Big Glass, Even Heat: 28 Inches of Round Fusing Capacity
If you're working on large bowls, platters, table tops, or sink-sized fusing projects, you need a kiln that's big enough to hold the piece and heat it evenly from edge to edge. The Jen-Ken AFG-28-E is built for exactly that. A 28" wide round chamber, a generous 26" round shelf, and a top-and-side firing configuration tuned specifically for glass.
The top elements blast radiant heat straight down onto your glass, which is what fusing and slumping actually need. The side coils support the top elements by bringing the chamber up to temperature evenly, so you don't get cold corners or uneven slumps on big pieces. Max temperature is 1700°F, which is right in the sweet spot for full fuse, tack fuse, slumping, and draping.
You've got room in here for serious work. Up to a 26" round bowl, or about 18.3" square on a flat table top. That's enough capacity for statement pieces, production runs of dinnerware, or larger architectural panels. It runs on a standard 240V / 36 amp NEMA 6-50 outlet at 8,640 watts, which most studios can handle without an electrical upgrade.
This is a dedicated glass kiln
The AFG-28-E tops out at 1700°F, which covers all fusing, slumping, draping, and casting work but is not high enough for ceramic firings. If you need both ceramics and glass capability in one kiln, ask us about the Ceram-A-Glass instead. If you're a glass-only studio, this is the right kiln.
Who Is This Kiln For?
The AFG-28-E is built for a specific kind of glass artist. Here's how to tell if that's you.
✓ Glass artists working on large bowls, platters, and sinks
The 26" round shelf and round chamber are made for big slumps. No cold corners, no awkward shelf placement. Drop a 26" blank in and let the top elements do the work.
✓ Production studios firing multiple pieces at once
28 inches of round real estate means you can lay out sets of plates, coasters, or smaller pieces and run a full load in a single firing instead of breaking it into batches.
✓ Artists doing architectural panels and large table tops
You can fit roughly 18" square pieces flat, which is enough for sign panels, decorative tiles, and table top fuses. Plenty of working space without going up to a square JK² footprint.
✓ Glass studios scaling up from a smaller kiln
If you've outgrown a 15" or 18" glass kiln and keep running out of shelf space, the 28-E is the natural step up without committing to the largest model in the lineup.
Included with every order
A heavy duty stand sized for this kiln, the full operator manual, the Orton AutoFire 12-Key controller standard (TAP Smart upgrade available), a 2 year limited warranty through Jen-Ken on the kiln and controller, and free freight shipping to the US Lower 48.
You'll pick your digital controller at checkout. The standard Orton AutoFire 12-Key supports up to 4 custom firing programs and uses P-I-D control algorithms to keep your firings dialed in without temperature cycling. The AutoFire Slide adds a touchscreen interface and storage for 35 separate firing schedules with 20 user-defined ramp and hold steps. The TAP Smart Controller with Wi-Fi is the top of the line, letting you run firings from your phone, tablet, or computer with virtually unlimited program storage and automatic software updates.
Recommended Add-Ons
Solid State Relay (SSR) Upgrade
Hands down the best investment you can make. The SSR replaces the standard mechanical relay, giving you faster power cycling, tighter temperature control, longer element life, and lower electrical costs. No moving parts means it's likely to last the entire life of the kiln.
Furniture Kit
Includes one 26" round shelf, an assortment of shelf posts, and kiln wash. Sized for the 28-E. Note: shelves may have minor surface imperfections like scratches, discoloration, or rough edges.
Orton Vent Master Downdraft Vent System
Vents fumes outside through a duct or window, which is safer for you and better for the kiln. Improves airflow and temperature uniformity, helps colors develop more accurately, and extends element life. We recommend it for every glass and ceramic kiln.
Stand with Caster Wheels
The standard stand is stationary. Adding caster wheels makes moving the kiln around the studio simple and safe. Tuck it in a corner when you're not working, or roll it where you need it. Detach any vent system before moving.
Power Interrupt Switch / Automatic Lid Shutoff
Cuts power to the heating elements when the lid is opened and restores it when closed. Highly recommended if you'll be peeking, raking, or opening the kiln during firing.