No seam, and yes, the gasket was pushed down between the metal and the cob
Is there already a seam where it looks like there is some gasket cord around the barrel
Hmm, that was my worry.
Cutting the barrel could leave a not-perfect edge, which when you try to seal it might expand/contract differently, or warp and make it really tough to properly seal it again.
This would be my first choice, I've found barrels with clamps but so far I can't clamp two of them together. Plus, I'd need to extend the chimney and insulation - which means changing the position of the exhaust conduit. Plus, can I just increase the chimney height? (I need to research that one!) and I'd need to remove the existing barrel.
one that will be cut to fit over the burn tunnel snugly, and provide a nice lip for the second barrel to sit on, so it's easier to remove it and use a combo of the gasket rope and a clamp.
I was looking for a way to avoid destroying the manifold. I rather think there's no choice. I knew this would be an issue when we built it, but was (over)confident at the time that my magic wand, or the permie rmh maestros would magic up a painless solution ;o) I found it difficult to construct the manifold and to get it to connect to the barrel - so I tabbed the barrel opening. Image below.
Is your barrel that far buried that you can't just chip away the cob (I'm assuming) to free it?
Antone cheri, je vous aime mais je connais mes limites.
It could be interesting to cut just the top, leaving a lip of one inch or so. Onto which you would put a gasket afterwards. And lay the thick steel plate atop.
Or you could find yourself a barrel lid and clamp.
Fox James wrote:I cut out the top of the barrel but left 1.3” around the inside of the barrel flange, I then cut mutable slits all around so I could bend up the metal to form a channel all around the top. I then dropped in a 3/4” length of oven door rope and sat a 1/4” steel plate on top of the fire rope.