|Monthly Tech-Tip |
Modified: 2015-12-07 14:48:11
A cone 6 base clear glaze recipe developed by deriving a recipe from a formula taken as an average of limit formulas
|Ferro Frit 3134||25.00|
More information is available in the articles section at the Digitalfire Reference Database.
G1214W tangerine glaze from Lilly Ann HumeTap picture for full size
G1214W pastel orange glaze from Lilly Ann HumeTap picture for full size
G1214W light green glaze from Lilly Ann HumeTap picture for full size
G1214W light blue from Lilly Ann HumeTap picture for full size
G1214W dark blue glaze from Lilly Ann Hume
Example of 5% black iron oxide (left), red iron oxide (center) and yellow iron oxide (right) added to G1214W glaze, sieved to 100 mesh and fired to cone 8. The black is slightly darker, the yellow has no color? Do you know why?
G1214M Cone 5-7 20x5 glossy transparent glaze
This is a base transparent glaze recipe developed for cone 6. It is known as the 20x5 or 20 by 5 recipe. It is a simple 5 material at 20% each mix and it makes a good home base from which to rationalize adjustments.
Bringing Out the Big Guns in Craze Control: MgO (G1215U)
MgO is the secret weapon of craze control. If your application can tolerate it you can create a cone 6 glaze of very low thermal expansion that is very resistant to crazing.
G1214Z Cone 6 matte glaze
This glaze was developed using the 1214W glossy as a starting point. This article overviews the types of matte glazes and rationalizes the method used to make this one.
G1214W Cone 6 transparent glaze
The process we used to improve the 20x5 base cone 6 glaze recipe
G1215U - Low Expansion Glossy Clear Cone 6
A recipe sourcing high MgO (from Ferro Frit 3249) to produce a low expansion glass resistant to crazing on lower silica porcelains.
G1214M - Original Cone 6 Base Glossy Glaze
A recipe developed by Tony Hansen in the 1980s. Its was popular because of the simplicity of the recipe and how well it worked with chrome-tin stains.
GR6-B - Ravenscrag Cone 6 Variegated Light Glossy Blue
Plainsman Cone 6 Ravenscrag Slip based glaze. It can be found among others at http://ravenscrag.com.
Transparent Glaze Recipe
Transparent recipes can be difficult to develop because entrained bubbles, crystals and crazing are not hidden by color and opacity. In addition, they must be well melted to give good results. Generally transparent recipes are sought after as liner glazes or bases to which to add opacifiers and colors. Typically work is required to match a transparent glaze to a specific clay body.
INSIGHT Glaze Recipes
These are sample recipes included with INSIGHT software.
Medium Temperature Glaze Recipes
Normally fired at cone 5-7 in electric kilns.
Plainsman Cone 6 Electric Standard
Used in the Plainsman lab to fire clay test bars in our small kilns
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|By Tony Hansen|
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