I've been trying silicone and polyurethane casting and needed something strong enough to stir the brew. The stuff is hard to remove from tools and vessels so it needs to be something that can be used once.

Very simple and fast print, needs 6gm filament and takes 8 minutes to print on a Centauri Carbon.

Any filament, adjust the walls, surfaces and dimensions to suit yourself.

A way to use the last few turns on a spool.