| 摘要 |
<p>Before cutting, a workpiece is encapsulated in polyurethane, PVC, epoxy resin, polystyrol or polyester of a min. wt. of 1 lb/cu.ft. The method is suitable for S-C material such as silicon and germanium, but may also be used for quartz, thin copper tube or bronze. A set of rods may be encapsulated side by side in e.g. a rectangular block and an equal cut made across them. The material may be cast or sprayed on the workpieces, and avoids handling and cleaning problems of wax.</p> |
