is it different than Investment Casting (lost wax ) ?
Lost foam, is similar to Investment or Lost wax, in that the medium, or pattern device, is Expendable, they melt or evaporate away, leaving the cast part. They both have advantages, for the type of function they were designed. One Process’s advantage, could be the other Process’s weak area. These points are brought up in the text portion of Education Section. 6. Shell Core Molding 7. The ” V-Process ” — vacuum sealed molding, how it Works.
