Pottery and Ceramics Glaze
Oil Spot Glaze Recipe
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There are many types of glazes, some recipes for oil spot glazes, just in case you want to mix your own. but the oil spot glaze will give you a very different and some what pretty design for your pottery or ceramic.
In just about any pottery or ceramic shop there will be many different types of glazes that are ready made and I'm sure you would be able to find one or two differant oil spot glazes.
Below are some recipes for oil spot glazes, just in case you want to mix your own.
When you are mixing, cobalt carbonate gives a deep black base color to the glaze.
It can be omitted to produce a traditional dark brown glaze with light brown spots.
You will need to add flux to compensate for the loss of fluxing action from the 5% cobalt carbonate that you remove.
The two glazes recipes below were tested for leaching and both were considered acceptable for dinner ware.
The result for cobalt was 0.08 mg/L and iron was 0.25 mg/L.
Candace Black GlazeFire to Cone 10 or 11
Gloss Oil Spot Glaze # 1Fire to Cone 10 or 11
This recipe yields a slightly glossy oil spot in oxidation and is also an excellent black glaze in reduction.
Oil Spot Glaze # 2Fire to Cone 10 or 11
This glaze is a bit drier and stiffer than the others and yields smaller oil spots.
Oil Spot Glaze # 3Fire to Cone 10 or 11
Slightly less distinct spotting, with some iron spangles.
Oil Spot Glaze # 4Fire to Cone 10 or 11)
This glaze can produce large oil spots that will run if too thick.
The glaze is the result of adding 8% more kaolin to the original Candace Black recipe.
The result was a bit stiff and creates a dry glaze.
Then adding 15% more silica and 4% more kaolin to the original Candace Black recipe made it a bit too fluid.
But, mixing the two together you have the number 4 glaze above.
If you find a glaze that you like, you can add or lessen amounts of the ingredients just to see what you come up with.
Be sure and keep notes when mixing just in case you come up with a masterpiece glaze recipe!
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