
In the last 2 months I have bought about 10 of these 1kg spools of NinjaTek flexible filament. This spool appears to have been wound onto a smaller plastic spool and the thread continues to unravel on its own. The filament is twisted and was a problem from the start. Very complicated. Apparently I received a returned item and now it has become my problem. Otherwise, Ninjaflex 85A Shore Hard TPU/TPE is a great flexible filament for the Lulzbot Mini 2.

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