Okay, I'm a bit of a fire bug, and this got me thinking about a new fire pit design. If you had a whole house that you wanted to reduce to a pile of fine white ash, this barrel stove would be just the ticket. No economy here, just voracious wood gobbling fire. It ate up scrap 8' 2x4's all night long. I've already experimented with vertical feed rocket stoves built from stacking fire bricks out onto the outer hearth of my outside fireplace. It's educational, and nice to sit around on a cool evening. My plan now is to build a fire pit on a hillside that will include an ash clean-out that will double as a rocket stove. That way I can use the fire pit base to support other stacked fire brick chimneys and more. Initial plans call for no mortar construction, so it can be easily reconfigured or expanded. Here's a couple configurations. I could get more interested in a rocket mass heater with it being outside and allowing lots of dirt and stone construction without making a mess in the house. Outside butt warming bench would be nice in the winter. Anybody have any fire pit design ideas to share?