With making these moulds there was a
ratio from plaster to water witch was 2:1. In making these moulds as normal
there was some steps we followed:
1.Cleaning
out the latex cases with water to get rid of left over clay
2.Using
PVA glue and water Shiam made a paste to strengthen the plaster.
3.Shiam
then added the plaster and mixed it with the PVA to make a thicker paste
4.Shiam
poured the Paste into our latex moulds
5.We
had to tap the tub holding the moulds getting rid of the air
As expected we had some performance issues
which were: finding out where the holes were causing us to loose plaster, also
it was rushed so the moulds that were too small for the pot kept falling in… we
needed to be more prepared
Along with that there were also
things that went right which were: we managed to get the mixture right because
it started to get warm.
We had to wear aprons to protect our
clothes as if the plaster got on to our clothes it’d harden and could ruin our
clothes.
We needed to repeatedly tap the
mould so that the air would go to the top and escape the mould.
Some materials that can be casted
are: metal, concrete and plastic resin
Different forms of moulding:
1.
Blow moulding
2.
Powder metallurgy plus sintering
3.
Compression moulding
4.
Extrusion moulding
5.
Injection moulding
6.
Laminating
7.
Reaction injection moulding
8.
Matrix moulding
9.
Rotational moulding
10.
Spin casting
11.
Transfer moulding
12.
Thermoforming
13.
Vacuum forming,
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