This guide keeps the off-printer filament from rubbing against the top frame and keeps the filament running free. It's 200 mm wide and allows free movement of the extruder.
Most importantly the macjine runs just that little bit quieter now - the guide's primary purpose for me!
The bar can be rotated to acomodate whatever angle your filament approaches your hotend.
The author marked this model as their own original creation.