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Cream forms are usually attached to paper or film. Polishing creams are commonly used to remove thin layers of insoluble surface deposits such as calcium. These creams can also remove surface dirt and marks made by tools. The best creams of ceramic do not have oil, grease, or bleach as additives and are used only on glazed ceramics. [4]: p.86–87
In plastic injection, a faint mark called a witness mark (or witness line) will occur along the parting line. [1] This is unavoidable and is usually accepted despite the minor aesthetics issue. However, some part surfaces (e.g. when used for sealing [ 5 ] ) cannot tolerate witness marks, and thus either the marks must be removed post-molding or ...
Permanent markers are used for writing on metals, plastics, ceramics, wood, stone, cardboard etc. However, the mark made by them is semi-permanent on some surfaces. Most permanent marker ink can be erased from some plastic surfaces (like polypropylene and teflon) with little rubbing pressure. They can be used on ordinary paper, but the ink ...
How to remove ink stains from clothes, including how to remove ballpoint pen ink, permanent marker and felt-tip pen ink, plus how to get rid of ink from leather
Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting ), glasses , elastomers , confections , and most commonly ...
Flow mark causes vary for specific parts and production lines due to the variability in molds, machines, and materials. For the most part they are due to varying cooling speeds of the material as it flows through the mold. [2] The different prevention methods for varying cooling speeds are as follows:
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