These simple ovens catch the heat of a fire and focus it into a central baking area. In use for centuries, the reflectors can be any size, virtually any shape, and made from almost any new or cast off sheet metal. To make your own, you’ll need some sheet metal, some snips to cut it, and a pan or grill to place inside the unit. For the one pictured, I “borrowed” an old cookie sheet from the kitchen. For larger and heavier units, I’d definitely recommend a drill and some pop rivets to secure the joints, or sheet metal screws – whichever you prefer. Fold a large rectangular piece of sheet metal in half to create the main piece. Then cut some 90 degree triangles to build the sides. If you’re good with sheet metal and have some specialized tools for it, this entire project will be a breeze. I just used the snips, my gloved hands, and cut interlocking tabs to join the two triangles to the main piece. The final bit is the easiest, set it all up. I used several stones behind the unit to make it stand up by the fire (though integrated legs are better). I also used stones in the front to support the pan. More traditional set-ups involve holes in the side panels to use spits and skewers, and to place rods that would support a pan or grill. However you build it, just make sure that it is sturdy and able to stand up to the weight of the food and the likelihood of being bumped by the cook. Maintain a large bed of coals, and you’ll be baking in the reflector oven.