Hi,
disclaimer: I belong to echox, this is the RaumZeitLabor Ultimaker.
After opening up the hotend, I've found quite a bunch of PLA stuck in there. This is the V2 hotend with that little white thing between the bowden cable and the hotend. I'm not sure what happened here, but isn't the V2 hotend supposed to fix nozzle jams?
EDIT: After cleaning the hotend and retry printing, the nozzle is jammed again after no more than two minutes. It seems that the gap between the white thing and the PEEK insulator is simply too big.
EDIT2: I noticed that the brass tube wasn't connecting to the white plastic thing, so it's obvious why there are blobs in the print. However, Filament is still slipping. Not sure if it's a jammed nozzle again, but I don't think so, as I can manually push the filament further if it is slipped. Printing speed is currently 70mm/s with a layer thickness of 0.3mm (due to the 0.6mm nozzle)..
regards
Felicitus