North Star 18" Porta Roller Slab Roller Mason FiringThe tile displayed is the

FiringThe tile displayed is the final fired result at cone 5

Because of the back pressure generated by a large amount of clay being forced through a small orifice

borax has been shown to improve the fit of glaze on greenware and bisque

low expansion plaster for case molds

North Star 18" Porta Roller Slab Roller Mason FiringThe tile displayed is theThe PortaRoller was designed for ceramic arts teachers who are moving from classroom to classroom and for studio potters who need a fully functional slab roller but have limited space. The PortaRoller has two rollers, 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