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2. Poly(methyl methacrylate) - Wikipedia

   en.wikipedia.org/wiki/Poly(methyl_methacrylate)

   The type of acrylic used in tanning beds is most often formulated from a special type of polymethyl methacrylate, a compound that allows the passage of ultraviolet rays. Sheets of PMMA are commonly used in the sign industry to make flat cut out letters in thicknesses typically varying from 3 to 25 millimeters (0.1 to 1.0 in).

3. Cast acrylic - Wikipedia

   en.wikipedia.org/wiki/Cast_acrylic

   Cast acrylic has a better ability to be reworked hot and it is known for its superior surface finish and optical properties. Also cast acrylic is more scratch resistant than extruded acrylic. Cast acrylic is also preferred over extruded in applications that require machinings, such as turning on Engine Lathe or milling/drilling.

4. Plywood - Wikipedia

   en.wikipedia.org/wiki/Plywood

   The most commonly used thickness range is from 1 ⁄ 8 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 ...

5. Drywall - Wikipedia

   en.wikipedia.org/wiki/Drywall

   Lengths up to 16 feet (4.9 m) are common; the most common is 8 feet (2.4 m). Common thicknesses are 1 ⁄ 2 and 5 ⁄ 8 inch (13 and 16 mm); thicknesses of 1 ⁄ 4, 3 ⁄ 8, 3 ⁄ 4, and 1 inch (6, 10, 19, and 25 mm) are used in specific applications. In many parts of Canada, drywall is commonly referred to as Gyproc.

6. Polyethylene terephthalate - Wikipedia

   en.wikipedia.org/wiki/Polyethylene_terephthalate

   Resin identification code 1 Alternate 1 Alternate 2 While most thermoplastics can, in principle, be recycled, PET bottle recycling is more practical than many other plastic applications because of the high value of the resin and the almost exclusive use of PET for widely used water and carbonated soft drink bottling.

7. Pixel density - Wikipedia

   en.wikipedia.org/wiki/Pixel_density

   For example, a 15-inch (38 cm) display whose dimensions work out to 12 inches (30.48 cm) wide by 9 inches (22.86 cm) high, capable of a maximum 1024×768 (or XGA) pixel resolution, can display around 85 PPI, or 33.46 PPCM, in both the horizontal and vertical directions. This figure is determined by dividing the width (or height) of the display ...