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Investment casting, also known as lost wax casting, is a technique that uses sacrificial wax patterns identical to the geometries of the final piece. This technology is ideal for producing complex and high-precision metal prototypes, in both aluminum and steel, faithfully reproducing every detail.
The sacrificial patterns (waxes) are assembled into a structure called a tree, where the pieces represent the “grapes” and the “stem” is the feed channel for the molten metal. The tree is immersed in liquid plaster or ceramic, then fired: the refractory material solidifies, while the waxes dissolve leaving a cavity identical to the pattern.
Depending on the shell material, it’s possible to cast aluminum (plaster shell) or steel (ceramic shell). The ceramic shell requires a longer and more complex process, with repeated dips in the slurry followed by drying.
