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Read this DISCLAIMER Before you Proceed              

Any person(s) using informations from this website constitutes acceptance of this agreement.
Advanced electrical knowledge is REQUIRED to begin and or complete this kiln modification
Person(s) using this information or any information offered by this web site are fully responsible for the transfer of this said disclaimer to any other persons user(s) of any informations offered by this web site.
The user(s) assumes full responsibility for the proper interpretations and safe use of these information(s).
Informations here are Not recommended for children under 18 years of age.
Keep products and all related products away and out of reach from pets and children.
Improper installation, care or use of products could result in property damage, Fire, electrocution, blindness, serious injury or death.
Safety goggles are required during this procedure. Avoid inhaling fumes or dust. Must use proceed with proper ventilation. Must dress properly, wear shoes that completely cover the foot, Full length pants and a shirt are required during installations or modifications.
Must wear heavy leather gloves accompanied.
Consult your physician before you proceed if you suffer from any Breathing illnesses, bleeding disorders, tendentious, carpotunnel or any other discomfort before proceeding.
If problems and or discomfort result, discontinue use and consult your physician.
Do not consume alcohol, drugs or other mind altering substances during this procedure.
If any product defects or excessive product wear are discovered, do not attempt to use.
In no event shall the manufacturer(s) or retailer(s) of products used or sold on this web site be liable for incidental or consequential damages or for any other damages to the properties or person(s) of the buyer and or user. The recovery for damages resulting from any and all causes whatsoever, including, but not limited to, misuse, negligence, or strict product liability, will be exclusively limited to the replacement of the product(s) with respect to which losses or damages are claimed or to a refund of any purchase price paid for the products. If you wish to or have purchased products or used information(s) from this web site and DO NOT agree and or accept this disclaimer, DO NOT PROCEED.
Proceed and or use at your own risk.

Proceed at your own risk. This switch, Robertshaw 5500-135 commercial infinite switch, is designed for 120v. It can be purchased from any appliance parts store. I recommend the commercial grade switches. Each switch is to be used with one element ranging from 13ohms to 18 ohms. If your kiln holds one 5 Gallon bucket of rock then one switch will be enough. I have a kiln that holds 18 gallons of rock and I have three switches on it. The temps should not be allowed to exceed 800f. NEVER use the kiln on or near the "high" setting. Use caution when settings are near the "high" setting, the kiln could lock in "high" mode and will cause damage to your stone and possibly element(s). Never operate your kiln near any flammable vapors including, Glues, solvents, fuels or others . Infinite switches produce small sparks as they "toggle" in their operation.
The switches have a dial with numbers from 1 to 6 on them with quarter and half marks on them. The dial settings are NOT temperature settings. For example: You must experiment with your kiln to find out what temperature #4 produces. It might be 375f. Make a chart and write down the final values of each setting. Be sure that you are allowing at least 24-36 hours for your kiln to max out at the dial setting you have selected. Don't become tempted to monkey with the dial when your trying to establish final values for a dial setting. Always fire FULL loads of material.

Read this carefully!!!
If you are unfamiliar with proper and safe installation DO NOT PROCEED
1. Unplug all power before working on your kiln!
2. Mount your switch in a metal box on the side of your kiln. Mount with good and safe clearance from any electrical connections to the element or switch itself.
3. Be sure switch is mounted with the "top" indicator is facing upwards. See diagram below.
4. Use a 14 or 12 gauge cord with ground wire. The best option is to make up a new one or remove one from an old appliance with a ground wire still intact. Washing machine, refrigerator, microwave ect… are suitable.
5. Wire switch as shown in the diagrams below using quality crimp connectors. NO ELECTRICAL tape.
6. Check all connections with a multi-meter to insure there are no "shorts" or "longs".
7. Double check your element to be sure it is in the Ohms operating specifications of this switch as per diagram. Do Not Use old or original elements with this switch. They are not compatible.
8. See diagram Below for details. Please note: the "P" connector is not used on this configuration!
9. Use proper terminal leads on all connections, NEVER use electrical tape! NO connections should be located inside the kiln. All connections should be clear of any metal or conducting parts!

Operate the kiln safely!
1.Never operate kiln on a wooden or flammable or combustible surface.
2.Place kiln elevated on concrete blocks or metal stand. Do NOT set directly on any floor concrete or otherwise!
3.Keep kiln at least 20" from any walls or other objects at all times.
4.Use cement fiberboard on near by walls for an extra-added protection!
5.Use a "dedicated" outlet for each kiln switch on a 15-amp breaker.
6.Never heat-treat large blocks of stone. Stones could violently break apart. This could knock the lid right off a kiln ejecting VERY hot Fragments, creating a serious fire hazard!
7.Keep your kiln out of the weather, Damage to electrical parts will result.
7.Never operate kiln with flammable fumes, liquids, solids or vapors present.
8.Avoid heat-treating in your home or living space. Heating rocks can produce poisonous or harmful vapors, especially if cut on rock saw!
9.ALLWAYS WEAR A RESPIRATOR WHEN LOADING OR UNLOADING YOUR KILN!!! DUST FROM BRICKS AND ROCKS ARE DANGEROUS TO YOUR LUNGS!