Cutting of funeral vases in granite - uses core cutters to form circular section block with blind bore which is then milled on lathe

摘要

The process is used to obtain roughly hewn funeral vases in granite or similar. The first phase entails cutting or boring a hollow cylindrical core from a granite block. The core has a uniform hollow circular cross section and a closed end, its barrel then being imparted with the vase contours by using a two parts milling operation. An expandable mandrel may enter the bor to secure the core on the lathe. The primary milling operation entails the cutting of a stepped (16) profile. The secondary operation removes the steps (16) from the barrel profile (17).