Alan Mikoleit wrote:What mortar was used for the fire bricks on the inside wall of the bell heater posted on 4-25? Can I make my own high temp. mortar cheaper using our local Lincoln 60 fire clay as one of the ingredients and if so I need a proven recipe?
regards, Peter
Glenn Herbert wrote:I think that the critical distinguishing feature between a masonry heater and a RMH is the firebox. If it has a J-tube or batch box with a verticalish heat riser, it qualifies as a RMH. It's the combustion zone that is the unique factor. The way the heat gets into the mass is interchangeable. And some RMHs could be considered as a subset of masonry heaters (ones built largely of cob with horizontal bench mass might be disavowed by the masonry heater trade.)
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