This is a nice accessory to guide filament from either spool.
Petg is recommended.
Use a 3 x 14mm Prusa cap screw and elastic stop nut from the spare parts hardware kit,
or use a zip tie. Both methods are pictured.
Do NOT tighten down excessively.
A longer bolt will overhang the bracket and will catch on the spool.
The 14mm long bolt and nut tuck in nicely behind the bracket which can be attached in any of four different positions.
And give us a “like” and a “rating” after you install.
The author remixed this model.