Metal casting jewelry; Thermal treatment ; Lab Use Laboratory Heating Furnace Muffle Furnace Laboratories Furnace

- The furnace is small, easy to operate, and will melt non-ferrous types of metals up to 1150 degrees C. (such as aluminium, lead, brass, bronze, gold and silver)

- It is ideal for the casting hobbyist, or for professional applications such as in the manufacture of jewellery or for alloy research projects.

- It is ideal for melting metal and then pouring the molten metal into moulds for the manufacturing of small castings, or heating applications requiring the heat treatment of metals.

- It simply plugs in to a normal 240VAC domestic power point. No special power circuit is required. Power consumption when furnace power is active is 2KW.

- The size is: 165 * 225* 367mm and weighs 5.1 Kg. The complete package weighs 7.0Kg.

- Crucible weight is: 1 Kg capacity – 0.25Kg, 2 Kg capacity – 0.34Kg, 3 Kg capacity – 0.49kg

- The furnace controls are easy to use and allows precision setting of any desired temperature. It utilises a thermocouple which is used by the temperature controller to control the “ON” time, for the furnace to reach the desired temperature.

- Once the desired temperature is reached, it will maintain that temperature by the controller switching the power to the furnace “ON” or “OFF” as required, in order to maintain the desired temperature.

Safety and General Instructions.

1. Make sure that you have a suitable respirator to use to avoid breathing any noxious fumes.

2. Be sure that the room where you are going to melt metal, is well ventilated with flow-through fan assist.

3. Make sure that you have suitable protective clothing, such as heavy duty gloves, apron, foundry boots, and metal splash resistant clothing. You must avoid flammable clothing or exposed skin areas.

4. Do not allow long hair to come close to the hot furnace or molten metal. Wear a cap, hat or tie-back.

Considerations when using the furnace:

1. Fit the supplied lid handle, found in the spares bag, to the lid. The other bits are for any ceramic spacers or insulators if replacement is needed. There is also a spare fuse.

2. Set the furnace on a stable flat surface such as a sturdy bench. Position the mould close to the furnace, so that the distance that you are carrying the hot crucible is minimal.

3. It is good practice to set a low temperature first, to allow the crucible to warm up slowly, such as 250*C. Let the furnace stay at that temperature for about five minutes. This also makes sure that the crucible and its contents are dry. Never use a moist crucible or add moist contents into the crucible.

4. It is also good practice to then set a medium temperature such as 650*C, let it settle, then set the final temperature such as 1140*C.

5. This implies that you are aware of the correct melting temperature of the metal that you are wanting to melt. The following table is to be used as a guide.