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Headlight restoration or plastic headlight restoration is the act of restoring aged headlight lenses that have become discolored or dull due the original factory UV protective coating degrading primarily due to UV light and other environmental factors such as road debris impact (stones, sand, etc.) rain, and exposure to caustic chemicals.
Often, vehicles require plastic headlight restoration as headlights can become foggy over time due to weathering. [20] In a complete restoration, the repair and refinishing of the car's body and frame must again go through the careful inspection and subsequent repair and recoating as necessary to bring the car to as first sold condition.
One type of optical coating is an anti-reflective coating, which reduces unwanted reflections from surfaces, and is commonly used on spectacle and camera lenses. Another type is the high-reflector coating , which can be used to produce mirrors that reflect greater than 99.99% of the light that falls on them.
Violin varnishing is a multi-step process involving some or all of the following: primer, sealer, ground, color coats, and clear topcoat. Some systems use a drying oil varnish as described below, while others use spirit varnish made of resin(s) dissolved in alcohol. Touchup in repair or restoration is only done with solvent based varnish.
A primary advantage of curing with ultraviolet light is the speed at which a material can be processed. Speeding up the curing, or drying step, [11] in a process can reduce flaws and errors by decreasing time that an ink or coating spends as wet. This can increase the quality of a finished item, and potentially allow for greater consistency.
In the 1990s, this method was performed by the Doctor Who Restoration Team, [4] and several colour Doctor Who serials were subsequently released on VHS. [4] Combining the recorded colour signals with the monochrome telerecordings is a complex task requiring digital processing (for example, matching the different screen sizes of the two ...
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