RESTANT MATERIALS 3

PROPERTIES OF METALS
1. Melting point- how high is the melting point e.g steel has a high melting
2. Hardness- how britil is something is (soft or hard)
3. Ductility-how easy something is to bend,streatch
4. Maleability- how easy is it to mold and shape/bend
5. Electrical couductivity- does it conduct electrity e.g copper
6. Aesthetics/Appearance-is it shiny,smooth and what colour
7. Resistant to corrosion -is it got a coating e.g plastic and does it rust
8. Magnetic properties -some metals are affected by magnetic properties
DIFFERENT SHAPES OF METAL
1. Angle section
2. Chanel section
3. T section
4. Tube
5. Flat ship
6. Rod
7. Sheet
8. I beam
9. Box section
POWER TOOLS IN THE WORK SHOP
1. The circular saw- cuts straight line accurately. Can prepare large sheets of wood. Cuts lengthe ways or across the grain
2. Extraction-it is very important to keep the machine shop safe. It takes dust and shavings away.It is stande for the law.
3. Planer thickness- cutting blade rotate and remove material planes down automatically to set thickness.Produces a very clean surface on the side.Will not rake twist out of a piece of wood.
4. Band saw- Cuts curves very well. Very useful and efficient. Use a fence and guide to get a better, more accurate,cut extracted too-to the side.Maximum throat size is...30cm
5. Belt sander-sands the surface.Go with the grain.Don't start without holding on!!!
6. Biscuit jointer-cuts a slot receive a biscuit.The biscuit will swell up when glued into the joint.Can be adjusted to the right depth

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RESTANT MATERIALS 3

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