In one embodiment, a fixture for supporting a body in an oven includes a plurality of support ribs to support the body, and a support element to support and connect the plurality of support ribs. Each support rib has a length, a width, a thickness, and a first end. The length extends from the support element to the first end, and the width extends perpendicular to the length. The length varies across the width of at least one support rib. In another embodiment, a fixture for supporting a body in an oven includes a plurality of connected support ribs to support the body. Each support rib is spaced from at least one other support rib. The length differs for at least a first support rib of the plurality of support ribs with respect to at least a second support rib of the plurality of support ribs.