Originally Posted by VxZeroKnots
Yeah sorry, OP means "Original Poster" or "Original Post" depending on context. keep it coming!
Edit: Holy jealous, that is a well kitted shop, good for you! What is with the expansion chamber on your wood stove?
I just copied a double-barrel design I'd seen elsewhere. The second chamber is to get more thermal radiation into the surrounding air from the hot gases before they are lost out of the chimney.