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 …
Tag: clay body tests
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 …
Testing the Sandstone Clay
This is a clay that is right next to my house. Super easy to access and easy to process. I first located this clay last year and did some initial tests then got side tracked …
Test Bowls
A couple of test bowls. Both of these had 6.5% added Neph Sye to flux the body down to cone 6. The one on the left is my newest dig location with some of the …
This is what happiness looks like.
This will be about 150 lbs of moist clay after it dewaters a bit. I mixed this up today with my wild clay reclaim and 15% of a local low fire clay. I still need …
Wild/Local Clay Tests
I goofed with this load of bisque. I didn’t make sure my thermocouple was completely inserted (it wasn’t even all the way though the kiln wall). The load was badly overfired (for bisque). The test …
Limestone tests continued…
This is 100% local to me body. Still not quite sure if the limestone will work as a flux or just be a disaster. I rolled out all my test tiles yesterday morning for shrinkage/firing …
Limestone tests
When I got my analysis back for the SW AR marl (https://glazy.org/materials/96006) it got me thinking. If this material works why not limestone? The marl has less loi but only about 5%. Limestone would have …
Wild/Native Clay Tests–Moon Clay
I haven’t tested any new clays for a while, just different tests on clays I can find around my house. This clay comes from a small community in the far Southeast corner of Oklahoma called …