this post was submitted on 01 Dec 2023
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Pros: no fanning/bellowing
Cons: needs a stool to reach the chimney
...this channel is a treat. He made a natural draft furnace 6y ago, and with this one the improvements are visible - addressing short-circuit drafts, stronger airflow due to parallel tuyeres, and apparently far more yield. (Back then he got no iron from the slag around the tuyere.)