Adapter that allows the spool holder to be mounted at a 45 degree angle towards the back of the printer, similar to how the spool is mounted on the Ender 3 S1 series. This is useful if you're running a direct drive setup, especially if you also have a filament runout sensor.

I used two M5 heat set inserts and two M5 screws to mount the stock spool holder to the adapter, and fourM5 screws and T nuts to mount the adapter to the top of the printer frame.