Can you use these on glass? What are the actual firing temperatures?

High fire. Horrible stuff of mediocre quality ar best. The colors are awful, but black. That seems to be pretty good, and that is damned by faint praise

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001079 Underglaze School Pack, 6-Pack, 16 oz, Multicolor

Product ID: 53353058

🎨6 vibrant opaque colors

🔥Wide firing range cone 06-10

🛡️Lead-free & dinnerware safe

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Rp5359536

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Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎨 Ignite your ceramic creativity with Speedball’s vibrant underglaze power!

OPAQUE COVERAGE - Achieve rich, solid colors with just 2-3 liberal coats—perfect for detailed brushwork and layering.
CREATIVE FREEDOM - Ideal for techniques like graffito, watercolor effects, mishima, and free brush painting to elevate your ceramic art.
SAFE FOR EVERYDAY USE - Lead-free formula ensures your finished pieces are dinnerware safe when fired as directed.
VERSATILE FIRING RANGE - Performs flawlessly from cone 06 up to cone 10, adapting to your kiln’s needs.
VIBRANT 6 COLOR PALETTE - Includes white, yellow, royal blue, black, orange, and red for limitless creative combos.

Speedball 001079 Underglaze School Pack offers six 16 oz jars of opaque, lead-free underglazes in a versatile firing range (cone 06-10). Designed for detailed painting and multiple decorative techniques, this set delivers vibrant, dinnerware-safe colors that bring professional-quality finishes to your ceramic projects.

Specifications

ASIN	B01JI1RTSW
Assembly required	No
Batteries required	No
Best Sellers Rank	#95,704 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #179 in Ceramics Glazes
Customer Reviews	4.0 4.0 out of 5 stars (70)
Import	Made in US
Included Components	(6) pint bottles
Item Weight	1 pounds
Item model number	001079
Manufacturer	Speedball Art Products
Product Dimensions	8.31 x 5.69 x 8.5 inches
Volume	4536 Milliliters

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