I have open a new ABS gray bobine some day ago.
and for 3 TIMES i have stop the prints becouse the bobine in 3 different points have a node.... and the wire cant go on.
that bobine its not usable, i cant start any print with the fear that happen again.
I had a similar problem with a roll of Ultrat this week, it looked good on the outer few layers on the spool but after 2 hours of print it jammed and stopped printing.
that bobine of filament its not cheap, and i want it perfect, who will pay now for that? i want a refound, and i send u back that bad bobine.
give us a shout through www.support.zortrax.com/support-form , include few photos, we will replace it.