Uploaded December 2015 | Updated September 2026, 18 hours ago
Shaping K 26 fire bricks to make octagonal heat riser base for my greenhouse rocket mass heater. Six inch Peter van den Berg Batch Box combustion chamber with the port and lower section of the heat riser made from this insulating firebrick.
Shaping K 26 fire bricks to make octagonal heat riser base for my greenhouse rocket mass heater. Six inch Peter van den Berg Batch Box combustion chamber with the port and lower section of the heat riser made from this insulating firebrick.










