Manuals Kiln FAQ All FAQs

Frequently Asked Questions - All FAQs

FAQs - All FAQs

A: You should ensure the Kiln has at least 200mm clearance on all sides and a minimum 600mm clearance above the Kiln. NEVER place anything on top of the Kiln. Things are often forgotten and this is a fire risk.

A: Adequate ventilations around the kilns is essential, make sure that the kiln is situated in an area where there is at least some natural ventilation to the outside of the building (A window or doorway). If not, you may have to consider either an exhaust fan or an attached Kiln ventilation system (Ventmaster from Woodrow). Fumes from kilns can be unpleasant depending upon what you want to fire. Some concentrated fumes can be deadly, please carefully consider what you intend to fire and think of the consequences.

A: In a word NO. NEVER place anything on top of the Kiln. Things are often forgotten and can lead to fires. Also make sure that there are no combustible materials stored under, around or behind the kiln. ie: Timber, canvas, paper or chemicals etc.

A: No, no unauthorized persons should be allowed near the kiln during the firing process.

ie: to touch the hot kiln case (can reach over 100 Deg C), or to look through the

spyhole or change the control settings. Kilns get very hot and can cause burns or fires if not used correctly. That said Kilns are not hard to use but people need to take precautions and follow the instructions provided in the Kiln Operation Manual.

A: It is normally advisable to have the Kiln installed on its own separate circuit. This avoids tripping any other connections if there is an issue. Since Kilns require a large amount of power when running its best they have a dedicated circuit. If the Kiln is installed on a new circuit that has an RCD (Earth Leakage Breaker) please ensure these are Type "D" breakers. Some RCD breakers have a tendency to trip as they are overly sensitive, this is due to the moisture present inside the chamber coming in contact with the coils. Please contact us or have your electrician call if you need further advise. 

A: When we make the Kiln we spray on a Hi-Alumina sealer coating that helps harden the board’s surface, reduces potential dues and improves the efficiency of the board. The spray in normally clear so we add food dye so we can see we have a good coating of the board. This normally burns off during our first test firing but there may be some areas that you can still see the colouring. It’s nothing to worry about.

A: Before you begin ensure you have the correct safe working clothing to fire the kiln:

i. Mask – Class P1 minimum. (Any dust can be hazardous if inhaled)

ii. Leather mittens or good quality garden gloves (ideally non combustible)(things can be hot)

iii. Long sleeved loose fitting clothing non combustible.

iv. Safety glasses with infrared filters should be worn when viewing through spy holes at elevated temperatures. The glow from inside the Kiln is a type of heat radiation and can burn.

A: Always ensure there is shelf placed on the floor of the Kiln. This helps protect the floor of the Kiln which can’t be easily replaced like a shelf can. We advise never to place pieces directly on the brick floor as you will eventually damaged to brick floor. Woodrow kiln do not require this shelf to be propped up off the floor of the Kiln. We'd advise against propping directly on the brick as it will slowly eat into the brick floor over time that's why it's best to use a shelf as a solid base that can be easily replaced if there is an issue. Should you be getting a cold spot on the floor incrementally increase the soak at top temp to give time for the floor to catch up. Remember the shelf is a mass and should be considered in how evenly you stack the chamber.

A: To maximize the amount of pottery that enters the kiln. You can create multiple levels separated by Kiln shelves or Batts (made from cordierite or other kiln-safe material) and props  of varying heights. Choose pieces to load based on height. Load tall pieces on one level, and shorter pieces on another. If you have items of different sizes, split the shelves to maximize space. Always try and evenly load a Kiln, from side to side, top to bottom. This will help ensure the kiln provides an even firing. The Kiln can't adjust how it heats so always try and think "keep things symmetrical".

A: Give your pieces room to breathe. In order for the heat to properly fire your ceramic pieces, try to leave at least 3cm (1 inches) between pieces, and leave some room at the top of each level for the heat to pass evenly throughout the kiln. If you find you are getting clod spots between pieces increase the gap.

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