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  2. Desoldering - Wikipedia

    en.wikipedia.org/wiki/Desoldering

    A typical spring-loaded solder sucker A solder sucker partially dismantled showing the spring. A desoldering pump, colloquially known as a solder sucker, is a manually-operated device which is used to remove solder from a printed circuit board.

  3. Dutchman (repair) - Wikipedia

    en.wikipedia.org/wiki/Dutchman_(repair)

    A dutchman, or in some uses graving piece, is a matching piece of good material used to replace a relatively small damaged area that has been cut out of a larger item, to avoid having to replace the entire item; or, any of various techniques for accomplishing such a repair.

  4. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    rough turn, rough turned; room temperature: Rough-turned means turned on a lathe but not finished to a final machined dimension and surface roughness. Can apply to bar stock or to parts in-process. Room temperature is sometimes abbreviated "RT" within tables of specs for finishing operations (plating, painting, etc.). RTP: release to production

  5. AutoCAD - Wikipedia

    en.wikipedia.org/wiki/AutoCAD

    AutoCAD is a 2D and 3D computer-aided design (CAD) software application developed by Autodesk. [1] It was first released in December 1982 for the CP/M and IBM PC platforms as a desktop app running on microcomputers with internal graphics controllers . [ 2 ]

  6. Detachment of wall paintings - Wikipedia

    en.wikipedia.org/wiki/Detachment_of_wall_paintings

    In their study, Mora, Mora, and Philippot cite four reasons for the "over-use" of detachment: the 19th-century division of the arts that privileged a "painting" divorced from its architectural and historical context; insensitivity to the aesthetic consequences, often partially concealed by restorers; the curiosity of art historians looking for sinopie; or perceived savings relating to the ...

  7. Mechanical systems drawing - Wikipedia

    en.wikipedia.org/wiki/Mechanical_systems_drawing

    Allowance for the service at its widest point for spaces between pipe and duct runs, for insulation, standard fitting dimensions, and joint widths Installation details provided from shop drawings Installation working space; space to facilitate commissioning and space to allow on-going operation and maintenance in accordance with the relevant ...

  8. Cold water pitting of copper tube - Wikipedia

    en.wikipedia.org/wiki/Cold_water_pitting_of...

    Particles of scale that do not adhere to the walls and are not washed away tend to fall into the bottom of the tube producing a coarse porous deposit. Air pockets that develop in horizontal runs disrupt the formation of protective scales in two areas: the water lines at the sides, and the air space at the top of the tube.

  9. Fusion bonded epoxy coating - Wikipedia

    en.wikipedia.org/wiki/Fusion_bonded_epoxy_coating

    Depending on the FBE coating system, full cure can be achieved in less than one minute to few minutes in case of long cure FBE's, which are used for internal pipe coating applications. Rebars are coated in a similar manner as coating application, on the exterior of pipes. For FBE coating application on the interior of pipe surface, a lance is used.