Rocket type stove, made with light weight ceramic refractory. The refractory was trowled onto a 1/4" x 1/4" mesh form. The same mesh use for the wood support. Re-bar wou;d be better for supporting for the firewood but this is what I had on hand. The refractory is mixed with water like cement and is trowled on one section at a time and allowed to set up. Building several at a time would be more time efficent. The weight of this unit is only 27 pounds. The ceramic refractory is rated at 2500 degrees F.