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Brick ovens are time-consuming, expensive projects. If you build the oven incorrectly, it might crack and undo all of your hard work. If you want to build the oven properly, you need to follow a plan. Brick oven plans can be found online or purchased from your local home improvement store. Some great plans include:  Forno Bravo’s free brick oven plan (https://www.fornobravo.com/pompeii-oven/brick-oven-table-of-contents/) Makezine’s free brick oven plan (http://makezine.com/projects/quickly-construct-wood-fired-pizza-oven/) Purchase oven plans from EarthStone ovens (http://earthstoneovens.com/) The plan you choose will depend on how much space you can dedicate to your oven. For example, if you have a small garden, you will need to build an oven that will fit inside of it. Other considerations include:  If you’re building the oven under a patio cover, the oven should be short enough to fit underneath it. However, make sure the chimney can stick out from underneath the patio cover to release the smoke. If you want to cook large pizzas, the floor of the oven must be large as well. Budget limitations should be taken into consideration. If you have a small budget, plan to build a smaller oven. Dome ovens are igloo-shaped brick ovens with wooden doors. They have an easy, rustic elegance that can add a lot of visual interest to your backyard. Additionally, these ovens will cook food evenly and can be heated to very high temperatures.  Dome ovens can be difficult to build. Some plans even involve woodworking. These ovens can take a lot of time to heat up properly. Barrel ovens are brick ovens that are built around a large metal barrel. These ovens can be heated up very quickly and are more energy efficient than some dome ovens. This oven type is an excellent choice for hobbyists who want to be able to cook foods quickly.  These ovens are usually sold in kits that include a firebox and a large metal barrel. These kits usually have to be purchased online and can be expensive to ship.
Find brick oven plans. Consider the size of your oven. Choose a dome oven plan. Consider a barrel oven plan.