- Manufacturers of high quality kilns for ceramic, pottery, porcelain, glass and knife making. In business since 1948 we offer a full line of U/L listed, CU/L listed as well as CE marked kilns. Kiln sizes range from the personal, 6 inch units to large 14 cubic foot production kilns. Our controls range from the basic manually operated to the computerized RampMaster 2. Evenheat also offers KISS, a ...www.evenheat-kiln.com