A Deep Glass Kiln for Slumping Big Bowls and Tall Forms
The Jen-Ken AFG JK Squared 15" is built for one specific thing most glass fusing kilns can't handle: deep slumping. The interior is 27" wide by 27" long by 15" deep, with enough vertical room to slump a 13" deep bowl or a 13" flower former mold in the same kiln you fuse flat work in. If you've been wanting to make larger bowls, deeper drape pieces, or sculptural forms but your current kiln didn't have the height, this is the kiln that finally lets you do it.
What makes this kiln especially versatile is that it's top and side firing. The top elements give your glass the radiant heat that fusing and slumping need from above, while the side elements help bring the kiln to temperature evenly and support deeper draping work. Most glass kilns commit to one or the other. This one does both.
With 6 cubic feet of capacity, the JK Squared 15" is a serious working size for glass artists. Big enough for full sized platters, deep bowls, sculptural pieces, and large fused work. Runs on standard 240V at 45 amps with a NEMA 6-50 plug, 10,800 watts. Fires up to 1700°F, plenty of headroom for full fuse, tack fuse, slumping, draping, and casting.
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 AFG JK Squared 15" is built for a specific kind of glass artist. Here's how to tell if that's you.
✓ Glass artists slumping deep bowls and vessels
15" of vertical depth means you can slump a 13" deep bowl or large flower former in the same kiln you fuse flat work in. No need to commit to a second kiln for deeper pieces.
✓ Artists working in both fusing and slumping
Top and side firing means this kiln does both disciplines well. Fuse flat platters with the top elements, slump deep pieces with the side elements supporting from the chamber walls.
✓ Production studios with deep mold work
If your work involves deep molds, large form draping, or sculptural casting at a working studio scale, the 6 cu ft capacity plus the 15" depth gives you room for serious production.
✓ Glass artists scaling up from a flat fusing kiln
If you started with a shallow fusing kiln and you're ready to take on dimensional work, this is the natural next step that opens up the slump and drape work you couldn't do before.
The AFG JK Squared 15" ships standard with the Orton AutoFire 12 Key, which gives you reliable programmable firings with up to 4 custom programs. For more storage and remote control, upgrade at checkout to the AutoFire Slide touchscreen with 35 saved schedules, or the TAP Smart Controller with Wi Fi for phone or tablet control. For long slumping schedules, the TAP's remote control is genuinely useful since you can check status from anywhere.
Key Features
- 15" of vertical depth for slumping 13" deep bowls, large flower formers, and deep mold work
- Top and side firing, the rare combination that handles both flat fusing and deep slumping well
- 27" W x 27" L x 15" D firing chamber with 6 cubic feet of working space
- Fires up to 1700°F, ideal for full fuse, tack fuse, slumping, draping, and casting
- 240V / 45 amp setup with NEMA 6-50 plug, 10,800 watts
- Orton AutoFire 12 Key controller standard, upgradeable at checkout to AutoFire Slide or TAP Smart
- Optional Solid State Relay (SSR) upgrade for quieter operation, tighter temperature control, and longer element life
- Free heavy duty stand and manual included with every kiln
- 2 year limited warranty from Jen-Ken plus free freight shipping to the US Lower 48
Specifications
| Model | Jen-Ken AFG JK Squared 15" |
| Kiln Type | Glass Kiln (Top and Side Firing) |
| Inside Dimensions | 27" W x 27" L x 15" D |
| Volume | 6 cu ft |
| Maximum Temperature | 1700°F |
| Voltage | 240V |
| Amps | 45 |
| Watts | 10,800 |
| Plug Type | NEMA 6-50 |
| Firing Style | Top and Side Firing |
| Product Weight | 250 lbs |
| Shipping Weight | 350 lbs |
| Warranty | 2 Year Limited (Jen-Ken) |
Got deep slumping work you've been wanting to take on?
Give us a call. We'll talk through your molds, the depth of work you want to make, and your studio setup, and help you figure out if this is the right kiln.
📞 (801) 839-5882Monday to Friday, 9AM to 5PM MST