Jen-Ken Ceram-a-Glass Oval 18
Product Description
Jen-Ken’s Ceram-A-Glass series has been designed for the artist that has a passion for all the fired arts! These kilns have both ceramic and glass firing modes.
The glass mode gives the uniform top elements a blast of heat to evenly heat the glass on the shelf while some of the side coils are working to help bring the kiln to temperature.
Engaged in ceramic mode, this model reaches 2150°F.
Engaged in glass mode, this model reaches 1700 °F.
With a manual bypass (Inquire prior to ordering for further information) this model can reach 2300 °F.
This kiln comes with the following free accessories:
- Stand
- Manual
Solid State Relay
A Solid State Relay is hands down the best investment you can make in your kiln!
The relay is what controls the power cycling of the elements in the kiln and they need to be able to withstand a ton of power as they do so. The solid state relays are incredibly efficient compared to the standard mechanical relays and are able to operate at much faster speeds. What this equates to is incredibly tight temperature control for accurate firings, longer element life, and savings on your electrical bill!
The standard mechanical relays have moving parts which cause wear and tear over the years and will eventually need to be replaced; however with a solid state relay it's likely to last the entire life of the kiln! You willsave money and time by never needing to worry about this in the future!
Controller Selection
Jen-Ken has close relationships with the manufacturers of a variety of digital controllers, such as those from SDS Industries and Orton. This means you will have nothing but the best the best in terms of performance and accuracy in your firings.
With a selection of multiple controllers available - you can choose exactly what fits your needs.
TAP Touchscreen Smart Controller by SDS Industries
The top of the line. The bread and butter. The cream of the crop. The controller for those who want to make their lives easier, improve their craft, and make incredible quality products.
This is our top selling controller - And for good reason!
The TAP Smart Controller is without a doubt the best choice on the market right now - It's easy to use, has stellar performance, and is packed full with features!
It has more memory than any other controller, allowing you to more easily utilize, revise, and save many different kinds of firing programs.
Storage for firing programs is virtually unlimited! Create as many profiles, with as many steps as you'd like - you won't be limited by this controller.
Our favorite part though: When ordered with the Wi-Fi Dongle, you can control everything from any device! Prefer to work on your computer or tablet - how about your phone?
With an internet connection to your TAP Smart Controller, updates from SDS Industries can be applied to your controller automatically - ensuring you always have the most up-to-date software for years to come!
Easily adjust the in-progress firing, skip steps, and view all graphical information on your firing with just a "TAP"!
The amount of time you save by working with the TAP Smart Controller pays for itself for years to come - you'll be so happy with this investment that you won't know how you managed so long without it.
The TAP Smart Controller supports the Loud Alarm option.
Orton AutoFire Slide Touchscreen Controller

The AutoFire Slide is the latest addition to the AutoFire controller family. It has all the benefits and features of the AutoFire 4000 with a user-friendly touchscreen interface.
Using P-I-D control algorithms to tightly control kiln temperature, this controller eliminates temperature cycling. Cycling occurs when the controller turns the kiln on or off in a way where the actual temperature does not closely follow the desired firing schedule, so this ensures your firing schedules are very accurate (Tip: Order your kiln with a solid state relay to close the gap even further!)
This controller allows the operator to create, program, and save 35 separate firing schedules with 20 user-defined heating and cooling rates, target temperatures and hold times. For glass crafters, ceramicists, and heat treaters alike - you’ll find maximum flexibility with your firing programs.
For you ceramic artists, this controller provides a quick selection of preset cone programs that are designed specifically for ceramic firings. Every cone-fire program allows the operator to set a preliminary preheat cycle for drying ware, an optional hold time at the final heating temperature for additional heat-work and an optional cooling cycle at the end of the heating cycle. Every cone-fire program also allows the operator to select an optional firing speed that can shorten or lengthen the firing time up to 40% for large or small kiln loads.
Orton AutoFire 12-Key (AF/AFG) Controller
The Orton AutoFire 3000 12-Key (AF/AFG) controller has 12 keys for programming.
The Orton AF 12-key supports up to 4 custom firing programs.
Orton controllers use P-I-D control algorithms to tightly control kiln temperature. This eliminates temperature cycling. Cycling occurs when the controller turns the kiln on or off in a way where the actual temperature does not closely follow the desired firing schedule.
Orton controllers store all of the program information in memory when shut off. This is helpful for if power is lost in the middle of a firing, the controller remembers how far the program has progressed and determines if it can resume once power has been restored.
The AutoFire controller can add hold time to firings already in progress, edit programs in progress, and even skip in progress! These are some of the most useful features that are offered in both the TAP and AF 12-key controllers.
Orton Vent Master Downdraft Vent System
With all ceramic and glass kilns, we highly recommend that they be vented to the outside. But why?
First and foremost - is your safety! When heating various materials in your kiln, many have byproducts that burn off and are released into the air. These byproducts are toxic and you don't want that mixing with the air you're breathing.
The Orton Vent Master has a patented process called "Downdraft Venting". By manufacturing the kiln with a hole in the bottom, we're able to attach the vent here and pull the fumes out and vent them outside through a duct or window.
This process helps improve the air flow and produce more uniform temperatures throughout the chamber, ensuring that each of your pieces is accurately being heated. The additional oxygen will ensure your colors develop to their truest nature.
In addition, with downdraft venting - you'll extend the life of the elements and other metals within our kiln, ensuring your kiln lasts longer and you have reduced repair costs down the road. We often hear from customers that they are confident that by utilizing their venting system their kiln will last much longer than it would have otherwise and that the investment has more than paid for itself.
Furniture Kit
Furniture Kits are necessary accessories for any kiln owner as firing directly on the kiln floor is not only bad for the kiln, but your pieces as well. In addition to this, they're also useful! A furniture kit will allow you to stack multiple shelves on top of one another in order to maximize the useable space when firing smaller pieces.
If you have one that will fit this kiln size already, then you're in luck! But if not, you'll want to ensure you add this to your order as well.
Furniture Kit includes:
- Eight (8) Half Shelf
- Six (6) 1" Post
- Six (6) 2" Post
- Six (6) 4" Post
- Six (6) 6" Post
- One (1) 1lb. Shelf Primer
Kiln furniture can be special ordered separately, but if done so the cost is ~10-20% higher and will incur a separate shipping charge. It's best to include this on your initial order of the kiln.
* Received shelves may contain surface imperfections such as scratches, discoloration or rough edge. These possible imperfections are understood and accepted by the buyer.
Lid Lifter
The optional lid lifter lightens the force necessary to operate the kiln lid. It does so with ease and grace and with no negative effects upon the kiln itself.
With many of these larger kilns, the lids tend to pack a solid punch when it comes to weight. While they're still manageable without the optional lid lifter, we've always found them to be a joy to use and make our day-to-day lives in the studio that much easier.
Stand with caster wheels
The standard order of this kiln comes with a stationary stand built to handle the weight, heat, and shape of the kiln. While this works perfectly fine, attempting to move your kiln can be a difficult maneuver and could result in a damaged stand, or worse - a broken kiln!
Ordering a stand with caster wheels ensures the whole process of moving your kiln for any reason is a smooth and simple process.
No longer worry about if you're running out of room within your garage - you can tuck your kiln away in a corner when it's not in use! And of course - if you're one for moving the kiln around the studio or other rooms, this is essentially a necessity.
When ordered with a vent system - make sure to detach first before moving the kiln.
Depending on the model, the stand will vary in height. Its primary use is for mobility.
Power Interrupt Switch / Automatic Lid Shutoff
The power interrupt switch is a useful safety feature which removes power from the heating elements of your kiln once it is opened, and reapplies the power once the lid has been closed.
If you believe you'd ever like to open the kiln during firing, the power interrupt switch is a highly recommended addition to your new purchase.
Product Specifications
| Model | Ceram-A-Glass Oval 18 |
| Max Temperature | 1700 °F Glass Mode / 2150 °F Ceramic Mode / 2300 °F Manual Bypass (Inquire prior to ordering) |
| Loading Type | Top-loading |
| Inside Dimensions | 24" x 39" x 18" |
| Volume (Cu. Ft.) | 9.33 |
| Power Plug Type | NEMA 6-50 |
| Voltage | 240 |
| Watts | 10800 |
| Amps | 45 |
| Shipping Weight (lbs.) | 350 |
| Product Weight (lbs.) | 375 |
| Shipping Lead Time | Made To Order - Please Inquire |
| Warranty | 2 Year |
Price Guarantee
At Soul Ceramics, we want our customers to know they are getting the best prices online. When you see the blue "Lowest Price Guarantee" words on our website, we are guaranteeing that we have the lowest price anywhere on the internet. In fact, if you find another online store that offers a lower price then us within 30 days of your purchase date please let us know and we will hand you the difference - in cash. We want you to shop confidently knowing that you are getting the absolute best price on your kiln or wheel.
To request your partial refund, e-mail us a link to the same product on our competitor's website within 30 days from the date of your order and we will process the credit accordingly.
Our Lowest Price Guarantee has some restrictions:
- You must purchase the item from our website before requesting your partial refund
- Special promotion offers are not eligible
- The competitor must be an online store only
- The website can not be a discounter or auction website, such as eBay
- The competitor must be an Authorized Retailer for the product
- The price on the competitor's website must include all shipping and processing fees
- The model must be "like-for-like" (eg: In-stock vs. In-stock or Made-to-order vs. Made-to-order)
- The manufacturer must be either Evenheat Kiln, Jen-Ken Kilns, or Paragon Industries
Shipping & Returns
At Soul Ceramics, we know how annoying it can be when you are hit with hidden costs and fees when you purchase items online. That's why we offer FREE SHIPPING* on all standard orders through Soul Ceramics.
We even cover extra costs such as lift gate service, so the price you see is the price you pay!
For the full details on this offer and our detailed shipping and returns policies, click here.
* Non standard orders include shipments outside of our standard shipping range, and orders that do not include a kiln or pottery wheel in the same shipment. Soul Ceramics reserves the right to inform you of shipping costs before orders are finalized.
Warranty
Jen-Ken warranty highlights
- Brick kilns: 2 years. Fiber kilns (Chili Pepper, Bonnie Glo, ProFusion): 1 year on the kiln, 2 years on the controller.
- Elements, thermocouples and relays are covered for 2 years, but not against glaze damage, overfiring or thermocouple breakage.
- Controllers are warranted by their makers: Orton AutoFire 2 years, SDS TAP 3 years.
- Report problems within 15 days, keep your dated receipt and serial number, and do not discard any parts.
- Parts warranty: Jen-Ken ships replacement parts free within the lower 48 states and supports installation by phone or video. On-site labor is not covered.
- Not covered: overfiring, reducing or salt atmospheres, cracked bricks or lids, improper electrical installation, and altered kilns.
Extended warranty (Clyde)
- Optional extended protection from Clyde can be added to eligible products at checkout, on top of the manufacturer's warranty.
- Clyde plans cover the core product only. Add-on options such as controllers, furniture kits, stands, blade fixtures and vents are not included.
- Claims under a Clyde plan are filed with Clyde, not with the manufacturer. Keep your Clyde confirmation email with your order confirmation.
In every case
- Keep your order confirmation. It is your proof of purchase date and every manufacturer asks for it.
- Report a problem as soon as you notice it. Several manufacturers require notice within 10 to 15 days of discovering a defect.
- Contact Soul Ceramics first. We are the authorized dealer for everything we sell and we coordinate claims with the manufacturer on your behalf.
- Do not discard any failed parts until the claim is resolved. Manufacturers may ask for them back for inspection.
Reviews
* Reviews may be for a similar product in the same series, but a different size.











