How to stop filament blobs?

[Jace]

https://www.youtube.com/watch?v=JDLYZEzneyUHere's a video I just put up that shows the filament coming out. This is a brand new PLA roll, straight out of the pack.I have also tried an extrusion calibration but it's already correctly set. The filament is coming out the nozzle at 0.8mm thickness (checked with calipers once it had cooled) but it's only a 0.4mm nozzle (??).Not sure what else to look for... any ideas? Could it potentially be caused by capricorn tubing?

[Infergnome]

https://www.youtube.com/watch?v=JDLYZEzneyU/krogerfeedback Here's a video I just put up that shows the filament coming out. This is a brand new PLA roll, straight out of the pack.I have also tried an extrusion calibration but it's already correctly set. The filament is coming out the nozzle at 0.8mm thickness (checked with calipers once it had cooled) but it's only a 0.4mm nozzle (??).Not sure what else to look for... any ideas? Could it potentially be caused by capricorn tubing?

I've just had a look inside the nozzle, it's clean. It's making a slight popping sound when the filament is coming out, I suppose comparable to how a hot glue gun or caulking gun would give a popping sound when being used.

[jamesscoutop]

https://www.youtube.com/watch?v=JDLYZEzneyUHere's a video I just put up that shows the filament coming out. This is a brand new PLA roll, straight out of the pack.I have also tried an extrusion calibration but it's already correctly set. The filament is coming out the nozzle at 0.8mm thickness (checked with calipers once it had cooled) but it's only a 0.4mm nozzle (??).Not sure what else to look for... any ideas? Could it potentially be caused by capricorn tubing?. .

To counteract this, try adjusting your retraction settings to add a negative extra restart distance. For instance, if your retraction distance is 2.0mm, and you add an extra restart distance of -0.4mm, every time the extruder stops, it will retract 2.0mm of filament.