Brass is a great metal to cast with as it can provide
some really great looking results. Many believe that brass, an alloy of
zinc and copper, has been around since our prehistoric ancestors. Today
brass is used for a multitude of products from coins to trumpets not to
mention a whole bunch of other musical instruments.
The low
melting point makes brass a really great material for metal casting
since even the smaller home grown furnaces can be used. By adding and
subtracting alloys from bronze one can successfully make hard or soft
bronzes. Aluminum and tin are sometimes added to bronze to create a
layer that is not corrosive and very durable. Of course, for the home
foundry users, playing alchemist isn't really an option or necessary
and scrap brass is perfectly acceptable in many cases. Locating scrap
pieces of brass should be sufficient enough for whatever project you
have in mind. Due to brass' gleam and yellow shine, many artists will
use the alloy for sculptures, jewelry, and other decorative items.
Other metal casters may choose to use brass for general hardware needs
or vintage car restoration, and of course, whatever else they may
choose.
Generally there are three casting methods that prove to
be suitable for brass casting. Metal casters may choose to experiment
with different methods and should not allow themselves to be limited.
Lost
Wax casting is usually associated with bronze casting but can also be
used for brass and for really any other metal. By using a wax model and
covering it with a ceramic shell, artisans are able to inject the
molten alloy which replaces the wax. Chipping away the shell will
reveal the brass piece. Lost wax casting is used when a high attention
to detail is needed. Artists or metal casters looking to create
decorative brass pieces or sculptures will find that the lost wax
casting technique will meet their needs far better than other
techniques and methods.
Die casting is yet another method used
for brass casting. Die casting is normally used in commercial foundries
since the initial start up cost is undesirable for the smaller home
foundries. By using a reusable mold created from steel, the caster will
be able to create scores of identical products. Die casting with brass
should be used if the caster or artists is planning to make multiples
of one product and can find a viable market for those pieces.
Sand
casting is probably the oldest type of casting and is still a popular
method especially for small foundries. The brass is poured into sand
molds and can create a unique look which may be preferred for the
artisans. Sand casting tends to be the most economically sensible for
small foundries and if the casting does not have to be incredibly
attractive then this method is preferable for many.
Whichever
casting method is used for casting the brass really depends on the
individual. Many find that casting brass to be fun and easy since it
does melt rather easily. A large expensive furnace is not a requirement
when casting brass so first timers using small home made furnaces will
find this alloy attractive. Many have even been able to melt brass in
small ceramic pots using charcoal!
Some ideas of what to make with brass include candle holders, plumbing fixtures, and even musical instruments.
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