Advanced metal casting process part 2 ebook download pdf
H.F. Shroyer patented the foam patterns for metal casting on April 15, 1958. In this patent, expanded polystyrene (EPS) block was used by him to machine the pattern and during pouring, it was supported by bonded sand. This process is called as full mold process. In the full mold process, the patternis usually machined from an EPS block and is used to make large one-of-a kind castings primarily. Originally this process was also known as ‘lost foam process’.