Regular Glass Kiln

Regular glass kiln maintenance is needed to ensure the correct operation and working life of a glass fusing kiln.

Before carrying out any kiln maintenance, please disconnect power from the kiln.

It is a good idea at this time to check the power cord for any signs of over heating or damage.

Examine the plug and plug receptacle for any signs of damage or heat discoloration.

If the kiln is continually being unplugged or the cable is strained reaching the receptacle, damage may occur inside the receptacle resulting in possible over heating.

Always ensure the power cord is not stretched in reaching the power point.

The power cable should reach the receptacle easily, if not obtain a longer cord or move the kiln. Do not use an extension cord.

Check Before Each Firing

Look inside the glass kiln for anything out of the ordinary.

It is a good time to vacuum inside the kiln before each firing to prevent dust falling onto the fusing glass during the fusing process.

Check for any loose pieces in the lid or sidewalls that could fall onto the fused glass project.

Broken sidewall pieces can be cemented back into place with a kiln repair cement.

Do not get cement on elements as this will lead to element failure.

Check element grooves to ensure they are free from foreign material.

Kiln shelves and posts should be checked for major cracks before firing. This could prevent a shelf collapse during firing.

Small cracks may be present but won't necessarily spread and cause damage.

If the kiln lid or kiln body has an adjustable band check and tighten if required.

Check lid interior for cracking.

Small chips can be cemented into place with a kiln repair cement.

Cracks should also be repaired with cement.

These actions will prevent the damage spreading.

If a brick is damaged, it may need to be removed and a new brick obtained, cut to shape and fitted.

Refer to fusing kiln manual or glass kiln makers' website for further details.

Sand lid smooth and flat after any repairs.

If kiln wash has been applied to kiln floor check condition, re-wash if necessary.

Do not apply wash to sidewalls as it could enter element grooves causing the element to fail.

Do not apply kiln wash to a ceramic fiber firing chamber.

It is not necessary to kiln wash lid.

If the thermocouple or tube assembly show signs of damage, replace immediately.

Whilst glass kilns are well insulated they operate at high temperatures, basic safety conditions must be in place for safe operation of the kiln.

Always ensure the area around the kiln is kept free from all combustible material such as paper, cardboard, plastics, wood etc.

Flammable liquids must be removed.

If the glass kiln must be used near a gas appliance, ensure that the appliance is turned off and has no gas leaks, otherwise a serious accident may occur.

Do not leave a glass fusing kiln unattended.

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