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  2. Roof seamer - Wikipedia

    en.wikipedia.org/wiki/Roof_seamer

    This shows a cross-section profile of the seam. Mechanically seamed standing seams (double locked) A roof seamer is a portable roll forming machine that is used to install mechanically seamed structural standing-seam metal roof panels, as part of an overall metal construction building envelope system. The machine is small and portable to be ...

  3. Built up edge - Wikipedia

    en.wikipedia.org/wiki/Built_up_edge

    The built up edge effectively changes tool geometry and rake steepness. It also reduces the contact area between the chip and the cutting tool, [1] leading to: A reduction in the power demand of the cutting operation. [1] Slight increase in tool life, since the cutting is partly being done by the built up edge rather than the tool itself. [4]

  4. Hemming and seaming - Wikipedia

    en.wikipedia.org/wiki/Hemming_and_seaming

    Hemming and seaming are two similar metalworking processes in which a sheet metal edge is rolled over onto itself. Hemming is the process in which the edge is rolled flush to itself, while a seam joins the edges of two materials. [1] Hems are commonly used to reinforce an edge, hide burrs and rough edges, and improve appearance. [1]

  5. Rake angle - Wikipedia

    en.wikipedia.org/wiki/Rake_angle

    Negative rake: A tool has a negative rake angle when the face of the cutting tool slopes away from the cutting edge at outer side. Positive rake angles generally: Make the tool more sharp and pointed. This reduces the strength of the tool, as the small included angle in the tip may cause it to chip away. Reduce cutting forces and power ...

  6. Tool wear - Wikipedia

    en.wikipedia.org/wiki/Tool_wear

    In machining, tool wear is the gradual failure of cutting tools due to regular operation. Tools affected include tipped tools, tool bits, and drill bits that are used with machine tools. Types of wear include: flank wear in which the portion of the tool in contact with the finished part erodes. Can be described using the Tool Life Expectancy ...

  7. Rake (tool) - Wikipedia

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

    Larger tools (or lawnmower attachments) are more often used for large areas of de-thatching or soil preparation. A concrete rake is a heavy-duty tool with a flat edge for spreading and smoothing wet concrete and a curved side for scooping. Made of durable materials, it is essential for leveling concrete surfaces in construction. [2]

  8. Bargeboard - Wikipedia

    en.wikipedia.org/wiki/Bargeboard

    Bargeboard, 1908 illustration. A bargeboard or rake fascia is a board fastened to each projecting gable of a roof to give it strength and protection, and to conceal the otherwise exposed end grain of the horizontal timbers or purlins of the roof.

  9. McLeod (tool) - Wikipedia

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

    A McLeod tool (or rakehoe) is a two-sided blade — one a rake with coarse tines, one a flat sharpened hoe — on a long wooden handle. It is a standard [1] tool during wildfire suppression and trail restoration. [2] The combination tool was created in 1905 by Malcolm McLeod, a United States Forest Service ranger at the Sierra National Forest ...

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