Patent ID: 7028430

Claim:
A variable weight diamond jig comprising: first and second symmetrical plates, each of the plates having an elongated diamond shape and opposing longitudinal ends, each of the plates having a flat periphery and a central portion defining a half-shell, the two half-shells defining a cavity when the two plates are abutted and in registry, each of the plates having a first keyhole slot defined in the flat periphery at one of the opposing longitudinal ends and a second keyhole slot defined in the flat periphery at an other of the opposing longitudinal ends; a first spring-wire snap lock and a second spring-wire snap lock removably inserted in the first and second slots, respectively, each of the snap locks having an eyelet defined at a first end, a U-shaped bend at a second end, and a U-shaped portion at an intermediate extent thereof, wherein the U-shaped bend has upper and lower legs extending therefrom which are opposed to each other, each of the snap locks comprising a shaft member, each said shaft member terminating in a first end defining the eyelet and a second end terminating in the U-shaped portion, the first end of the shaft portion being wrapped about a portion of the lower leg oppositely of the eyelet so as to define the eyelet, the second end of the shaft portion has a first section that extends downwardly from the upper leg along one side of the lower leg, a second section that extends from the first section transversely under the lower leg, and a third section that extends upwardly from the second section on an other side of the lower leg opposite the first section whereby the sections define the U-shaped portion, the flat periphery of the first and second plates being locked together in abutting relationship by the shaft member of each snap lock when the shaft members respectively extend through the first and second keyhole slots; and a ballast disposed within the cavity.