Ravenscrag Cone 10R Whiting Base| Code | GR10-B |
| Modification Date | 2011-08-05 12:24:40 |
| Member of Group | RV10 |
| Description | Cone 10 Reduction Glaze |
Recipe| Material | Amount | Units | +/- | *Stat |
| Ravenscrag Slip | 90.00 | kg | | |
| Whiting | 10.00 | kg | | |
| | 100.00 | |
Firing Schedule
| Rate (C) | Temp (C) | Hold (Min) | Step | | ~10 pilots | 100 | 0 | 1 | | 50 | 550 | 0 | 2 | | 100 | 980 | 0 | 3 | | 50 | 1300 | 0 | 4 | | 0 | 1300 | 30 | 5 | | Freefall | 30 | | 6 |
Notes10% whiting addition is shown on right side of bowls.
1-80
Mechanisms
Body Plasticity - All Bodies Ball clay is the main plastic material used in clay bodies of all types. It is much more plastic than kaolin but also has much higher dry shrinkage and higher iron content. A typical white high temperature stoneware is often about 25% each of kaolin, ball clay, feldspar and silica. Glaze Suspender - General Ball clay is a fine particled clay that is universally used in glazes for suspension. If 15-20% is present no other suspender should be needed.
Out Bound Links
- (Hazards)
Ball Clay
Hazards of using ball clays in ceramics. - (Hazards)
Dioxins in Clays
DIOXINS in Clays used in ceramics, what are the da... - (Typecodes)
1: GNM - Generic Material
- (Typecodes)
1: BLC - Ball Clay
- (MDT)
Crystal Glazes
These materials are specially defined for makers o... - (MDT)
UK
We are working on this database and would apprecia... - (MDT)
Ron Roy
This is the traditional Ron Roy materials file. He... - (MDT)
North America
The decision about what materials to include in th... - (Materials)
Kaolin - Al2O3.2SiO2 or Al2Si2O5(OH)4 - Hydrated alumina silicate, Pure clay mineral
China Clay
- (Glossary)
Deflocculate, deflocculation, deflocculant
The process of making a clay slurry that would oth... - (Glossary)
Stoneware
A high fired (about 1150C+) ceramic clay that is s... - (Tests)
SHAB - Shrinkage/Absorption
- (Tests)
SIEV - Sieve Analysis 35-325 Wet
- (MDT)
New Zealand
We are working on this database and would apprecia... - (MDT)
Latin and South America
Latin America and South America. We are working on... - (MDT)
Generic
Generic for building a completely custom MDT. Only... - (MDT)
Europe
Countries of Eastern Europe and former Soviet Unio... - (MDT)
Australia
We are working on this database and would apprecia... - (MDT)
Asia
All of Asia including Turkey, Russia, Indosnesia, ... - (MDT)
Africa
All of continental Africa. We are working on this ...
In Bound Links
Pictures
OM#4 ball clay test bars fired from cone 4-10 oxidation and cone 10 reduction. The yellow on bar 12 is iron stained soluble salts.
Ball clay and kaolin test bars side-by-side fired from cone 9-11 oxidation and 10 reduction.
Test used to reveal the effect of soluble salts in a ball clay on the fired body and under the glaze
This 1000 ml 24 hour sedimentation test compares Plainsman A2 ball clay ground to 10 mesh (left) with one that same material ball milled (right). There is no sediment in the milled material.
Plainsman A2 ball clay DFAC drying disk test showing the incredible dry shrinkage of a typical ball clay and the stress it can put the clay under during drying.
Large particle kaolin (left) and small-particle ball clay (right) DFAC drying disks demonstrate the dramatic difference in drying shrinkage and performance between these two extremes.
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