North Star 18" Porta Roller Slab Roller Mason low expansion plaster for case

low expansion plaster for case molds

The screen size is 12 1/2" H x 18" long

Total shrinkage at Cone 10: 15

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

North Star 18" Porta Roller Slab Roller Mason low expansion plaster for caseThe 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