11.4 Cubic Feet. The Workhorse for Production Studios.
If you've outgrown your current kiln, the Jen-Ken AF JK Squared 29" is built for the next stage. With a 27" wide by 29" deep chamber and 11.4 cubic feet of capacity, this is one of the largest single phase electric kilns you can buy. Production studios, working potters, classroom programs, and serious sculptors can fire full loads of work in a single firing instead of splitting them into multiple runs.
Built with hand selected 2300°F refractory brick, the JK Squared 29" has better heat insulation than a lot of kilns at its size and price. That means more efficient firings, more even temperatures across a big chamber, and less stress on your elements. Real construction quality that translates to years of extra life.
The AF JK Squared 29" fires up to 2300°F (Cone 8), which covers earthenware, low and mid fire stoneware, glaze work, and your everyday bisque firings. Runs on standard 240V at 45 amps with a NEMA 6-50 plug, 10,800 watts. No three phase electrical needed, which keeps installation simple.
One thing worth knowing: at 250 pounds product weight, this kiln is lighter than most kilns at this capacity. That makes setup and any future repositioning more manageable, especially if you don't have a forklift in your studio.
Included with every order
A heavy duty stand sized for this kiln, the full operator manual, a 2 year limited warranty through Jen-Ken, and free freight shipping to the US Lower 48.
Who Is This Kiln For?
The AF JK Squared 29" is built for a specific kind of studio. Here's how to tell if that's you.
✓ Production studios running weekly firings
11.4 cu ft means you fire one big load instead of two smaller ones. That's hours of your week back, plus more consistent results across each batch of work.
✓ Classroom programs and community art centers
Fire an entire class's worth of student pieces in one go. The deep chamber means you can stack shelves for a lot of smaller work, or load larger projects without compromising.
✓ Studios upgrading from a smaller kiln
If you've been splitting big firings or turning down work that wouldn't fit, this is the kind of size that genuinely opens up what you can make and sell.
✓ Potters who want size without three phase power
A lot of large capacity kilns require three phase electrical. The JK Squared 29" runs on a single phase 240V NEMA 6-50 plug, so most studio electrical can handle it.
The AF JK Squared 29" ships standard with the Orton AutoFire 3 Key controller, which has all the cone firing schedules built in plus 6 user programs for custom firings. For more flexibility, upgrade at checkout to the AutoFire 12 Key, the touchscreen AutoFire Slide, or the TAP Smart Controller with Wi Fi for phone or tablet control. For a production kiln of this size, the upgraded controllers genuinely pay off in workflow improvements over time.