A welding electrode for resistance spot welding includes a weld face comprising rings of ridges that project outwardly from a base surface of the weld face. The rings of ridges are positioned on the weld face to contact and impress into a sheet metal workpiece surface during resistance spot welding. If the welding electrode is used during resistance spot welding of light metal alloy workpieces, such as those of aluminum alloy or magnesium alloy, the rings of ridges on the weld face can contribute to improved welding performance.

A wafer edge trim blade includes a round blade body and at least one slot formed inward from an outside edge of the round blade body. The at least one slot is configured to remove debris generated during wafer edge trimming using the wafer edge trim blade.

Disclosed is a method of fabricating bitumen impregnated cellulose ridge tiles, each ridge tile having the general shape of a profiled ridge tile plate of cross-section symmetrical about a vertical longitudinal midplane and that includes a downwardly concave central ridge extended laterally on either side by a flat that terminates in a downwardly concave corrugation, the ridge tile further including a series of ribs at each longitudinal end, the panel being in the form of a section member of cross-section that is made up by juxtaposing at least two cross-sections, each identical to the cross-section of the ridge tile plate, with transverse ribs in the vicinity of the longitudinal ends of the panel and on either side of at least one virtual transverse separation line extending between longitudinal panel edges. The panel is cut along a longitudinal line between the juxtaposed ridge tile sections.

A slitting tool configured for fine-tuning thereof includes basic body, which in turn includes a body portion and a cutting portion extending therefrom. The slitting tool includes a biasing screw which is seated in a biasing bore and is configured to adjust the position of the cutting portion. The biasing screw is configured to engage a biasing surface of the body portion to adjust the cutting portion's position. The biasing surface is oblique relative to the biasing screw for retarding movement of the biasing screw a fine-tuned position.

A cutting disc for cutting foodstuffs, intended for a receptacle of an appliance of the vegetable cutting type, includes: a rotary drive hub, a supporting disc firmly secured to the hub, and at least one blade attached on the supporting disc and extending radially from the hub. The blade comprises a cutting edge with the shape of an S, the convex portion of the S being located on the side of the hub so as to cause the foodstuffs to slide against the cutting edge from a central area of the receptacle towards a middle portion of the cutting edge under the action of the rotation of the supporting disc and of the blade, and the concave portion of the S being configured as a sickle in order to cause the foodstuffs to slide against the cutting edge from a peripheral area of the receptacle towards the middle portion.

A media cutting system is disclosed comprising a die cutter including a cutting surface and a plurality of dies stored proximate the cutting surface, a die exchange system including a die storage system configured to support the plurality of dies and a die transport system, and a computer system comprising a controller configured to operate the die transport system and the die cutter. A die exchange system and methods of making and using the die exchange system also are disclosed.

Nonmetallic tools such as rotary bits, circular blades, and scything tools are described that may be suitable for removing cured flexibilized epoxy gap-filler materials from gaps between soft composite materials. The nonmetallic tools may be formed from various plastic or composite materials that are sufficiently hard to cut through the gap-filler material while being sufficiently soft to avoid damaging adjacent areas of soft composite materials. Methods for using the nonmetallic tools may include attaching the nonmetallic tools to a suitable machine-driven tool and contacting the nonmetallic tools to a material to be cut, shaped, or drilled.