A system for shaping glass or metal sheets or panels for use in solar collectors or microwave antennae may include an oven and an adjustable mold. The adjustable mold may comprise a molding surface located within the oven. The molding surface may be coupled to position actuators located outside of the oven via coupling elements. A sheet or panel may be placed in the oven and heated until the sheet or panel softens and takes the shape of the molding surface. The molding surface may be adjusted to achieve different shapes for glass or metal sheets or panels.