Three systems for the destruction of the data storage portion of electronic media storage devices such as hard disk drives, solid state drives and hybrid hard drives. One system utilizes a mill cutter with which the hard drive has relative motion in the direction of the axis of the mill cutter to destroy the data storage portion. A second system utilizes a laser to physically destroy the data storage portion. The third system utilizes a chemical solvent to chemically destroy the data storage portion.

A vane tip machining fixture assembly includes a first clamp ring mountable to a fixture, the first clamp ring includes a rigid back ring mounted to a resilient ring.

An apparatus for clamping a work piece is provided. The apparatus includes a base plate to support the work piece; at least one clamp body fixed to the base plate; at least one fastener fixing the at least one clamp body to the base plate; and a protruding piece having at least a portion thereof inserted into the clamp body and an end thereof extending from a lateral face of the clamp body, the protruding piece including a hollow point tip at the opposite end, where outer and inner lateral surfaces of the hollow point tip join to define a circular sharp edge at the opposite end of the protruding piece.

Three systems for the destruction of the data storage portion of electronic media storage devices such as hard disk drives, solid state drives and hybrid hard drives. One system utilizes a mill cutter with which the hard drive has relative motion in the direction of the axis of the mill cutter to destroy the data storage portion. A second system utilizes a laser to physically destroy the data storage portion. The third system utilizes a chemical solvent to chemically destroy the data storage portion.

An axially elongate dental machining portion includes a machining region machinable by a dental machining device, and a fixing region for fixing the axially elongate dental machining portion to a holder of the dental machining device. In the fixing region is a fixing projection oriented transversely relative to a longitudinal axis. In a condition of the machining portion being mounted in the holder, the fixing projection bears against a holding nose positioned in complementary relationship on the holder. The machining region has a machinable surface which has a maximum spacing relative to the longitudinal axis, measured normal to the longitudinal axis, and the fixing projection has a maximum spacing relative to the longitudinal axis, measured normal relative to the longitudinal axis, that is greater than the maximum spacing of the machinable surface relative to the longitudinal axis.

A cluster mill blank includes a framework constructed to cooperate with a blank holder of an existing CAD/CAM system, and a plurality of sub-blanks attached to the framework forming an addressable matrix or cluster blank. CAD/CAM systems including such a framework, as well as associated methods are described.

A method for introducing recesses in workpiece surfaces to be machined, with the aid of at least one tool. The invention is characterized in that two workpiece surfaces that face each other are simultaneously machined using the tool in order to introduce recesses into said workpiece surfaces.

Adapters and dental mill blanks are provided which permit use of dental mill blanks of various shapes in dental mills designed for use with only a single shape. In particular, a mill blank assembly may include an adapter which allows for the use of rectangular, framed dental blanks in milling machines designed for use with puck-like milling blanks.

A cluster mill blank includes a framework constructed to cooperate with a blank holder of an existing CAD/CAM system, and a plurality of sub-blanks attached to the framework forming an addressable matrix or cluster blank. CAD/CAM systems including such a framework, as well as associated methods are described.

A universal clamping assembly for a key duplicating machine is described. The clamping assembly comprises a housing having a pair of opposed flat guide rail support surfaces and a sliding tip clamp is guidingly displaceable along each of the guide rail support surfaces and are urged against the tip of the key and key blank blades which are positioned on the guide rails. A pivoting clamp is displaceably engageable on a forward top edge of the respective key blades to apply a downward force on the key blades to ensure that the lower edge of the key blades is firmly resting against the guide rail support surfaces. A pair of cam operated side clamps is actuable to further clamp the blade on their sides at two distinct areas. The universal clamping assembly is capable of accommodating different key and key blank lengths, widths and thicknesses. The method of clamping the key and key blank is also described.