⬢The Filament guide is an optional accessory for your Original Prusa MK4 printer. When printing tall objects with a full filament spool, this accessory prevents filament tangling if it falls off the spool to the side.
⬢Where to get the Filament guide?
⬢Factory-assembled printers include the guide (marked E1) and fasteners in the package.
⬢A G-code pre-sliced for PLA (marked R1) can be found on the bundled USB flash drive.
⬢An editable 3MF file can be found on Printables or in the drivers' package.
Note that marking on the printed parts is either Ex for factory printed, on Rx for self-printed. The geometry is the same.