Simple and fast print (under 30 minutes with 'standard' speed printers and under 20 with something like a Bambu Lab even with TPU. No supports needed.
While this can be printed with any filament, I strongly suggest TPU. The flexibility of TPU offers a better seal and improved usability. Win-win.
We have a family member who opens a can of carbonated water, drinks part of it, then puts it back in the fridge. And of course a few hours later, when she returns to finish it, it is invariably completely flat.
Made this simple cap to help slow down the carbonation loss.
This fits many different aluminum cans (some samples posted here). Soda, carbonated water, beer and many energy drinks.
Another use: keep flies, bees and other insects out of your open soda or beer cans at a picnic or other outdoor activities!
The “classic” fit. Not as airtight as the version below but the size is a compromise between easy usability on-off and airtightness. TPU seals better than harder plastics. My personal recommendation is to start with this one before trying the extra tight one to see which you prefer.
Available with and without a “hook hole” - a small hole in the “pull tab” to allow for hanging on a small hook for organization.
Added a version that is pre-scaled down to be even tighter. If you use this version, you will almost definitely want to use TPU if you weren't already planning to. It is a (little) bit harder to get onto the can though. Available with and without a hook hole.
Multi-cap photo courtesy (and used with permission of) @milfordoj.
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The author marked this model as their own original creation.