Typical cycle times are 3 - 4 weeks. Typical cycle times are 4 weeks. 3D Keltool A technique for providing quality steel tool molds quickly and economically for prototype and production runs, from one to hundreds to even millions of plastic injection molded parts. Typical cycle times are 2 - 4 weeks. Webmaster Vacuum Cast molding With the vacuum cast molding, stereolithography or machined parts can be used as masters for creating multiple urethane replicas.
Urethanes are available in a wide variety of characteristics including hardness and impact strength.
By using soft silicone as a molding material, designers have latitude to create parts with little or no draft, undercut, and very intricate detail. Features as small as a finger print can be reproduced with the vacuum casting process. On the down-side, parts with severe undercut will greatly reduce the life of the tool. The 3D Keltool process begins with CAD data of the mold core and cavity. A Stereolithography master is produced from an .STL file determined by the CAD data.