Vertical Separation in Print

[Mwpr3d]

Hello all,

I've been using my rostock max v2 for about 3 weeks now off and on, and despite resolving most issues using the forums and other resources, I have one issue that seems to persist.

With most prints, it looks like the wall is separating in a nearly straight line vertically. I'm not quite sure what to do to correct this, and additionally, I'm not even quite sure how to describe it. Attached is an image showing exactly what is happening with the print still on the heated bed.My v2 is still completely stock, and I am using mattercontrol v1.2. I have made zero modifications, but I am currently trying to print a mount for the e3d v6 hotend.

What I have tried so far:
Adjusting temperature of hotend: 208 C seems to be the absolute lowest i can print without serious quality issues, the print in the image was done at 220 C (ABS)
Adjusting retraction settings: I've messed around a little bit, Upping the retraction slightly each time but it does not seem to help as the issue (and severity) persists through adjustments
Adjusting Z-Lift: Again, no changes in quality
Calibrating z-height: I have recalibrated the v2 quite a few times, but i suppose it could still be wrong

Thank you so much for reading, and if you have any suggestions I would really appreciate it.

-Matt

[Earthbound]

Temps seem very low. The lowest temp I've ever used for ABS is 220C with poor result. I typically use 225-235C. I haven't used MC recently and suggest you give KISSlicer a try. In the meantime, crank up the temp and slow the Perimeter speed so material has more time to ooze together at the seam line.

[JFettig]

That goop is likely from super high nozzle pressure from printing at such low temp, bring it up to 235C or even 240C, you can go higher if you are running a metal hot end(not stock).

[Mwpr3d]

Thanks for the replies. I'll try it out again today.