Materials:
     
                    For creating your own appliances, you will need a casting compound such as
                    Plaster of Paris or Industrial Plaster, Oil Based Clay, Armature, sculpting tools,
                    and liquid rubber latex (room temperature vulcanized rubber).
     

     

                    1.  First you will have to sculpt your design of the appliance, made with the oil
                     based clay on the armature of yourself or pre-made armatures. You start with
                     the basic shape of the appliance then work out the fine details with the sculpting
                     tools. Make sure to know your limits if your application can be worn without
                     major troubles.

                    2.  Once done sculpting, you will have to put a thin coat of petroleum jelly (usually
                    if working with a plaster armature), so that the casting plaster will not bond with
                    you the original armature. Always before applying the petroleum jelly, you should
                    be sure of your design, as once you have it coated. It will not be able to be
                    worked with.

                    3.  Using a plastic dish, fill it with 1 part water to 2 parts plaster of paris or add
                    the plaster to the water until it will no longer dissolve. The plaster may still be very
                    runny, if not at a desired consistency, let the plaster sit a while (1-2 minutes or
                    shorter) but don't leave the plaster unattended. With the plaster gently put the
                    plaster over the sculpture, making sure that all cracks and holes on the clay is
                    covered by the plaster and not to overlap the armature so much that it will not be
                    possible to pry off.
     
                    Allowed to set. Test the plaster by feeling it's surface, if warm or cold, it is not set
                    and should be room temperature to the touch when set.
     
                    4.  Carefully pull the armature and cast apart. Using a sculpting tool, gently and
                    slowly take out the clay, making sure not to damage the inside of the cast. This
                    process should take you a good deal of time, but the results if done correctly are
                    worth the trouble having a negative part of the cast where you are to pour your
                    liquid latex. Clear any extra loose plaster or clay from the negative mold and
                    armature.
     


     
                    5.  Taking the negative mold, fill it with liquid latex, moving it so that it overlaps
                    where the edges of the appliance would be. Pour the extra liquid latex back into
                    it's container. Then taking the armature, put it over the negative mold, so that
                    some of the excess latex squeezes out from the mold. This will make the edges
                    conform to the shape of the armature and ensure a good fit when put on. Allow to
                    dry and carefully pull out the appliance. Your first time doing this may not come
                    out exactly as expected, but practicing and perfecting your own techniques you
                   can make your own appliances.