https://photos.app.goo.gl/jW6CvTzLFB1ukSmY7 - in action!
50mm diameter, to drop through a standard mason jar mouth. Works great in a jam jar. For a little lager jar, just scale the X and Y out to the size you'd like. It works similar to a grit guard in a bucket you'd use to wash cars.
I rinse resin models in a mason jar of isopropanol (isopropyl alcohol). A magnetic stirrer agitates the solution, so this base keeps the models off the bottom.
Printed with PLA, which shouldn't break down in the alcohol solution.
The author marked this model as their own original creation.