Yellow Gas Caps

Problem with lost gas caps, you cannot get those little yellow gas caps and have to buy new cans, the special anti-spill nuzzles, tend to spray gas into the water when fueling boats, so we prefer to use the old style. Using stuffed rags plastic, tape and wine corks didn’t work for me, neither did leaving the cans open, so I designed this gas cap in blender from blender.org. It’s a free program, after tree attempts I made a design that seems to work for me. Printed with PLA plastic. PLA seems to resist gas and diesel well enough to work for our use. I seem to remember reading that PLA plastic can vent or interact with gas, but after using this for a year, I have not noticed it.