Some people argue that jig grinding is obsolete as one of the important precision grinding services. If that is the case, why will the US government not allow a company such as Moore Jig Grinding to ever go out of business? This is because the jig grinder represents the last word in precision grinding.
Many tool and die, mold making and aerospace machine shops use the jig grinder every single day. They use it to perform a wide range of tasks, not merely round holes.
Some of the uses for this remarkable machine include pocket grinding, draft angle grinding, blending of radii on complicated contours, heel pocket bottoms, corner radii on ejector blades, and much more. It is a shame to hear the uninformed state that the jig grinde is obsolete. These people just do not have hands on experience in the day to day reality of a modern tool shop.
Randy Hough has a website: http;//precisiontoolgrinding.com that talks about jig grinding