Abstract: A vise having a pair of vise jaws for clamping a workpiece. A rotatable protractor is provided in one of the vise jaws. A platform is carried by the protractor which extends beyond the vise jaw to support a workpiece. Worm drive gearing between the protractor and a manually-manipulable worm provides for rotating the protractor and the platform to a desired rotational position. A removable member may be connected to the platform. An adapter may be received on the platform to support the workpiece.

Abstract: A vise having a pair of vise jaws for clamping a workpiece. A rotatable protractor is provided in one of the vise jaws. A platform is carried by the protractor which extends beyond the vise jaw to support a workpiece. Worm drive gearing between the protractor and a manually-manipulable worm provides for rotating the protractor and the platform to a desired rotational position. A removable member may be connected to the platform. An adapter may be received on the platform to support the workpiece.

Abstract: A box turning tool for a Greenlee automatic screw machine with a conventional endworking attachment uses a conventional indexable carbide insert to produce proper cutting action on a workpiece. The box turning tool has a shank clamped in the endworking attachment. The shank has an insert seat that lies in a transverse plane that makes an angle of approximately 83 degrees with a central longitudinal plane defined by the shank. The indexable carbide insert cutting edge is mounted to the shank insert seat such that a cutting edge is inherently parallel to a horizontal plane passing through the longitudinal axis of the automatic screw machine spindle and the workpiece. The shank is adjusted in the endworking attachment to bring the carbide insert cutting edge into coincidence with the horizontal plane through the automatic screw machine longitudinal axis. The shank can be formed to locate the carbide insert such that the cutting tip thereof leads or trails the cutting edge.

Abstract: A screw with replaceable threads is particularly useful to releasably join the spiders of rotational molding machines. The screw comprises a master bolt that passes through a first spider, and a tip that is removably assembled to the master bolt. The tip is threaded to selectively engage and disengage a receiver on the second spider. When the tip is assembled to the master bolt, the screw is captured in the first spider. When the tip has worn through use, it can be replaced without disturbing the master bolt. Similarly, when the tip seizes to the receiver, the tip and receiver are replaceable as a unit without disturbing the master bolt.