Crono986

Yep. Checked pulleys. I bought the box from Ultimaker so I can ship them one of my UM3Es. I'm just going to have them go over it. Something curious did happen though. On one of my UM3Es, I produced an amazingly beautiful print (no changes from me, I've been cranking out prints 24/7). Excited, I printed another part. Exact same printer (UM3E) Exact same slice settings (default 0.1mm fine) Exact same filament Exact same orientation All parameters I can think of, consistent And yet I produced two very different prints. What could cause this? (look at the difference in the black piece)

Good tips The feeder feeds really smooth. Doesn't seem to be an issue there. The head does stutter, but not anything I haven't seen other printers do - especially if it comes to infill between close walls. Remember, this issue is only happening on one axis.

Already in talks with Erin Oliver. I wanted to try one last time to troubleshoot with community before sending it to Memphis. I believe that is the way to go, though.

Team, First and foremost I wanted to thank you all for being so patient with me in working through this. I am grateful Ultimaker has such a great community that people would go out of their way to help strangers. That said, here is the print from the second printer - same exact settings. Both printers were bought used from the same ex-retailer. Belts have been tightened and greased. Build plate screws are in and stable - I manually level it and active leveling is on. I will film a few layers and see if that answers any questions. I have tried prints with achingly slow speed, acceleration, and jerk.

Your X and Y faces are so much cleaner than mine!

Here is the first print from one of my 3Es. I will print on the other 3E as soon as it is complete.

Yes 100% the filament is dry. It was brand new prior to printing. I have put hundreds of prints through this printer with tons of different filaments. It is not a filament issue.

Here are the three prints with three STL levels: Left is SW default coarse, middle is SW default fine, right is super fine (what I typically print) The problem persists. ToughPLA black tonight.

And yea, I already know it won't look like that. Wow that is smooth.

I'll have two on each printer tonight.

I miss with brims and rafts supports very often I also change infills and speed depending on if i'm prototyping or not. I've re-downloaded the STL you linked to make sure we are on the same page. I will print that cube using the purchased ToughPLA on each of my 3E machines and report the results.

I run defaults on my 2+ The only reason I fiddled with the 3E slicing settings is because of this issue I am printing a high poly cylinder and a medium poly cylinder now on the same print to see if it's an STL export issue ToughPLA also arrives today, so let's coordinate on what we would like to print

I think it'd be best if someone other than myself provided the slicing STL / settings - that way we can eliminate that as a variable.

I've pulled the trigger on black. I'll let you know when it comes in, and we can share a common test print. Can you please share with me a GCode for a UM3E? Or we can do it manually by going through all the settings, whichever you prefer.

Rudy, my mistake. I thought "PolyMax" was Tough PLA. I'm having trouble finding it in 2.85mm Do you have a direct purchase link?