There are some very old clay pipes lying around my family farm. There are 4" inside with 6" flange, and there is a 36" piece, a 90 degree piece and a 12" x 36" catcher with a 4" connector at the bottom.
Would these stand up to the heat that a rocket stove makes? Seems like if so they would make good stove components.
Using a 1/4 inch ceramic blanket gives you 3.5 inch diameter riser which is greater than the 3 inch minimum on Peter's batchbox spreadsheet but who knows how useful 3.5 inches is in a real world situation.
The alternative of wrapping the blanket on the outside probably works as well since when the clay cracks the heat won't get out much. Though those are two different uses since the first is low mass, and the second is high mass.
Location: Moved from south central WI to Portland, OR
I have recently made my second riser out of clay and wood shavings. Just enough clay to make it hold together. Since the humidity is high in Abkhazia, it was put into use before it could dry out. So far looking great.
When all four tires fall off your canoe, how many tiny ads does it take to build a doghouse?