Lost wax process and bronze casting

 So this technique is known as the lost wax casting process.
This allows you to create detailed pieces in wax and then cast them in a metal. I've cast mine in bronze as its cheap but you can also do it in silver or bronze.

• first create your piece in wax - this is easily done by heating the wax and using wax moulds. This is a photo of one of my rings. You need to add a sprue in order to attach it to the casting 'tree'.you will need a casting base and top.  

•  Next you attach the sprue to the tree by heating the wax. You need to make sure that it is at the best angle so that the metal can easily flow through it (similar to the angle that branches come off a tree)

• You cant see it in this photo but you need yo insure that the bottom of the wax tree is securely attached to the base by filling in the bottom edge with wax.

• Then put the top on and add a piece of tape to insure that it doesn't over flow. 

next measure out your plaster - this is a special extra fine type of plaster 

you need to measure out the correct amount for your casting base.

 Mix the plaster - start slow and work up to a higher speed. - 3 minutes

remove the plaster and vacuum it. for 2 minutes - in order to get all the air bubbles out.

The plaster should raise up and then quickly dip

Slowly pour the plaster over your cast. Make sure you cover the top.

Vacuum the cast again to remove all the air bubbles. If any of the pieces are poorly attached then they will float to the surface and the cast will not work.

Wobble the stand as it is being vacuumed. Do this for 2 minutes.

This is what it should look like. The piece then needs to set and be left upside down in the kiln so that all the wax gets heated up and drips out. 

This is what is used to pour the bronze into the cast. It heats up the metal and then spins round insuring that all the gaps are filled and there are no air pockets left

The red part is the newly poured metal and it is this colour because it is very very hot.

You have to wait until the metal has cooled and then dunk the plaster in water and due to the sudden change in temperature the plaster crumbles, leaving you with your final piece.

The cast straight out of the plaster.

Once it has been washed.