*SPECIAL ORDER, PREPAYMENT REQUIRED*
Super machines are much heavier. The table is 6' long; rollers are 4" in
diameter and 2.5 times as heavy as the ones used in the standard machine. The 4.5:1 gear reduction between the handle and the bottom roller makes it much easier to slab a large wad of clay in a single pass.
North Star Slab Rollers are made in two series: The Standard series used by hobby potters and students everywhere and the massive Super series, at home in industrial, institutional and production settings around the world.
All North Star machines have two rolls, much like the wringer of an old-fashioned washing machine. Both rolls have a small diamond pattern ("knurling") machined directly into the metal to grip the canvas. The bottom roll is turned by the handle, but cannot move vertically. As it turns, it drives the top roll through a train of gears.
Bodies and rolls are made of cast and carefully machined high-strength special alloy aluminum. Gears are made of the strongest material available for this application, nylon or steel. Bushings are nylon and the remaining parts (except plastic gear covers and knobs) are machined steel. Table frames are 14-gauge steel. Tabletops are of moisture-resistant Medex with a melamine surface. Metal surfaces are zinc plated or coated with a durable powder coat finish. Virtually no maintenance is required, and the simplicity of the design ensures that any repair ever needed will be quick and easy.