what is best used to make a solar oven

A solar oven harnesses sunlight to cook food, so the best materials reflect, absorb, and retain heat efficiently. The most effective designs use a combination of reflective surfaces, insulation, and a dark-colored cooking chamber. Aluminum foil or mirrored panels work well for reflecting sunlight into the oven, while cardboard or wood provides lightweight structure and basic insulation. For better heat retention, materials like fiberglass, wool, or even crumpled newspaper can be added to the walls.

The cooking chamber itself should be dark—black paint or a black pot helps absorb heat. A clear glass or plastic lid traps heat inside, creating a greenhouse effect. While simple materials like pizza boxes can work for basic models, sturdier options like metal or tempered glass improve durability and performance. The key is balancing affordability with efficiency to maximize heat capture and retention.