North Star 18" Porta Roller Slab Roller Mason It has a more diversified

It has a more diversified selection of fluxes than other feldspars but also has one of the highest silica contents

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

This kit is designed for eight sided top loading kilns with a firing chamber that is 18 inches in diameter and is 18 inches deep

Because it has such a low iron content

Super Lightweight

North Star 18" Porta Roller Slab Roller Mason It has a more diversifiedThe 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