December 20, 2025
Description
Got frustrated filling my RV and travel trailer with anti-freeze for some winter usage. Hard to get a normal funnel at a decent angle, and having a guide for the jug to line up with helps a lot. FreeCad and a Prusa Printer to the rescue.
Example pictures show this at 100% print size, and 125% print size. The 100% works better on the trailer, but it's water inlet is not recessed in a panel. The 125% works better on the RV. It fits snugly into the inlet with that long taper and sticks out past the panel.
Recommend using PETG or PCTG. I printed with 6 layer walls so it's essentially solid. Printed on a Prusa Mini, vertically oriented in 4 to 5 hours
Print some spares to give away to fellow campers
License:
Creative Commons — Attribution
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