Stonewares dry better than porcelains


Wednesday 9th April 2014

The plastic porcelain has 6% drying shrinkage, the coarse stoneware has 7%. They dried side-by-side. The latter has no cracking, the former has some cracking on all handles or bases (the lower handle is completely separated from the base on this one). Why: The range of particle sizes in the stoneware impart green strength. The particles and pores also terminate micro-cracks.

Pages that reference this post in the Digitalfire Reference Library:

Drying Crack, Green Strength, Particle Size Distribution, Firing Shrinkage, Drying Shrinkage, Clay Cracking During Drying


This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.