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PETG is both thermoformable and vacuum-formable, and can tolerate a tremendous amount of pressure without cracking. Although PETG is naturally clear, it takes color easily during processing. It can be injection molded into a variety of shapes, or extruded into sheets.http://www.pvcpetsheet.com/pet....g-film-roll/matt-rig
It is a hard cemented carbide composite made from tungsten carbide powder and a suitable binder material. Such as cobalt. The most common tungsten carbide nibs are made from medium grain size tungsten carbide powder with 6-13% cobalt binder.
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