Others have suggested greasing the dowel or using bearings, and if the issue was friction, then they’d be right.
If the issue is inertia, then this won’t help. Accelerating a given mass to a given velocity requires a certain amount of energy, no matter what.
What could help is something similar to a Huygen drive, where the filament is looped around a large wheel (large enough that the filament can curve around it without breaking) which is able to move against a spring or counterweight. This would allow the movement of the spool to be “averaged out” rather than accelerating and decelerating sharply on every extrusion and retraction.
Others have suggested greasing the dowel or using bearings, and if the issue was friction, then they’d be right.
If the issue is inertia, then this won’t help. Accelerating a given mass to a given velocity requires a certain amount of energy, no matter what.
What could help is something similar to a Huygen drive, where the filament is looped around a large wheel (large enough that the filament can curve around it without breaking) which is able to move against a spring or counterweight. This would allow the movement of the spool to be “averaged out” rather than accelerating and decelerating sharply on every extrusion and retraction.