the attachment plate 24 and the operator may manipulate the object into the desired position by simply rotating the object and the ball 20 will rotate within the ball support cylinder 18 although the preferred embodiment presents one method by which objects may be mounted to the attachment plate 24 many alternative mounting methods can be utilized to accomplish the same function as the holes 26 such as using c clamps not shown or certain adhesive materials not shown finally it should be noted that the vise ball 20 and attachment plate 24 are rotatable through substantially ninety degrees 90 u00b0 such that an object mounted on the attachment plate 24 can be worked on in a virtually unlimited number of orientations and positions which is a substantial improvement over the prior art to releasably secure the vise ball 20 in a fixed orientation during use the present invention includes a circumferential crown 30 which is mounted to and above the shoulder plate 16 the crown 30 releasably secures the vise ball 20 in a fixed orientation during use thus preventing the object mounted to the attachment plate 24 from moving in the preferred embodiment as best seen in fig1 and 4 the crown 30 consists of the following elements a generally u shaped support strut 32 that is preferably constructed of steel and is approximately six to ten inches 6 u2033 10 u2033 high approximately six to ten inches 6 u2033 10 u2033 wide and approximately one inch 1 u2033 thick three 3 generally rectangular support struts 34 a 34 b and 34 c that are six to ten inches 6 10 u2033.