The base is from another camera arm, but made an atachement for a filament guide that can be attached in the slots on the top frame of any 2020 alluminium frame with standard T nuts and M3 bolts. Ideal for a printer with a direct extruder with top feed filament as per the picture. Once in place this will stop the filament unravelling from the pulling motion of the extruder.
Download from thingiverse