Lost wax technique

nvestment mold

The sprued wax copy s d pped nto a slurry of f nely granulated ceram c. Th s coat ng process s repeated unt l a th ck and course shell, or ‘ nvestment mold’, s formed. The nvestment mold s then dr ed and heated and the wax melts and runs out. Now all that rema ns of the or g nal model s a negat ve space formerly occup ed by the wax, ns de a hardened, f re-res stant ceram c shell.