Lost wax casting flask, metal casting

this is a flask to put your wax tree in and pour the plaster, its reusable and way cheaper than buying it for 40 bucks.

this design is made for fitting one ring (if placed right it can fit more) but if you need a bigger one just scale it up to the appropriate size.

filament used,

Bambu Lab TPU is the best filament for this because it allows for a easier removal from the sprue base but also the plaster from the flask.
If you don't have TPU then PLA or other materials will work fine too.