
The fact that I can get it to print normally on the close side of the bed indicates that it isn’t a mechanical problem with the printer, but a fault with the firmware or software telling the extruder when to extrude.
Let me provide another picture of a successful print:
As you can see, there is a great overlap of between the last picture of my first post and this picture. Areas that were traveled over yet nothing extruded printed fine in this second attempt. The only difference is that instead of the job being centered on the bed, I moved it to the close side of the bed. If there was a mechanical problem with the printer, this would not have happened.