Melting point- how high is
the melting point e.g steel
has a high melting
Hardness- how britil is
something is (soft or hard)
Ductility-how easy something
is to bend,streatch
Maleability- how easy is it
to mold and shape/bend
Electrical couductivity- does it
conduct electrity e.g copper
Aesthetics/Appearance-is it
shiny,smooth and what colour
Resistant to corrosion -is it
got a coating e.g plastic and
does it rust
Magnetic properties -some
metals are affected by
magnetic properties
DIFFERENT SHAPES
OF METAL
Angle section
Chanel section
T section
Tube
Flat ship
Rod
Sheet
I beam
Box section
POWER TOOLS IN
THE WORK SHOP
The circular saw- cuts straight
line accurately. Can prepare large
sheets of wood. Cuts lengthe
ways or across the grain
Extraction-it is very important to
keep the machine shop safe. It
takes dust and shavings away.It is
stande for the law.
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.
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
Belt sander-sands the
surface.Go with the grain.Don't
start without holding on!!!
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