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Use as a backflow incense burner (smoke collects around the bottom of the cauldron) i would recommend a rubber washer between the incense and also PETG over PLA if you have a way to print it.
Rubber washers ---> https://a.co/d/cpL7cCn
At the bare minimum a metal washer (outside diameter= 5/8") should be used to keep from melting the plastic.
Can also be used to hold a tealight candle for ceremonies/decoration.
There is a version with overflowing bubbles, and a low poly version (the one you see in the pictures of it working).