Issue after cold pulls and adjusted parameters: Bad edge appearance  

Issue after cold pulls and adjusted parameters: Bad edge appearance

Hi together,

On Saturday I solved  my underextrusion problems and changed the retraction values for length and speed to: 2mm and 40mm/s. Afterwards I printed original Prusament PLA black with 220°C nozzle temp, Print velocity 100%. Overall the print looks fine, but the corners look strange. Sorry, I don`t find other words to describe my issue. Did not found anything in topics and on other websites. I know it can print very nice edges.

-> Do you know how to fix that "Edge-issue"?

->Is there a name for this issue?

Please let me know, if you need further information or pictures.

Thanks for your assistance

Alex

Background:

Last Saturday was fully dedicated to get my mini runnign again, as I had massive problems with underextrusion. Assumption, I clogged nozzle and especially the heatbreak. Especially that clogged heatbreak had severeal of other subsequent issues, which prevented me from proper prints. Solved with cleaning of the extruder unit, PTFE tube exchange, everything adjusted according to nominal values/condition. Several cold pulls in Heatbreak and nozzle solved it.