One of the more vexing problems facing a toolmaker, is when a part needs to be radially aligned very precisely while also being very concentric with the spindle.

   In the normal spin-fixure the part can only be partially clamped while aligning both angularity and concentricity, because the part itself must shift in the holder. When the part is given the final clamping, usually it will lose concentricity or shift radially, and the procedure must be repeated until they both match after final clamping. Very time consuming.

   The Spinmaster solves that problem by being able to finely adjust the spindle radially AFTER concentricity is established and the part firmly clamped.

   With the Spinmastr, the toolmaker just "eyeballs" angularity and clamps the part tightly.

    After aligning concentricity by shifting the holder, for example a vee block holder, the toolmaker merely locks the shotpin into the nearest appropriate position, loosens (4) screws in the rear of the Spinmastr, rotates the spindle to the desired position, tightens the rear screws and it's done. Very fast.

The concentricity and dial readings do not change during this procedure.

A savings of 20 minutes per setup is common when the zero null is used.