** I've uploaded a new model titled “Flask Funnel V5” along with the print profile. It is a lot cleaner. **

The small metal funnel that came with my generic flask was horrendous. I ended up designing this with a different/larger vent area than other models that I found. The liquids don't spill out of the gap and it “breathes” with a decent pour. The air gap also acts as a runoff if you overfill the flask.

I used normal PETG and printed on one of my A1 Minis. No supports needed, should take around 35-40 minutes because I slowed it down for best adhesion.