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  2. Hole punch - Wikipedia

    en.wikipedia.org/wiki/Hole_punch

    The diameter of the holes varies between manufacturers, with typical values being 1 ⁄ 4 to 5 ⁄ 16 inch (6 to 8 mm). The 5 ⁄ 16 value is most commonly used, as it allows for looser tolerances in both ring binder and paper punching. The distance to the paper edge also varies, with 1 ⁄ 2 inch (13 mm) hole

  3. Hardboard - Wikipedia

    en.wikipedia.org/wiki/Hardboard

    Perforated hardboard, also called pegboard, is tempered hardboard that has a uniform array of 18-or-1 ⁄ 4-inch (3.2 or 6.4 mm) holes in it, into which tool-hanging hooks or store fixtures can be placed.

  4. Punching - Wikipedia

    en.wikipedia.org/wiki/Punching

    The punch force required to punch a piece of sheet metal can be estimated from the following equation: [4] F = 0.7 t L ( U T S ) {\displaystyle F=0.7tL(UTS)} Where t is the sheet metal thickness, L is the total length sheared (perimeter of the shape), and UTS is the ultimate tensile strength of the material.

  5. Perforated hardboard - Wikipedia

    en.wikipedia.org/wiki/Perforated_hardboard

    An inexpensive wood such as pine is often used, and it may be chemically treated for strength and fire retardant characteristics or turned into plywood first. Perforated wood may be mounted as a thin strip instead of the more square shape of perforated hardboard. [citation needed] Metal pegboard systems are usually made out of steel. Metal ...

  6. Punch (tool) - Wikipedia

    en.wikipedia.org/wiki/Punch_(tool)

    A punch is a tool used to indent or create a hole through a hard surface. They usually consist of a hard metal rod with a narrow tip at one end and a broad flat "butt" at the other. When used, the narrower end is pointed against a target surface and the broad end is struck with a hammer or mallet , causing the blunt force of the blow to be ...

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  8. Wood's metal - Wikipedia

    en.wikipedia.org/wiki/Wood's_metal

    Wood's metal. Wood's metal, also known as Lipowitz's alloy or by the commercial names Cerrobend, Bendalloy, Pewtalloy and MCP 158, is a metal alloy that is useful for soldering and making custom metal parts, but its fumes are toxic, as well as being toxic on skin exposure. The alloy is named for Barnabas Wood, who invented and patented the ...

  9. Plywood - Wikipedia

    en.wikipedia.org/wiki/Plywood

    The most commonly used thickness range is from 18 to 3 inches (3.2–76.2 mm). The sizes of the most commonly used plywood sheets are 4 by 8 feet (1,220 mm × 2,440 mm) [20] which was first used by the Portland Manufacturing Company, who developed modern veneer core plywood for the 1905 Portland World Fair. A common metric size for a sheet ...