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Sub-surface laser engraving is the process of engraving an image in a transparent solid material by focusing a laser below the surface to create small fractures. Such engraved materials are of high-grade optical quality (suitable for lenses, with low dispersion ) to minimize distortion of the beam.
A laser glass sculpture of a caffeine molecule. A bubblegram (also known as laser crystal, Subsurface Laser Engraving, 3D crystal engraving or vitrography) is a solid block of glass or transparent plastic that has been exposed to laser beams to generate three-dimensional designs inside.
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 ...
The best personalized Valentine's Day gifts are a great way to show the special people in your life how much you love and appreciate them. 20 best personalized Valentine's Day gifts of 2025 that ...
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.
David Rittenhouse engraved some border designs for the 10 May 1775 Continental currency [14] and 25 March 1776 Colony of New Jersey 6£ note. [15] Francis Hopkinson does not appear to have done engraving, but he is credited with the designs for border-cuts, emblems, and mottos on three issues of Continental currency in 1778–1779. [16]
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