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Home > Glass Reference & Technology > Decoration on Glass
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Needle etching
Needle etching was once of the earliest mechanized glass etching processes. The "Geometric Etching Machine" was invented by John Northwood in the early 1860s, and it or variations of it were used well into the 20th C. (Hadjamach, 1991; shows a photo of it pg. 183).

The machine used complicated gearing to move a needle or set of needles over glass that had been covered in resist (such as beeswax) that protected it from the effects of acid. The object was then dipped in acid, which etched the pattern that had been created by the needles.

The motion of the needles followed a template, and the pattern is repeated again and again, with the needles never leaving the glass. There are no "loose ends" in needle etchings. The lines are also of uniform width throughout the object.
green_silver_overlay_vase_1~0.jpg Marquetry.jpg needle_etch_success.jpg pantograph_etching.jpg plate_etching.jpg
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Filename:needle_etch_success.jpg
Album name:kristi / Decoration on Glass
Keywords:etch etched
File Size:91 KB
Date added:Sep 10, 2008
Dimensions:673 x 446 pixels
Displayed:121 times
URL:http://www.yobunny.org.uk/glassgallery/displayimage.php?pos=-10643
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