I love putting ice in my pre-workouts, protein shakes, etc. but I hate getting a mouth full of ice while I drink them. Feel free to resize as needed to fit your blender cups. An easy way is to use tinkercad or some other cad program you're familiar with to size this to fit your cups.

Layer Height: 0.2
Wall Thickness: 1.2
Infill Density: 25+ (if you want the center cylinder more solid then increase the infill)
Supports not needed

IMPORTANT: MAKE SURE TO USE FOOD SAFE MATERIALS! ONLY YOU ARE RESPONSIBLE FOR YOUR OWN HEALTH, SAFETY AND WELLBEING IF YOU PRINT AND USE THIS FILTER.