They offer the ability to make multiple copies of molds fairly inexpensively, as with silicone molds, but the quality of appearance is poorer than with any other mold option available. The initial tooling is the metal pattern; then a suitable cast resin anbsp;...
|Title||:||Plastics Processing Technology|
|Author||:||Edward A. Muccio|
|Publisher||:||ASM International - 1994-01-01|