googe wrote:I see something like a reducer :think: , why would that be needed ?. Doesn't the riser on the downcomer deal with that ?.
A couple of pics to help explain.
IMG_0966.JPG
IMG_0965.JPG
These pics are of Cavemans single bubble cap plates, it's the same principle as my 6" rum still but we'll use these to explain it for you.
In the top pic you see the bubble cap in place, but it still needs to be fixed to the plate.
2nd pic shows a riser that sits under the cap, it needs to be slightly higher than the top of your down comer to retain the liquid pool at the set height of the downcomer.
These plates are also clamped in position due to my modular design, this in turn forms a seal against the column wall. Bubble cap plates wont retain a liquid bath if there's no riser under the cap, or if there is no seal to the column wall.
That's why your idea is shit and you should crush it with a hammer :D