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paints are usually suitable for metals or timber
but not plastics. However there are a few specialty
paints available for plastics. Paints are divided
into three main groups oil based paints, water
based paints and solvent based paints.
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1.) Oil based paints
Oil based paints are normally
only available in gloss finishes. They are
tough and long-lasting and are appropriate
for metals and woods. When you paint it
is important to prime the material first.
This primer helps the paint stick to the
material better and produces a better finish.
Always use a good brush or roller and clean
them after with a turps substitute or white
spirit. Most new oil based paints are suitable
for use on children’s toys and can
be used for internal or external work.
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Water based paint
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2.) Water
based paints
Water based paints
unlike oil based paints are available in
a wide range of finishes from matt to high
gloss. A few water based paints are only
suitable for light work such as painting
walls for example ‘matt vinyl emulsion’.
They are mainly suitable for wood only,
however there are some available for metals.
Water based paints are not as durable as
oil based paints but you only need warm
water and detergent to clean up afterwards.
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3.) Solvent
based paints
Solvent based paints
are often found in spray cans and dry a
lot faster than other types of paints. There
are non spray types available but these
are hard to apply with brushes. These paints
include fascinating finishes such as speckled,
hammered, etc. Solvent sprays can be very
expensive but give very good results on
small projects. A cellulose based solvent
is needed for cleaning up. Good ventilation
is compulsory as the vapours are very toxic
and flammable.
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Mr DT says 'Read the text above and then answer
these questions below'. Write your answers
on a sheet of paper, don't forget to write
your name on the sheet!:-
1). Name the three main groups of paints?
2.) Why should you prime before you paint?
3.) What should you use to clean your brush
after using oil based paints?
4.) What products are oil based paints suitable
to be used on?
5.) What finishes are available for water
based paints?
6.) What should you use to clean your brush
after using water based paints?
7.) What special finishes are available for
solvent based paints?
8.) What should you use to clean your brush
after using solvent based paints?
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