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In a process similar to 3D printing, the material is deposited in layers. Each layer is exposed to ultraviolet light from a source attached to the pen, hardening the gel so further layers can be added, eventually building a three-dimensional framework.
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Saint of the Day

March 27 Saint of the Day

St. Rupert
March 27: Bishop and missionary, also listed as Robert of Hrodbert. A ... Read More