Having browsed through the CuraEngine code, I am of the opinion that "Enable Prime Blob" simply isn't working at all for Lulzbot printers. There may at times, coincidentally, be some filament spurting out when the start gcode returns 30mm of filament into the hotend, but that isn't coming from the "Enable Prime Blob" function in Cura2.
Unbreak Now! (5)
Needs Triage (10)
I was able to test and confirm, removing the ";" in the start g-code does allow both nozzles to prime before beginning the print.
I have seen similar shifting in prints, however I can not consistently re-create this issue. One printer may shift for one print then be just fine on the next print.
@west ok thanks
@Baldwin ok thx
I should also mention -- I can see a blob in the "visualization" on Cura's build plate image. It appears / disappears when enabling/disabling the Blob in settings, and changes position appropriately with changes to the "Extruder Prime X Position" and "Extruder Prime Y Position". The visualization is not affected by whether Brim, Skirt, Raft, or None is selected.
Hmmmm.... I initially had this problem with 2.6.54, and still have it with 2.6.60. Both on Windows10 with Mini.
I tested this using 2.6.54 on Windows 7 & 10 as well as on an iMac running High Sierra (10.13.1) and a Mac Mini running El Capitan (10.11.6) and got the following results:
Win 7 - worked with Brim but not skirt on Lulzbot Mini
Win 10 - worked with Brim but not skirt on Lulzbot Mini, did not get a blob with Brim and Skirt on Taz 6
Mac Mini - did not get a blob with Brim and Skirt on both Lulzbot Mini and Taz 6
iMac - worked with Brim but not skirt on Lulzbot Mini, did not get a blob with Brim and Skirt on Taz 6
@west I will give that a shot, it is interesting that it doesn't allow more than 2 top layers at 0.378 layer height but at 0.38 I can do 3.
@EricNugent try using the standard .38 profile. I have multiple successful prints of the blower duct with that
@logan The STL for the universal blower duct will need to be revised. The top of the part is too thin to register multiple layers in cura. I discussed and have shown the issues to @kent if you need clarification.