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2. Photochemical machining - Wikipedia

   en.wikipedia.org/wiki/Photochemical_machining

   Photochemical machining (PCM), also known as photochemical milling or photo etching, is a chemical milling process used to fabricate sheet metal components using a photoresist and etchants to corrosively machine away selected areas. This process emerged in the 1960s as an offshoot of the printed circuit board industry.

3. Chemical milling - Wikipedia

   en.wikipedia.org/wiki/Chemical_milling

   Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape. [1] [2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is ...

4. List of scale model kit manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_scale_model_kit...

   Occidental Réplicas (Portugal) - Brand of a plastic plant for home products, that started to build models that were used or in use by the Portuguese armed forces current and past, age of discovery ships naus caravelles etc, spitfire Fiat G-91 fighters and T-6 Texan, and so on, sold several sprues molds to Revell and Italeri for several kits.

5. Photolithography - Wikipedia

   en.wikipedia.org/wiki/Photolithography

   The root words photo, litho, and graphy all have Greek origins, with the meanings 'light', 'stone' and 'writing' respectively. As suggested by the name compounded from them, photolithography is a printing method (originally based on the use of limestone printing plates) in which light plays an essential role.

6. Etching - Wikipedia

   en.wikipedia.org/wiki/Etching

   However, from 1880 to 1950 a photo-mechanical ("line-block") variant was the dominant form of commercial printing for images. A similar process to etching, but printed as a relief print, so it is the "white" background areas which are exposed to the acid, and the areas to print "black" which are covered with ground. Blake's exact technique ...

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