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2. Laser engraving - Wikipedia

   en.wikipedia.org/wiki/Laser_engraving

   Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10 to 30 watts, excellent engravings are made as the enamel is removed quite cleanly. Much laser engraving is sold as exposed brass or silver-coated steel lettering on a black or dark-enamelled background.

3. Laser cutting - Wikipedia

   en.wikipedia.org/wiki/Laser_cutting

   The CO 2 laser is suited for cutting, boring, and engraving. The neodymium (Nd) and neodymium yttrium-aluminium-garnet lasers are identical in style and differ only in the application. Nd is used for boring and where high energy but low repetition are required. The Nd:YAG laser is used where very high power is needed and for boring and engraving.

4. Engraving - Wikipedia

   en.wikipedia.org/wiki/Engraving

   Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...

5. Laser metal deposition - Wikipedia

   en.wikipedia.org/wiki/Laser_Metal_Deposition

   Laser metal deposition (LMD) is an additive manufacturing process in which a feedstock material (typically a powder) is melted with a laser and then deposited onto a substrate. [1] A variety of pure metals and alloys can be used as the feedstock, as well as composite materials such as metal matrix composites .

6. Blue laser - Wikipedia

   en.wikipedia.org/wiki/Blue_laser

   metal vapor, ionized gas lasers of helium-cadmium at 442 nm and 10–200 mW [5] argon-ion lasers at 458 and 488 nm [ 5 ] Lasers emitting wavelengths below 445 nm appear violet, but are nonetheless also called blue lasers.

7. Numerical control - Wikipedia

   en.wikipedia.org/wiki/Numerical_control

   A CNC metal lathe with the door open. In machining , numerical control , also called computer numerical control ( CNC ), [ 1 ] is the automated control of tools by means of a computer . [ 2 ] It is used to operate tools such as drills , lathes , mills , grinders , routers and 3D printers .