MKM Tools RL105 6 cm Big Bumps Design Medium Fire -Laguna Clays It is an alternative to

It is an alternative to the long popular sodium silicate

Petalite has close to 0% thermal expansion

By itself it does not melt as well as feldspars but it is popular in glazes for its low shrinkage and minimal contribution to defects

Provides the greatest hardness

MKM Tools RL105 6 cm Big Bumps Design Medium Fire -Laguna Clays It is an alternative toRL Large Handle Rollers have a rolling design face that is 6 cm (2. 4 inch) across. The Large Handle Rollers are designed to roll across clay or other soft media to create patterns along straight lines, curvy lines, and borders. For best results, we recommend using the RH 1 Handle with the RL Roller.