A burn out at the foundry

A large burn out oven is ready to receive the shells

A burn out is when they take the ceramic shell and then "burn out" the wax that is within the shell. That is why this process is often referred to as "the lost wax method of bronze casting." We will lose the wax in this part and it will be replaced by bronze in the next part.  These burn out ovens are some of the largest I have seen.

Heated up- the shell will bake and the wax will
melt, leaving room for the bronze. 

The wax covered in ceramic is ready for burn out.