Straight clay for the stove, clay and sand for the bench. We use clay because it works and is easy to take apart and clean the bricks. For a permanent build you would use refractory mortar for the stove and you could still use clay and sand for the bench.
They needed to break it down and clean it up so there is no binder. For a permanent stove in the home I would add 1 part lime to the standard 1 part fireclay to 3 parts sand. A splash of Type S cement, like, 1/4 part, doesn't hurt either.... but this is for the bench and all the other masonry, not for the firebox.
Thank you. Some more information on design would have been nice, especially as the association trying to promote the use of masonry heaters to the public. Is this really a rocket stove? Unless I missed something, I don't see a riser, just flame passing into the second viewing chamber and then over and into the bench seat. If anyone is making this stove, the terra cotta liner in the seat of the bench is not needed unless the goal is to make the bench "not too hot" so it can be sat on. If someone needs the bench to heat the entire home, no need for this liner which adds 30 minutes for everything to heat up. A barrel is an ugly thing but for a bench stove like this in a home, you can't beat the riser going up into the barrel and THEN the heat around the bench. Fox Fish Rocket Stoves has a similar stove.. kinda.... Your top glass turned black. Unless you blast the flame directly into the top glass before it exits into another chamber, I doubt the glass will clean up. Either way, cool video. Thank you.
This is specifically a double shoe box rocket stove. Which is ideal for making into a cooktop as we did here. The ceramic glass is for the workshop so participants can actually see the fire doing its thing inside. You are correct that we didn't want to over heat the bench since this was continually fired when it was finished for our pizza party that happens at the end of our meeting.
The discernment between rocket stove cores and masonry fireboxes involves a lot of grey area due to all the hybridization over recent decades. This is a double shoe batch box rocket, but what makes it unique and kind of 'cutting edge' is that it has a stub riser above the firebox with a vertically oriented exit port (facing the viewing glass). This helps to achieve much of the pull you get from a normal rocket heat-riser, but also, due to buoyancy of the hot gasses, causes an optimal restriction and turbulence of gasses thru the port. In my experience, this design is less twitchy (more stable during less-than-ideal firing conditions) than a triple shoe box. In fact, I have gone back to most of my triple shoe box builds and converted them to this stub riser. All clients are saying it burns way better.
Nice! Wonder what the mortar mix is. No cement?
Straight clay for the stove, clay and sand for the bench. We use clay because it works and is easy to take apart and clean the bricks. For a permanent build you would use refractory mortar for the stove and you could still use clay and sand for the bench.
They needed to break it down and clean it up so there is no binder. For a permanent stove in the home I would add 1 part lime to the standard 1 part fireclay to 3 parts sand. A splash of Type S cement, like, 1/4 part, doesn't hurt either.... but this is for the bench and all the other masonry, not for the firebox.
Wait why did you build it then tear it down?
This was one of our workshops at our annual meeting at Wildacres.
Thank you. Some more information on design would have been nice, especially as the association trying to promote the use of masonry heaters to the public. Is this really a rocket stove? Unless I missed something, I don't see a riser, just flame passing into the second viewing chamber and then over and into the bench seat. If anyone is making this stove, the terra cotta liner in the seat of the bench is not needed unless the goal is to make the bench "not too hot" so it can be sat on. If someone needs the bench to heat the entire home, no need for this liner which adds 30 minutes for everything to heat up. A barrel is an ugly thing but for a bench stove like this in a home, you can't beat the riser going up into the barrel and THEN the heat around the bench. Fox Fish Rocket Stoves has a similar stove.. kinda.... Your top glass turned black. Unless you blast the flame directly into the top glass before it exits into another chamber, I doubt the glass will clean up. Either way, cool video. Thank you.
This is specifically a double shoe box rocket stove. Which is ideal for making into a cooktop as we did here. The ceramic glass is for the workshop so participants can actually see the fire doing its thing inside. You are correct that we didn't want to over heat the bench since this was continually fired when it was finished for our pizza party that happens at the end of our meeting.
The discernment between rocket stove cores and masonry fireboxes involves a lot of grey area due to all the hybridization over recent decades. This is a double shoe batch box rocket, but what makes it unique and kind of 'cutting edge' is that it has a stub riser above the firebox with a vertically oriented exit port (facing the viewing glass). This helps to achieve much of the pull you get from a normal rocket heat-riser, but also, due to buoyancy of the hot gasses, causes an optimal restriction and turbulence of gasses thru the port. In my experience, this design is less twitchy (more stable during less-than-ideal firing conditions) than a triple shoe box. In fact, I have gone back to most of my triple shoe box builds and converted them to this stub riser. All clients are saying it burns way better.