JH Series - Crystalline Glaze Kilns

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A Special Kiln Designed Just for Crystalline Glaze

The JH kilns feature special higher temperature K25 firebrick for extra high cone 12 firing (and faster cool-down), extra power for fast heat up, "Quad" element configuration for extra element area, super heavy-duty thick elements to hold up to the special rigors of crystalline firing, minimal insulation to allow for fast cool down, and type S thermocouples for long life.

Custom variations on the basic design such as more insulation, APM elements, more power and special sizes are available by special quote.

Extra Images

Quad elements
Quad elements shown hot
DynaTrol
Type S thermocouples are standard on the JH Series

Kiln Models

Model No Cubic Ft Inside Dim (Inches) Description
JD18-JH Crystalline Kiln 2.6 17-1/2" Diam x 18" High Jupiter Automatic panel
e23S-JH Crystalline Kiln 4.7 23-3/8" Diam x 18" High Easy-Fire panel
JD230-JH Crystalline Kiln 6.7 22-3/8" Diam x 27" High Jupiter Automatic panel
JD2927-JH Crystalline Kiln 10.3 29" Diam x 27" High DaVinci Automatic panel

Features

Durability

Durability, Repairability, Better Heat Transfer. The smooth, hard surface of the inside ceramic channel allows the elements to expand and contract freely. No pins! The dense ceramic holders extend element life because they do not insulate the hot elements from the kiln interior.
The Quad Element System provides a massively robust element for long life under production conditions. Standard on eQuad-Pro and JH Series. Optional on most other kiln series.
Type S Platinum Thermocouples are the best high temperature thermocouple for ceramics
Industrial grade ceramic terminal blocks make changing elements easy.
Aluminized stands are extremely strong and corrosion resistant. The offer solid support under the kiln - unlike spot-welded angle stands that are common in the industry.
Special brick coating hardens and seals brick for durability and cleaner operation.
Stainless Steel clips help the lid stay secure and durable. This extra step ensures that the lid won't slip out of the stainless steel band.
Corrosion resistant materials and methods result in a long-lasting kiln.
Three case clamps per 9" high kiln section are redundant safety for your L&L kiln.

Performance

Zone control gives you the utmost in controllable temperature uniformity. The DynaTrol separately measures temperatures in the bottom, middle and top of the kiln and automatically adjusts the heat output of three zones during the entire firing.
DynaTrol with 4 Easy-Fire programs (Slow Bisque, Fast Bisque, Slow Glaze, Fast Glaze), 6 custom programs, PreHeat, Delay, Program, Segment Review, and Diagnostics. Zone control included on most kilns.
K23 firebrick combines good insulation with strength

Ease of Use

Feather-light spring hinge allows full access without a side support bar - for easy loading. Standard on all 10 and 10 sided polygonal kilns.
Solid large non-tapered peepholes allow a wider view into the kiln.
This is used on top-loading kilns that are 8 sided or less

Support

The combined experience at L&L Kilns in kilns, ceramics, electrical engineering and process engineering is unsurpassed. We work as a team to help you get you answers and help.
Most L&L Kilns have a three-year limited warranty.

Serviceability

Remove two screws and a few plug-on wires and the panel disconnects in 5 minutes.
Sectional kiln construction make Jupiter kilns easy to move, set up and disassemble for maintenance.
Each kiln sections plugs into the Jupiter control panel. Easy to remove or change kiln configuration.
Wiring is neatly laid out using National Electrical Code and UL499 Standards
The bottom can be easily reversed in case of a firing mishap.

Safety

Power Relays are mercury-free to comply with increasing regulation and concern about mercury in schools
All L&L Kilns come with an on-off switch