Domino support film rack

The EMS Domino rack is "U" shaped and made from an aircraft alloy sheet stock with serial perforations; thermally bonded space-age copolymer; 5mm diameter holes, 28 holes per rack. The formvar film cast on the rack will stretch across a series of smooth edged holes forming a flat, wrinkle free film that is ready for grid mounting. The Domino Rack allows the sections within the slot to dry flat and wrinkle free; it reduces the film and section contamination to negligible levels.