Foam cup holder w lid
thingiverse
Foam cup holder Similar to a beer "stein", the lid will protect your favorite beverage from the elements, garden critters, dirt, fruit flies, etc. As a bonus coffee stays hotter longer. In one test, starting at 167 F, after 10 minutes the temperature dropped 14 degrees to 153 F. Without a lid, it fell 29 degrees, to 138 F. The foam cup is a Walmart packaged "Great Value" brand, marked "8.5 fl. oz." cup. Probably an 8 ounce. Another cup may fit this holder but it is unlikely to be a good, tight fit. Then again, some judicious scaling may allow it to fit another size cup. Metric files provided. Also, there's a "southpaw" file for the left-handers.
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