Lost-foam casting (LFC) is a type of evaporative pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax.
This casting process is advantageous for very complex castings that would regularly require cores. It is also dimensionally accurate,
maintains an excellent surface finish, requires no draft, and has no parting lines so no flash is formed.
The un-bonded sand of lost foam casting
can be much simpler to maintain than green sand and resin
bonded sand systems.
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