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Model Engineering Glossary: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Pewter

Traditionally an alloy containing 80% tin and 20% lead.

The image shows a pewter flywheel on a solenoid engine. The outer surface has a hammered finish.


Casting

If you just want to cast a rough shape then it is easy to form a mould using wood and then pour the molten metal into the cavity. This is best done outside as the wood will burn and smoke. A second pouring will most likely be more successful as a surface of carbon will have been formed.

Remember that you will need to cut draughting angles on the mould so that the part can be released.

Turning

Pewter turns very well and is probably most similar to a very soft aluminium. Be careful as the tool can dig in, so best to take small cuts. Remember that the swarf is useful as you can melt it back down and once again cast into a shape.

Finishing

Fine emery cloth or wire wool works very well if you want to achieve a fine finish. A hammer finish also looks rather good - eg solenoid engine.

See also: Bronze.

Model Engineering Glossary: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z