Use concrete blocks to create a stand for your oven. Lay the first layer down in a square shape with an opening at the front. Use a level to make sure that the layer is even. Continue laying concrete bricks until the oven stand is about waist-high.  Once the concrete blocks have been stacked, fill every other core with concrete to cement everything together.  The space inside the oven stand can be used to store firewood. Create a wooden concrete form in the shape of your hearth. Next, place the wooden form on the oven stand and fill it with concrete. Use a long, straight piece of wood to level off the concrete and let it dry for a few days. Install a rebar grid into the wooden form before pouring the concrete for additional support. Set a layer of firebricks using the intended shape of the oven as a guide. Connect them with a thin paste made of one part sand and one part fire clay. Add water until the mixture becomes a thick slurry. Avoid the temptation to use mortar to connect the firebricks. Mortar won’t expand and contract with the bricks and will eventually crack them. Lay down firebricks in a circular shape to create the walls of the oven. As you build, slowly angle the layers inwards to create a dome shape. You may need to cut the bricks into smaller pieces using a tile saw.  Let the sand and clay paste dry on each layer before continuing. Leave a space open near the back of the dome. This will allow the smoke to vent into a chimney. Surround the opening at the back of the dome with a layer of firebricks. Stack the bricks in a square shape to create a tall chimney. The smoke inside the oven will vent out of the space in the back and the chimney will direct it into the air. You can also create a chimney base with the firebricks and then purchase a tall, metal chimney flute. Attach the flute with mortar. Use red clay bricks to create an oven entrance. This is where you will add firewood and insert food. Traditionally, brick oven entrances are built into an arch shape. However, you can also make a square shaped entrance if you’d like.  Use mortar to connect the red clay bricks. You can create an oven door out of wood or simply use loose bricks to block it off when necessary. Keep in mind that closing off your fire during use will cut off oxygen and cool the oven, or even extinguish it. Cover the entire oven with a thick layer of vermiculite-based insulating concrete. Let the concrete insulation dry according to the manufacturer instructions. Once it’s dry, add a layer of red clay bricks around the oven to give it a traditional appearance.
ابن حاملًا للفرن. أنشئ الموقد. بطن الموقد بالطوب الحراري. اصنع قبة الفرن. اصنع مدخنة. اصنع مدخل الفرن. غطِّ الفرن بمادة عزل.