Liberty machinery is a stocking dealer of used Welding Platens. Inventory consists of, 5' x 5' x 7" thick Acorn and Weldsale style welding Platens. Liberty Machinery Company has a large inventory of, 10' x 10' x 7" thick Acorn Style and Weldsale style welding platens. Used Welding Platens and Welding Tables. T0165, tables, welding.