Radial filament guide for cabinet mount

This is a filament guide designed to ease the path of the filament and prevent it from over-bending.

I've put the 3D printer into a cabinet and feed the filament from the top and through the side (as seen below the guide). I was using a PTFE bowden tube as a guide previously, but since the spool is on top of the cabinet, I needed a support structure to avoid pulling straight down.

Turns out, this simple guide without the PTFE tube entirely reduces the friction by more than half, since a mi