[UM2 Print quality issues with ABS]

Necro posting on this because I was searching for something and stumbled on this thread and I didn't see an answer.

The horizontal lines appear to be z-bearing binding. This is a common problem on the UM2. The solution is annoying. You need to buy higher quality z bearings, tear the machine down, and rebuild it.

I had the same problem with my UM2. It's solved now, but it was a pain to solve. I don't know how Ultimaker let crappy z bearings like this out the door. It's a manufacturing defect.

[UM2+: Huge blob + grinding at end of print]

5 hours ago, ghostkeeper said:

Two workarounds, depending on how technical you are. Choose one:

1. Download this file: https://raw.githubusercontent.com/Ultimaker/cura-binary-data/master/cura/resources/firmware/MarlinUltimaker2plus.hex And then upload it via Cura by going to the machine manager, click Upgrade Firmware then Upload Custom Firmware and select that hex file (also connect via USB first).
2. Or go to the machine manager, click Machine Settings, and then paste the following text in the "end g-code" field:

 

 

I installed 3.3-beta last night and that seems to have resolved the problem.

 

[UM2+: Huge blob + grinding at end of print]

I recently upgraded to the latest firmware on my UM2+ in order to gain the ability to print TPU for quadcopters. It prints great (love this!), but I immediately noticed a big blob on my prints. Switching back to PLA, there's that blob again. Is there a workaround short of waiting for Cura 3.3?