Post Today 02:01:18 PM Subject: Greenhouse install: Exhaust pipe gauge etc.
About to get started on a Greenhouse Rocketstove install with the mass being a 15' long bench to germinate seedlings on. While shopping around for exhaust pipe I came across some in 8" x 60" sections but it is 28 ga metal. Is this too thin to hold a whole lot of cob? How much cob could I feel safe about piling on?
Related, is it necessary that the chimney in the heat riser be thick metal (I think it was suggested in the book to be at least 1/4") ? What gauge can this piece be?
It also seems that many folks are forgoing the metal drum with top and bung for the wood feed area in favor of one built of bricks. What's the reasoning here? Are small drums difficult to find? Is one preferable?
I'll try to do some documentation along the way for those interested as I've learned a lot from what has already been posted. Thanks!