Abstract: A vibration damping structure for a machine tool is provided. The structure includes first and second plate members disposed in an opposing spaced apart relationship with one another. A cast structure formed of a polymer concrete extends between the first and second plate members. A first structure is attached to the first plate member and extends inwardly of the cast structure. The first structure has a compression surface extending in a spaced apart relationship from the surface of the first plate member. A second structure is attached to the second plate member and extends inwardly of the cast structure.

Abstract: An improved tool particularly suited for removing nuts and the like from a stud or similar retaining member. The tool includes a split housing having channels therein extending along perpendicular axes, and at least one cam follower pivotally mounted within the housing. A shaft is slidably positioned in one channel for linear movement along an axis. The shaft is threaded at one end and extends through the housing and has a rotating member coupled thereto which bears against the exterior of the housing. On the opposite end of the shaft a camming surface engages one end of the cam follower to cause movement of the follower in response to movement of the shaft. A cutting element is slidably positioned within a channel in the housing for linear movement along an axis perpendicular to the axis of the shaft. The cutting element is coupled to engage the opposite end of the cam follower for movement in response to movement of the follower.