Limestone and Bone Ash Additions to Sandstone Clay
These are two batches of test tiles with limestone and bone ash for the flux. Because calcium can make a very narrow firing range, I mixed two batches to fire on my middle shelf and …
Category: Local Materials
Test Results for Nepheline Syenite Additions to Sandstone Clay
For the previous post on this clay https://daylenes.com/2021/07/27/test-the-sandstone-clay/ I tested each batch only once. For better accuracy, do multiple tests. However, this tells me that I need to add more Neph Sye than I like. …
More Testing on the Sandstone Clay
The Sandstone clay is a sandy Clay that I dig right next to my house. Previous tests have shown that I need 14-15% added Nepheline Syenite to flux it down to cone 6. That’s more …
Yet Another Blue…
You remember my last blue glaze that blistered at cone 6? Well I had a big batch of it mixed up and a couple of batches of older glazes that were low in the bucket …
Destroying the Plasticity of Clay
Why would you want to destroy the plasticity of a clay? To eliminate cracking when drying in either a glaze or a clay body. This was the result of trying to destroy the plasticity without …
You Can’t Guess with Wild Materials
I never would have guessed, from the amount of sand in this body, that it would craze. Never in my wildest dreams and yet, here we are. This is my latest dug clay and one …
A Local Material in Place of Bought Silica
This is a material I found on one of my clay hunts. Right out of the ground, it would stick together in a ball, but not roll a coil unless it was very wet. As …