Ultimaker Original Spoolbar for Dual Extruder

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I was dissatisfied with the shaky design of the Ultimaker Original spool holder, so I designed a custom spool bar with locking mechanism for dual extrusion to ensure seamless filament spool performance. Simply remove the small components of the original spool holder and replace them with this printed bar. Place both spools on and secure the outer one in place to prevent it from slipping off the bar. The rotation should produce minimal friction when the extruders pull the filament.