Shell molding was first developed in the 19405 and has grown significantly because
it can produce many types of castings with close dimensional tolerances and a good
surface finish at low cost. Shell-molding applications include small mechanical parts
requiring high precision, such as gear housings, cylinder heads, and connecting rods.
The process also is used widely in producing high-precision molding cores. The
capabilities of shell-mold casting are given in Table 11.2.