This is meant to exist with our other Ender filament guide which attaches to the extruder area. This slides into the top bar and helps guide the filament. It's a single piece print which prints with no supports. Filament can be more securely locked in by sliding a piece of filament down the tunnel and around the bend.

If you think the hole should be positioned further or closer to the printer, let me know and I can make alternate versions.