Patent ID: 8444456

Claim:
An electrode polishing assembly comprising an electrode securing platen, a plurality of electrode locating fasteners, and an electrode, wherein: the electrode securing platen comprises an electrode facing surface, an assembly support surface, and a plurality of variance cancelling passages extending through the electrode securing platen from the electrode facing surface to the assembly support surface; the variance cancelling passages are arranged at the electrode facing surface according to a plurality of hole-pattern locations, such that each of the variance cancelling passages are no more than a platen tolerance distance away from one of the hole-pattern locations; each of the variance cancelling passages comprise a variance cancelling passage diameter, such that the variance cancelling passage diameter is greater than or equal to a minimum passage size and less than or equal to a maximum passage size; each of the electrode locating fasteners comprises a threaded electrode engagement portion, an electrode spacing shoulder extending from the threaded electrode engagement portion, a variance cancelling shoulder extending from the electrode spacing shoulder, a threaded platen clamping portion extending from the variance cancelling shoulder, and a threaded nut that engages the threaded platen clamping portion; the electrode comprises a plurality of threaded orifices arranged at a platen facing surface according to the hole-pattern locations, such that each of the threaded orifices are no more than an electrode tolerance distance away from one of the hole-pattern locations; each of the electrode locating fasteners are engaged with the electrode and have a concentricity less than or equal to a concentric distance, such that the threaded electrode engagement portion overlaps one of the threaded orifices; the variance cancelling shoulder comprises a positioning shoulder diameter, such that the positioning shoulder diameter is greater than or equal to a minimum shoulder size and less than or equal to a maximum shoulder size; the electrode locating fasteners clamp the electrode securing platen between the threaded nut and the electrode spacing shoulder, such that the variance cancelling shoulder is at least partially within one of the variance cancelling passages; a minimum position stack-up is equal to the minimum passage size minus the maximum shoulder size; a maximum position stack-up is equal to the maximum passage size minus the minimum shoulder size; and the maximum position stack-up is greater than the minimum position stack-up.