How are risers and sprues placed in sand molds? Explain, with appropriate sketches. In shell-mold casting, the curing process is critical to the quality of the finished mold. In this stage of the...

How are risers and sprues placed in sand molds? Explain, with appropriate sketches.

In shell-mold casting, the curing process is critical to the quality of the finished mold. In this stage of the process, the shell-mold assembly and cores are placed in an oven for a short period of time to complete the curing of the resin binder. List probable causes of unevenly cured cores or of uneven core thicknesses.