Patent ID: 8469016

Claim:
A method for making stone countertops and the like, comprising: providing a rotary drive adapted for axially rotating an associated tool with respect to a stationary stone slab having at least one generally flat face, and being shiftable between first and second angular positions relative to the face of the stone slab; fabricating a rigid cutting tool shank having an outer end thereof, and an inner end thereof shaped for detachable mounting in the rotary drive and rotating axially therewith; operably connecting a flat circularly-shaped saw blade with the shank for rotation therewith; fabricating a cup-shaped cutting blade configured to make an arcuate cut through the stone slab when the rotary drive is in the second angular position, with a frusto-conical sidewall which is inclined radially outwardly from the shank and includes an outer marginal edge with a plurality of axially protruding cutting teeth, and a plurality of cutting pads embedded in the sidewall and protruding radially outwardly from an outside surface of the sidewall and radially inwardly from an inside surface of the sidewall; fixedly mounting the cup-shaped cutting blade on the outer end of the shank; detachably mounting the inner end of the shank in the rotary drive for rotation therewith; shifting the rotary drive to the first angular position and cutting two mutually angled straight cuts through the stone slab to define straight portions of an inside corner in the stone slab; and shifting the rotary drive to the second angular position at a location generally aligned with an intersection point of the mutually angled straight cuts, and advancing the cup-shaped cutting blade into and through the stone slab with the sidewall oriented generally perpendicular to the face of the stone slab to cut an arcuate portion of the inside corner therein with reduced waste.