Can you apply a clear glaze over these? Since they are already glossy alone?

Underglaze is not glossy by itself. You paint it on green ware then fire it to the "bisque" temperature for the clay you are using. Then you apply an "over glaze", usually clear, either matte or glossy and fire it a second time, according to the temp necessary for the over glaze. This is usually done on "low fire" pottery, at cones 05 to 06. But certain underglaze colors will high fire (usually cone 5 or 6). Check the label. You would need a high fire clear overglaze, then. Hope that helps!

What is the firing range for these under glazes?

Thank you for your question. These glazes have a wide variety from 06-6.

Rookie question: painting ceramics using color me mine delivery service (hello coronavirus isolation). i want my own paints on hand; can i use these?

These are under glazes. Paint 3 coats. You can paint them on green ware or on bisque. Then after bisque firing, they will need a glaze and final firing. If you paint these on bisque, you can add a clear glaze after the under glazes and fire them for final glaze firing.

Yes they are liquid and seem to flow quite well.

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Sax True Flow Underglaze Set, 2 Ounces, Acrylic, Assorted Colors, Set of 12 - 1371407

Sax True Flow Underglaze Set, 2 Ounces, Acrylic, Assorted Colors, Set of 12 - 1371407

Product ID: 3524189

Details

Brand
Sax
Color
Assorted
Finish Type
Matte
Item Volume
2 fluid ounces
Paint Type
Acrylic
Size
2 Fl Oz (Pack

🎨12 vibrant acrylic colors

🔥Fires at cone 06-6 for durability

🛡️Non-toxic & lead-free safety

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Description

🎨 Ignite your ceramic artistry with bold colors that fire your passion!

WIDE FIRING RANGE - Compatible with cone 06-6, perfect for both greenware and bisque firing.
SAFE ECO FRIENDLY - Non-toxic, lead-free formula ensures worry-free creativity for professionals and hobbyists alike.
CUSTOM FINISH FLEXIBILITY - Choose glossy shine with transparent glaze or a trendy matte effect by firing uncovered.
CONVENIENT WIDE MOUTH JARS - Easy access and smooth application with user-friendly packaging designed for busy creators.
VIBRANT READY TO USE COLORS - Concentrated opaque acrylics that bring your ceramics to life instantly.

The Sax True Flow Underglaze Set offers 12 concentrated, opaque acrylic colors in 2-ounce wide-mouth jars, designed for professional and hobbyist ceramic artists. Fireable at cone 06-6, these non-toxic, lead-free underglazes provide versatile finishes—glossy when glazed or matte when fired uncovered—perfect for greenware or bisque surfaces. Trusted for safety and ease, this set elevates your pottery with vibrant, durable color and creative freedom.

Specifications

ASIN	B007VEQJ76
ASIN	B007VEQJ76
Age Range Description	Adult
Best Sellers Rank	#264,782 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #489 in Ceramics Glazes
Brand Name	Sax
Color	Assorted Colors
Color Code	Assorted Colors
Container Type	Wide Mouth Jar
Coverage	Standard
Customer Reviews	4.4 4.4 out of 5 stars (271)
Date First Available	June 11, 2012
Finish Type	Matte
Global Trade Identification Number	00885634282943
Is Waterproof	False
Item Form	Liquid
Item Type Name	True Flow Underglaze Set
Item Volume	2 fluid ounces
Item model number	1371407
Manufacturer	School Specialty
Manufacturer	School Specialty
Model Name	Sax
Model Number	1371407
Paint Type	Acrylic
Part Number	1371407
Product Dimensions	9 x 6.5 x 2.75 inches; 2.73 pounds
Size	2 Fl Oz (Pack of 12)
Special Features	Non Toxic
Specific Uses For Product	Interior
Surface Recommendation	Ceramic
UPC	885634282943
Unit Count	24 Fluid Ounces
Warranty Description	2 YEAR
Water Resistance Level	Not Water Resistant

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$135.31

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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