Thirty years and five Rocky films later, the gamble has definitely paid off. Richard and Chris Hilton's Edgecomb Potters-Maine's largest pottery company-now boasts 100,000 sq. ft. of production space on its main campus in Edgecomb. Sixty-five percent of the company's business comes through its retail outlets in Edgecomb, Freeport and Portland, and Edgecomb pieces are sold in an additional 60 galleries across the country. It might be an understatement to say things are going very well for the Hiltons now, but it wasn't long ago that a major element of Edgecomb's production process needed an adjustment.
"With crystalline glazes, kilns have to hold at an exact temperature for a certain amount of time to allow the crystals to grow," Richard explains. "The heating elements in the electric kilns sat in a groove of brick, so we weren't getting full efficiency."
Richard found that the elevated temperatures needed for his crystalline glazes caused the elements in his electric kilns to burn out with surprising regularity. While elements could always be replaced, the process was extremely difficult and could only be repeated a few times. "By the third time we changed the elements, the kiln's shell had about had it because the brick started to break," Richard says.
Frustrated as he was with his "throwaway" electric kilns, Richard found few alternatives on the market for his firing purposes. Though a solution would eventually present itself, it would take 10 years, a tax break and a certain degree of German ingenuity to put things straight.
For all the kiln's usefulness, Richard knew he couldn't justify the $80,000-plus total cost of what he describes as the "Rolls Royce" of kilns. Edgecomb's electric kilns may have had short life spans, but they weren't that expensive. Even so, Richard did his homework. He gathered information on the Lilienthal, Germany-based Nabertherm GmbH and its products and waited.
Early in 2003, Richard learned of an amendment to Section 179 of the Federal Tax Code that would allow a small business like his to write off $100,000 of the cost of new equipment in the year of its purchase; the balance could be written off the following year.* Richard immediately set up a meeting with representatives of Nabertherm's U.S. office to discuss purchase options; within a matter of months, the deal was done and the kiln was in place at Edgecomb.
Of course, getting the unit to suit his particular application was another story.
*This deduction is applicable to the 2003, 2004 and 2005 tax years. For more details, see http://www.selfemployedweb.com/section-179.htm and/or consult a qualified accountant or tax advisor.
The first issue to be addressed concerned the kiln's temperature distribution. Richard soon realized that pieces placed at the top of the kiln were not receiving the same level of sustained heat as those at the bottom. Nabertherm sent technicians to Edgecomb to profile the temperature distribution in the kiln and optimize the kiln's computer program. It soon became apparent that the kiln's single control zone did not provide the accuracy needed to meet Edgecomb's firing needs. Nabertherm divided the heating system to give the kiln four independently controlled zones, thus maintaining a constant temperature-and ensuring high-quality end products-throughout the unit.
Rod holders and uneven temperatures weren't the only hurdles Richard faced during this time, however. Because the new kiln required more power than any piece of equipment the company had ever used, Edgecomb had to arrange for a $15,000 electricity upgrade through its local power company, which then necessitated the purchase of a $20,000 phase converter that would allow the motors on the company's previously existing units to continue to function. When all was said and done, about seven months of troubleshooting had passed. Winter had turned to spring and then summer, and Edgecomb Potters was ready to fire some clay.
**Nabertherm model W 2200/H
"It really is incredible," Richard says. "Nothing's like the Nabertherm."
For more information about Edgecomb Potters, visit http://www.edgecombpotters.com.
For more information about the shuttle kiln described in this article, contact Nabertherm Inc. at 54 Read's Way, New Castle, DE 19720; (302) 322-3665; fax (302) 322-3215; e-mail firstname.lastname@example.org; or visit http://www.nabertherm.de.
Editor's note: Kiln selection is a function of many different variables. While electric kilns did not suit the specific needs of this application, they are the best option for some pottery producers. This article is not intended to recommend the use of one kiln type or brand over another but is merely a case study of one pottery producer's experience. Pottery producers should carefully evaluate all options before choosing a particular piece of equipment.