With this model, print in VASE mode and remove TOP and BOTTOM layers. Standard size is about 75mm diameter.
I print these in TPU (at 95% for my cup size) so they fold flat and can be placed in my pocket. Great for when cafe uses a thin walled cup to stop my hands from getting burned.
You can also print from PETG, however that is not as easy to fold as TPU when not in use.
The author marked this model as their own original creation.