Ultimaker 2/3 Filament Guard
thingiverse
I made this simple guard to prevent the filament from creeping behind the spool and wrapping itself around the support. I made this for my Ultimaker 2+ Connect but I think it will also work on the dual spool version of the Ultimaker 3--you'll just need to flip it over for the spool that goes to the left. Nothing special to print--I used white to match the printer.
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