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Bring Your Creations to Life
Trusted by Today’s Most Well Known Artists
World-renowned and up-coming artists alike are using Speedball Underglazes exclusively due to their incredible performance, value and versatility.
Ideal for detailed painting, sgraffito decoration, watercolor effects, free brush painting, screen printing and mashima decoration, the opaque underglazes are designed to perform in a wide firing range, Cone 05 – 6, and have been successfully fired to Cone 10.
Create Depth & Character
Speedball Underglazes can be used to create designs and patterns that will come through the glaze covering them, allowing for more visual depth and character. Although they are often used under clear glazes, they can also be used under other, generally light-colored, transparent glazes.
In the Studio
Speedball Underglazes can be applied to greenware and bisqueware. Colors will not move or flow during firing. For best results, apply 3 liberal coats and use with Speedball Earthenware or Stoneware Clear Glaze.
All colors are dinnerware safe when used and fired as directed, are lead-free and carry the AP Seal.
AMY K.
Reviewed in the United States on April 30, 2024
The description of the item on Amazon said each jar contained 16oz of underglaze. The jars that came were marked as containing 16 oz but the amount of underglaze in each jar was only 12 oz--I did measure each one. This clearly was the way the jars came from the Speedball company, not an Amazon issue, but Amazon may want Speedball to verify that the 16 oz jars only contain 12 oz of underglaze.
adriana cousillas
Reviewed in Mexico on September 11, 2023
Son de consistencia muy arenosas, pero eso se quita al hornear .
Nerrissa
Reviewed in the United States on June 2, 2023
I’ve been purchasing and using speedball underglazes for over a year now. It’s a great brand for the price. They usually arrive thick, so I do have to add some water to them so I can brush them on evenly. The colors are bright. Just like most underglazes, even amaco and mayco, the purples and blues kinda fade when a clear glaze is applied (even zinc free clear). I haven’t found a brand yet where the blues and purples stay bright. Can’t wait to use these colors because I normally buy the school set with the primary and secondary colors.
Deana Novak
Reviewed in the United States on March 8, 2022
This is the worst glaze ever. The consistency was impossible to improve and after testing it it left pieces lumpy and flakes off in giant patches. It has effectively ruined 6 pieces of pottery. Don’t buy this! Save your money and go purchase some decent glaze. The first box also came super damaged with a half empty container. This box did too, but I was planning on just taking the loss. It’s all going back today for a refund!
Hannah L.
Reviewed in the United States on October 29, 2021
I’ve used and love these glazes in the past but this box is a gross mess. Everything is open. Everything has leaked. I want a replacement but Amazon says I have to return these and I don’t even know how I could ship these back. Half the lids are cracked.
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