ch 18 keywords

a duplicate of restoration carved in wax

a range of melting points of the individual components of wax

the movement of wax as it approaches the melting range

a wax film that remains on an object after the wax is removed

the procedure for fabricating a metal restoration by encasing the wax pattern in stone and then vaporizing the wax under high temps to leave an empty impression space once occupied by the wax; molten wax is then cast into the space and takes the shape of the pattern