One Kiln, Two Modes. Fire Ceramics to Cone 6, Fuse Glass at 1700°F, All in 11.45 Cubic Feet.
The Ceram-A-Glass Oval 18 is built for artists who refuse to pick a lane. If you work in both glass and ceramics, or if you're tired of buying two kilns to do two jobs, this is the kiln that handles both. The Ceram-A-Glass series is engineered with two firing modes built into a single kiln: Glass Mode for fusing, slumping, and draping, and Ceramic Mode for high-fire ceramic work. With a manual bypass (call us before ordering), this model can also push to 2300°F for cone 10.
The trick is how the elements are configured. In Glass Mode, the top elements deliver an even blast of heat across the shelf, exactly how a dedicated glass kiln should fire. The side coils help bring the chamber up to temperature but don't dominate the firing, so your glass heats from above the way it needs to. Top temperature in Glass Mode is 1700°F, which covers full fuse, tack fuse, slumping, and draping.
In Ceramic Mode, the kiln fires the way a ceramic kiln should, climbing to 2150°F for bisque firing and most mid-fire stoneware work. Need to fire cone 10? The optional manual bypass takes the kiln to 2300°F. Inquire before ordering so we can set this up correctly for you.
The chamber is huge: 24" x 40" x 18", giving you 11.45 cubic feet of working space. The oval shape and 18" of depth handle tall ceramic vessels, sculptural work, deep slumping molds, and full shelves of production pieces. Few kilns at this size can do both jobs well, and that's the whole point of this one.
Included with every order
Stationary stand built for the kiln's weight and shape, and the manual. Add the furniture kit at checkout for 8 half shelves, an assortment of 1"/2"/4"/6" posts, and shelf primer.
Who Is This Kiln For?
The Ceram-A-Glass Oval 18 is built for a specific kind of artist, and a specific kind of studio. Here's how to tell if that's you.
✓ Multi-discipline artists who work in glass AND ceramics
If you work in both materials, this is the kiln that finally stops the argument between buying a glass kiln, a ceramic kiln, or compromising on one that's just okay at both. Glass Mode fires like a glass kiln. Ceramic Mode fires like a ceramic kiln. You get both.
✓ Studios with limited space or limited budget
One kiln, one footprint, one outlet, one purchase. If you don't have room (or budget) for two large kilns but you do work in both materials, this is the practical solution.
✓ Teaching studios and community spaces
One kiln that supports both glass and ceramic curricula means more flexibility, more class offerings, and less equipment to maintain. 11.45 cu ft handles whole-class loads in either mode.
✓ Sculptors and mixed-media artists working at scale
18" of depth and the 24" x 40" oval footprint handle tall sculptural work, large slumped pieces, and ambitious mixed-material projects that need real room to fire.
For a kiln this size and this versatile, a few upgrades genuinely pay off. The Solid State Relay (SSR) gives you tighter temperature control, longer element life, and quieter cycling, which matters even more on a kiln cycling between firing modes. The Orton Vent Master downdraft vent is especially important here, since ceramic firings release toxic byproducts you don't want in your studio air. And the Lid Lifter is worth a serious look on a kiln this large.
Key Features
- Dual-mode firing, Glass Mode for fusing and slumping, Ceramic Mode for high-fire ceramic work
- 1700°F Glass Mode for full fuse, tack fuse, slumping, and draping
- 2150°F Ceramic Mode for bisque firing and mid-fire stoneware
- 2300°F with optional manual bypass, reach cone 10 for high-fire stoneware and porcelain (inquire before ordering)
- 24" x 40" x 18" oval interior with 11.45 cubic feet of working space
- Engineered element configuration, top elements drive even glass firing while side coils support ceramic temperatures
- 240V / 45 amp setup with NEMA 6-50 plug, 10,800 watts
- Multiple controller options at checkout, including the Orton AutoFire 12-Key, Orton AutoFire Slide touchscreen, and TAP Smart Touchscreen with Wi-Fi
- Optional Solid State Relay (SSR) for tighter temperature control, longer element life, and quieter operation
- Optional Orton Vent Master downdraft vent, especially recommended for ceramic firings to pull toxic byproducts safely outside
- Optional caster stand upgrade, swap the stationary stand for one that rolls so you can reposition the kiln easily
- Optional Lid Lifter takes the weight out of opening the lid on a kiln this size
- Optional Power Interrupt Switch / Automatic Lid Shutoff, cuts element power when the lid opens for added safety
- Furniture kit available with 8 half shelves, an assortment of 1"/2"/4"/6" posts, and 1 lb of shelf primer, much cheaper to add upfront than order separately
Specifications
| Model | Jen-Ken Ceram-A-Glass Oval 18 |
| Kiln Type | Dual-Mode Glass + Ceramic (Top Load Oval) |
| Interior Dimensions | 24" x 40" x 18" |
| Volume | 11.45 cu ft |
| Glass Mode Max Temp | 1700°F |
| Ceramic Mode Max Temp | 2150°F |
| Manual Bypass Max Temp | 2300°F (inquire before ordering) |
| Voltage | 240V |
| Amps | 45 |
| Watts | 10,800 |
| Plug Type | NEMA 6-50 |
| Controller | Multiple options at checkout (Orton AutoFire 12-Key, AutoFire Slide, or TAP Smart) |
| Product Weight | 375 lbs |
| Shipping Weight | 350 lbs |
Want to use the 2300°F manual bypass, or have questions about dual-mode firing?
Give us a call before ordering. We'll walk through what you fire in glass, what you fire in ceramics, whether you need the cone 10 bypass, and which controller and upgrades make sense for the way you actually work.
📞 (801) 839-5882Monday to Friday, 9AM to 5PM MST