I resized this great design I found on thingverse printed in petg and works great holds in tight with no adhesive, works great for many different cups sizes. I haven't had any really hot days to see how it handles the florida heat. I tried in PLA when I was making test sizes and that broke after a few uses so dont use PLA.
The author remixed this model.
I resized this great design I found on thingverse, thats the only change I made.