Donatos Pizza founder Jim Grote is the lead investor in the development of a 3-D printer that can build pizzas with dough, sauce and cheese. Columbus startup BeeHex has raised 1 million dollars to fund the development of a commercial prototype of its Chef 3D machine. BeeHex is also developing a conveyor oven and an order topping robot as pieces of what the company hopes will be a nearly autonomous solution for customers. BeeHex launched its system last year. The machines, which are not yet available for purchase, can print a pizza in about one minute.