content: Homemade Adobe Rocket Stove (Pics) I've made a clay/mud rocket stove in my backyard I wanted to share. It started off being a simple fire pit dug about 8 or so inches deep, I later on decided to dig an offset intake tunnel to suck air in to create a vortex similar to a dakota fire pit. During all the digging I kept finding clumps of clay in the dirt and realized I can build with the mud/clay given a decent mixture so I ended up covering the outlining rocks to make a little wall, figured why stop there and ended up making a top to the fire pit with about a 7 inch hole in the center.  First day drying, front view with tunnel Backside view First night firing It's been out there for a couple weeks now and I've had several fires in it and it's now to the point of being practically rock solid as long as you don't go chipping at it with a chisel, I can stand on it and holds me just fine. I built up a little chimney ~8 inches tall extending from the hole. As soon as you put a couple chopped logs down the chimney with some hot coals burning you'll get 2+ feet of flames roaring out the top, I couldn't believe how well this thing was working it was just blasting incredible amounts heat and flames. Front view while firing the base of the the chimney I later started to make a lid with big holes in it to use as a clay grill but I had to use a metal bbq grill to lay over the chimney to keep the lid's flat shape while firing. Now this fire is burning hot, so hot that the metal grill had become burning red, even the clay/mud lid was glowing red when I took it off which was surprising. The lid was heated much too fast and ended up growing a large crack and eventually broke. My lid/grill which unfortunately cracked and broke after heating way too quick Since the stove burned much hotter than I had initially thought the water in the chimney quickly turned to steam and some cracks formed on the outer layer as it dried. Thankfully the cracks were skin deep and everything was still very solid and the inside column of the chimney was crack free. I could lean my bodyweight on the top of the chimney without any kind of give. Day after firing the chimney I dug up some chunks of clay and filled in all the cracks. With a power drill and a kitchen whip attachment I made a sludge out of dirt, clay and water in a bucket then screened out the rocks and plant debri. With the liquid I plastered the entire stove to give it a smooth finished look.  Back view Side angle Front with Intake Tunnel I'm currently processing pure clay hoping I'll be able to fire some pottery over it soon.  Anywho I've been having a blast playing in the mud, cooked some burgers over it the last two nights which turned out really good. Thought I'd share and maybe inspire others to make something similar. These things are just too cool and very simple to make.  Glowing Aftermath