Can you bisque fire this at cone 04?

1. UPSALA – Can you bisque fire this at cone 04? The recommended bisque firing temperature according to our technical recommendations on our website is 1000ºC which is equivalent to cone 06 (1855ºF). Nevertheless, a bisque firing up to cone 04 is still ok, especially for our porcelains and stoneware. It’s important to know that with higher bisque firing temperatures, the object becomes harder and less porous, but it might be more difficult to apply the glazes as the liquid cannot easily enter the pores.

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SIO-2 Upsala Blue High Fire Porcelain Clay, 11 lb (Cone 5-6) Natural Modeling Pottery Clay for Wheel Throwing & Hand Building

SIO-2 Upsala Blue High Fire Porcelain Clay, 11 lb (Cone 5-6) Natural Modeling Pottery Clay for Wheel Throwing & Hand Building

Product ID: 529186820

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Details

Brand
SIO-2
Color
Upsala Blue
Age Range (Description)
Adult
Material
Natural Clay
Item Weight
11 Pounds
Number of Items
1

🎨Vibrant Upsala Blue color

🔥Cone 6-7 high fire range

⚙️Smooth, plastic, and stable texture

Description

🎨 Elevate your craft with the timeless blue that sparks creativity!

SAFE CERTIFIED - Non-toxic, AP-certified clay trusted by pros and hobbyists since 1874.
STRIKING BLUE BASE - Unique cobalt Upsala Blue clay enhances and elevates your glaze finishes.
FIRES STRONG LASTS LONG - High fire range (1200ºC-1240ºC) ensures durable, professional-grade ceramics.
VERSATILE CRAFTING POWER - Perfectly balanced for wheel throwing, hand-building, and detailed modeling.
CONSISTENT QUALITY EVERY TIME - Rigorously tested for smoothness and plasticity to guarantee flawless results.

SIO-2 Upsala Blue High Fire Porcelain Clay is a premium, non-toxic natural clay with a firing range of Cone 6-7 (1200ºC-1240ºC). Renowned for its vibrant cobalt blue color, smooth texture, and versatility, it is ideal for wheel throwing, hand-building, and modeling. Manufactured in Spain since 1874, this clay is rigorously tested to meet professional standards and enhances glaze finishes with its unique blue base.

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