The Gandy super frame eliminates the danger of sagging or spreading that can render a less sturdy table impossible to level and unplayable in a few short years. The solid hardwood slate framing extends over the platform, cross members and center beam. This provides exceptionally solid support for the slate, eliminating any possibility of the slate bending out of shape. Some manufacturers have begun offering center beam options as a marketing ploy without putting framing down the center of the slate. This obviates much of the advantage of having a center beam.
Most manufacturers use a thin sheet of plywood as a platform for the slate.
There isn't enough thickness in the cabinet to do that. Instead, they glue or staple two blocks of wood to the inside of the cabinet wall and run a bolt through the wooden blocks and cross member to keep the crossmember in place. A key feature is how the corners of the frame are joined together and how the legs are mounted. Both types of legs are adjusted into position through a slotted opening, then secured by tightening against a domed washer with serrated edges. The cross section displayed below demonstrates the superiority of Gandy construction in dramatic fashion.