I learned something new today. I was going to use kiln-fired bricks for a rocket mass heater, but I had never heard of silicon carbide bricks. They cost a lot

I learned something new today. I was going to use kiln-fired bricks for a rocket mass heater, but I had never heard of silicon carbide bricks. They cost a lot more $10 vs $3 but for a small project, those are perfect. Thankyou!