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Without kilns there would be no ceramics. Since the very beginning when primitive man discovered the soil around a fire changed to rock, learning how to contain the heat and control it has been an ongoing endeavor. Many types of kilns have been constructed over the millennia and today we’re fortunate to have such a wide selection to choose from. You can choose the type of kiln atmosphere you want (oxidation or reduction), the type of fuel you want to use (oil, gas, electric, or wood) and maybe even the special surfaces you want (salt, soda, raku, or pit). This Ceramic Arts Daily guide to types of ceramic kilns will help you make all these decisions.

 

Here’s an excerpt from A Guide to Ceramic Kilns: Choosing the Right Kiln Firing Method and Design For Your Art:

 

Purchasing a Commercially Made Electric Kiln
by Richard Zakin

 

Most electric kilns are purchased completely assembled and ready to plug in. Their design and construction vary a great deal: it is no easy matter for the ceramist to make an intelligent purchasing decision.

 

At one time most electric kilns were front loading. Kilns of this design are highly durable for they must be heavily braced. This makes them very heavy and bulky. While frontloading kilns are expensive, this design results in a kiln that lasts a long time and can be loaded quickly and easily. Toploading electric kilns have been very popular for years because they are relatively inexpensive. These kilns must be carefully designed for they are subject to mechanical and heat stress, particularly in their roof and hinge areas. If you choose a top loading kiln, make sure the roof is replaceable. The flat roof of a top-loading kiln will eventually crack under the stress of normal use.

 

The roof hinges, also points of stress, should be designed with strong elongated arms to keep them away from the heat path. Many newer top loading electric kilns are segmented. The electrical connections between each segment can be a source of real problems. Look for connections made with industrial grade cables which can withstand the stress that results when the heavy segments are assembled and disassembled.

 

The gutters that hold and support the coils should be deep and set at an angle to hold the coils securely. The coils should be pinned to the soft brick with refractory metal pins to insure that they will not come loose and sag during the stress of the high fire. The coils should be made from an alloy that resists high temperatures (such as Kanthal A1); they should be easily replaceable and fairly thick (thin coils burn out very readily), and should be consistently wound to avoid hot spots. The switches, wiring harness, and connecting wires should be heat resistant and of the highest quality. Connections to the power source should be secure: a poorly connected coil will soon burn out. The insulation should be effective and durable.

 

Look for kilns that fire evenly. Floor-mounted coils help keep an even heat throughout the kiln. They add to the expense of the kiln but are a mark of a professional design. Computer-controlled zone firing has proved very effective in assuring an even firing. Each zone is furnished with its own pyrometer and the computer is programmed to direct current to those coils that need it most. Originally computer control was envisaged as a way to automate the firing. An even firing was an unanticipated benefit.

 

Electric kilns are high current devices and they require special, high quality, high capacity fuses, cables, and outlets. For the installation of an electric kiln there is no substitute for the services of a qualified electrician.

 

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A Guide to Ceramic Kilns: Choosing the Right Kiln Firing Method and Design For Your Art
includes the following:

 

Kiln Atmosphere

Ceramic firing can be done with two types of kiln atmosphere, oxidation or reduction. The one you choose for your own work determines the type of kiln you need.

 

 

 

Fuel-Burning Kilns

Certain kinds of visual effects can only be produced with fuel-burning kilns. Find out why you might consider a wood kiln or using oil and gas as fuels, or maybe you to learn more about salt and soda firing.

 

 

 

Electric Kilns

Potters use electric kilns more than any other type of kiln. They’re easy to operate and you can choose between many commercially made models, including small test kilns and front loading varieties.

   
perfectcombustion_400

Striving for Perfection: Energy Efficiency and Perfect Combustion

 

by Hal Frenzel

 

Regardless of your firing atmosphere, efficient combustion can save money and reduce your carbon impact.

 

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About Ceramic Arts Daily:

 

Ceramic Arts Daily is a free website and newsletter written and produced for the benefit of potters and ceramic artists worldwide. The newsletter features both renowned and emerging artists, their work, techniques and artistic perspectives. Regular features include tips and techniques designed to help every artist expand their skill set and widen their artistic horizons. Ceramic Arts Daily also delivers video tips, in which potters and ceramic artists demonstrate various projects and processes. Think of them as e-workshops!

 

Ceramic Arts Daily is designed to be interactive, inviting your comments and fostering a community in which each person can contribute to the growth of their own and others’ skills. You may be surprised at what you learn!

 

Ceramic artists on Ceramic Arts Daily know what ceramic art is all about – from functional pottery to abstract ceramic sculpture. This is about community. You’ll be drawn in by artists’ stories, inspired by their work and find confidence to try some of their techniques. With Ceramic Arts Daily, you’ll learn a little bit of everything. Then you can choose the techniques you enjoy the most to create something new!

 

So start today by downloading our free A Guide to Ceramic Kilns: Choosing the Right Kiln Firing Method and Design For Your Art. Then, get ready for Ceramic Arts Daily to introduce you to new artists and show you new techniques!

 

 


4 Comments on "A Guide to Ceramic Kilns: Choosing the Right Kiln Firing Method and Design For Your Art"

  1. Margo Romanowski December 18, 2013 at 10:11 am -
    :( The download says 404.
  2. Deborah Lewis August 29, 2013 at 1:29 pm -
    I started with a microwave kiln with my fused glass. I have never used one for clay. In my experience, considering the cost of the micro kiln and supplies and how easy it is to pit the inside of the kiln eventually making it useless I would not recommend it. You can find a used Paragon bee hive or other quick fire for not the much more than the micro kiln and itt will give youu many more years of service, more space for multiple projects to fire at the same time and to expand when you find you are addicted to this amazing art form. if you get a Paragon you also have the peace of mind that you will have super customer support if you ever need it. Hope that helps answer your question a little. Deborah Just Because Designs by Deborah
  3. RAHMATU YUNUSA SHARIFF March 24, 2013 at 4:56 pm -
    how is it related with ceramic study and industrial engineering course.
  4. Linda March 28, 2012 at 10:14 pm -
    I have looked at microwave oven kilns and will probably only make jewelry or an occasional small knick-knack. What do you think? As you can tell, I am new to this form of art. Thanks, Linda Garcia lgarcia162@tampabay.rr.com

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