Abstract: A flexible, relatively lightweight workpiece support tray includes a plurality of spacers juxtaposed between a plurality of lateral I-beams, the I-beams being held together through a plurality of rods. Each of the lateral I-beams has a recess for receiving a tab on each side of the spacers. Each end of the rods is provided with a split ring welded thereon to removably retain the assembly together. A pair of shoes is located on the bottom intended side of the tray, and a puller/pusher bar is attached to each end of the shoe for engaging the drive mechanism of the furnace. The invention uses articulating attachments, including includes a slide connector and T-connector spot welded into place, for joining one tray to another to obtain a floating feature.