220 Best Pottery Glazing Techniques and Ideas

Understanding the Difference Between Cone 6 and Cone 10 Firing

Students ask me all the time whether they should fire their pots at cone 6 or cone 10, especially when they are setting up a home pottery studio or trying to learn pottery online through endless Pinterest boards and video clips. The kiln room holds a certain kind of magic, but it also demands a healthy respect for physics and chemistry. In all my years at the wheel, working from my early days in academia to pieces residing in the Smithsonian American Art Museum collection, I have seen potters chase numbers without understanding the soul of the heat. The main difference between cone 6 and cone 10 firing is the temperature: cone 10 reaches roaring temperatures past 2400°F, while cone 6 matures around 2200°F. But temperature is only the surface metric. The real story lies in the vitrification of the clay body, the dance of the glaze minerals, and how your pots will stand up to decades of daily use.

The Science Behind Cone 6 and Cone 10 Firing

I learned this the hard way, decades ago, when a kiln miscalculation turned a batch of high-fire porcelain into a slumped, glassy puddle that fused itself permanently to the kiln shelf. Clay has a way of teaching you humility through destruction. The most immediate difference between these two thermal peaks is the thermal summit itself—cone 6 fires around 2200°F, whereas cone 10 pushes past 2400°F. At cone 10, particularly in a reduction atmosphere where oxygen is starved from the kiln, iron oxide in the clay body and glazes undergoes a dramatic transformation, creating earthy, rich, variable surfaces that simply cannot be replicated in an electric oxidation kiln at lower temperatures. Cone 10 firing is ideal for creating durable, high-fire stoneware and porcelain pieces that can withstand heavy, lifelong use. On the other hand, cone 6 firing is better suited for brighter color palettes, using stains and certain commercial glazes that burn out or run under the brutal heat of a cone 10 environment.

Choosing the Right Firing Method for Your Piece

Whether you are crafting functional tableware in your garage or exploring advanced pottery techniques for sculptural forms, your choice of firing range dictates every decision you make from the bag of clay to the final glaze application. When you sit down to throw, the tactile feedback of the clay changes depending on whether it is formulated for intermediate or high temperatures. Cone 6 bodies often contain fluxes that help the clay mature earlier, making them accessible and reliable for potters working from home without heavy industrial electrical hookups. Cone 10 bodies, packed with raw grog and dense ball clays, demand a stronger hand during centering and a deeper appreciation for how the piece will dry and shrink. If you want to explore pottery for beginners without wrestling with the extreme demands of industrial-level gas kilns, starting with a dependable cone 6 schedule allows you to focus on form, trimming, and surface decoration like dipping, pouring, or trailing your glazes with confidence.

Putting It All Together in the Studio

Whether you are setting up your own space or taking time to learn pottery online, bringing intention to your firing schedule changes everything. Try these practical approaches in your studio this week: test your favorite glazes on both cone 6 and cone 10 test tiles to observe how the color break shifts under different thermal summits, and always ensure your bisqueware is properly cleaned with silicon carbide paper to remove any stray dust before glazing. Avoid the common trap of thinking one cone is inherently superior to the other; they are simply different instruments in the orchestra. Stephen Jepson pottery has always embraced the honest marriage of form and utility, regardless of the peak temperature on the pyrometric cone. The wheel doesn't care about your age or your experience — it only asks for your full attention and a willingness to listen to the material. If you are ready to dive deeper into the craft and master these studio fundamentals alongside me, explore the complete step-by-step video library available at jepsonpotteryvideos.com.

Photo by Yan Krukau • Published October 07, 2026