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| Plasma
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High pressure ionized gas, a good conductor of electricity and can be affected by a magnetic field, which is used in a cutting process that uses an electric arc to ionize the gas, turning it to plasma. |
| Plasma spraying
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Metal spraying process that is used to apply a hard surfacing to a softer material to add wear resistance while still retaining their original characteristic. This process uses an electric arc between an electrode and a nozzle, through which an ionized gas flows to melt the coating and to spray it onto the material in question. |
| Plaster
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A cementitious material or combination of cementitious material and aggregate that, when mixed with a suitable amount of water, forms a plastic mass or paste which when applied to a surface, adheres to it and subsequently hardens, preserving in a rigid state the form or texture imposed during the period of plasticity; also the placed and hardened mixture. |
| Plaster board
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Another term for drywall, gypsum or plaster wrapped construction material, produced in large sheets to be nailed to wall studs. |
| Plaster ears
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Projecting pieces of wood on the sides of cabinets, which allow the cabinet to be trimmed to completely fill a space. Alternately, the metal ear-like tabs on electrical boxes, which keep the box from falling through the wall opening. |
| Plaster ground
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A nailer strip included in plaster walls to act as a gage for thickness of plaster and to give a nailing support for finish trim around openings and near the base of the wall. |
| Plaster grounds
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Temporary guides made of strips of wood that are attached to surfaces being plastered, to use as a guide to keep surfaces smooth and the thickness consistent. |
| Plaster knife
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| Plaster lath
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The backing fastened to structural members onto which plaster is applied. Lath originally was strips of wood fastened the framing members. Today, gypsum or metal lath are used the most commonly used types of lath because they are inexpensive and can be installed in sheets, covering a large area very quickly |
| Plaster of paris
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A quick setting, pure white powder, used to set bathroom wall fixtures such as towel racks or used by craft groups for pouring molds and making plaster objects. |
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