How much water can you get from a shallow water tile?

I learned of a technique involving using fire heated rocks to boil water in a pit, which would help me in my wilderness playthrough.

I was planning on adding a recipe, but I can’t make a nearby shallow pit a requisite. I was thinking of making a construction that turns a shallow pit into shallow water, but I don’t know how much water you can get from said water, or if it’s completely unlimited.

Shallow water gives infinite water.

As I understand, the fire heated rock is similar to the water purification tablet.

Ahh, dang.

Well, maybe I can make a water boiling pit furniture item or something.

I did it. Behaves kind of weird, this is my first time trying to add something to the game. But, it appears to work.

how did you pull this off?