The original design by @Stiggan2k was designed for a custom direct extruder part that wasn't applicable to me, so I made my own design to be plugged into a direct extruder plate (the one I got was from Amazon here).

I measured the original model and tried to replicate it in Autodesk Fusion 360, thus ended up with the current design. Still a beginner at Autodesk and 3D modeling.

All credits goes to the original designer.

02/08/2021: Remix V3 released.

Print Settings

Printer Brand: Creality

Printer: Ender 3 Pro

Rafts: No

Supports: Yes

Resolution: 0.2

Infill: 20%

Filament: HATCHBOX PLA True Black

Notes:

Print it vertically. Time estimate: 45 minutes at above given settings.