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Pls do this exercise for me!!!
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http://www.youtube.com/watch?v=5-b2q3jQ414&feature=player_embedded#!
Colored pencils come in basic color packages for school children, ___1___ sets for architects and other professionals, and elaborate collections of shades for the serious artist. It isn't so much the color ___2___ that determines the quality, but the pigment concentration in the lead.
The core of a colored pencil doesn't ___3___ contain any lead. It's composed of pigments, minerals and binding agents.
This company invented a unique type of colored pencil. The lead composition is such that it allows you to brush on a bit of water after you draw to create the effect of ___4___paints.
Colored pencils start with a combination of pigments. Every shade has a specific pigment recipe. They produce a large ___5___ of one shade at a time. Following that color's recipe, they meticulously weigh the different portions of ingredients. Then they boil a specific quantity of water and ___6___ and add binding agents: a secret blend of gums, resins or waxes. The ingredients expand in hot water, forming a paste. Workers then mix the pigments into this paste. The next machine processes the paste into fine chunks intensifying the color. The chunks move by conveyor belt with the cylinder that compresses them then feeds them into an extrusion ___7___.
The extruder squeezes the paste in a continuous stream that's the diameter of the pencil lead. In a top secret process, the next machine chops this long lead into pencil-length leads. But the leads can't write just yet. They're ___8___ in a vat filled with a mixture of chemical waxes. These waxes coat and impregnate the leads. in this case, red ones. Wax is a color delivery vehicle. As you write, it rubs off and adheres to the paper; taking pigment with it. With the leads now finished, the factory subjects random samples to quality control testing; including a break test and a durability test, in which each lead must yield ___9___ of writing.
This company makes its pencil bodies from cedar wood. This machine carves grooves for the leads then coats the surface with a thin layer of glue. The planks pass under a wheel that places the leads. Then, through another machine that slips a second grooved plank on top. The next machine carves the hexagonal shape then, slices the ___10___ apart. One at a time, the pencils shoot through a vat of colored varnish. Their exterior is now the same color as the lead inside. Once the varnish dries, a heat stamp burns the company name and color number into the wood, filling the lettering with colored ___11___. Then the pencils roll across an abrasive wheel, sharpening as they go. The unsharpened end gets a cap of varnish either in white or the same shade as the pencil lead. The factory's equipment feeds the appropriate colors to the packaging area. As the pencils slide into their grooved tray, Workers visually inspect ___12___ and every one. From pigments and planks, to an artistic medium, the story behind the making of colored pencils is ___13___ black and white. (END)
I'M BAD AT LISTENING
Chingy
