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  2. Snips - Wikipedia

    en.wikipedia.org/wiki/Snips

    Tinner's snips, also known as tinner snips or tin snips, are one of the most popular type of snips. They are defined by their long handles and short blades. They usually have extra wide jaws and are made of drop forged carbon steel. Depending on the size of the blade, tin snips can cut between 24 and 16 gauge cold rolled low-carbon tin. They ...

  3. Shear (sheet metal) - Wikipedia

    en.wikipedia.org/wiki/Shear_(sheet_metal)

    They are designed to cut straight lines and relatively large radius curves. They are advantageous over a bandsaw because there is not a size limit. Large versions can cut sheet metal up to 12 gauge. [5] An alternative to the hand tools are hydraulically powered tools attached to heavy machinery. They are usually used to cut materials that are ...

  4. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    The permissible exposure limit (PEL or OSHA PEL) is a legal limit in the United States for exposure of an employee to a chemical substance or physical agent such as high level noise. Permissible exposure limits were established by the Occupational Safety and Health Administration (OSHA). Most of OSHA's PELs were issued shortly after adoption of ...

  5. Sheet metal - Wikipedia

    en.wikipedia.org/wiki/Sheet_metal

    The process of flattening metal sheets required large rotating iron cylinders which pressed metal pieces into sheets. The metals suited for this were lead, copper, zinc, iron and later steel. Tin was often used to coat iron and steel sheets to prevent it from rusting. [3] This tin-coated sheet metal was called "tinplate." Sheet metals appeared ...

  6. Neither "tin" foil nor "tin" cans still use tin as a primary material. Aluminum foil has replaced tin foil in almost all uses since the 20th century; tin cans now primarily use steel or aluminum as their main metal. [189] [190] [191]

  7. Engineering tolerance - Wikipedia

    en.wikipedia.org/wiki/Engineering_tolerance

    If the fundamental deviation is greater than zero, the bolt will always be smaller than the basic size and he hole will always be wider. Fundamental deviation is a form of allowance, rather than tolerance. International Tolerance grade This is a standardised measure of the maximum difference in size between the component and the basic size (see ...

  8. Diagonal pliers - Wikipedia

    en.wikipedia.org/wiki/Diagonal_pliers

    The term snips commonly refers to larger items, not to those used for cutting electrical wiring etc. In Canada, Australia and New Zealand too, the items are often referred to as side cutters . Diags , dykes or dikes is jargon used especially in the US electrical industry to describe diagonal pliers.

  9. Short-term exposure limit - Wikipedia

    en.wikipedia.org/wiki/Short-term_exposure_limit

    A short-term exposure limit (STEL) is the acceptable average exposure over a short period of time, usually 15 minutes as long as the time-weighted average is not exceeded. STEL is a term used in exposure assessment , occupational health , industrial hygiene and toxicology .