Their current design, the Sun Dome Solar Oven and Cooker, is based on purchasing materials for 160 or more solar cookers. This allows anyone manufacturing this solar ovens to obtain price breaks for bulk purchase of materials. Assembling the cooker is done using good quality hand tools. They use Graniteware 517 pots, which do not nest with the other components. All the other components do nest together. The ovens use a polycarbonate dome that sits on a reflector assemble. The reflector tilts to the sun allowing one to cook from mid-morning to mid-afternoon.