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3D LED Signage

A 3 d led  letter is a three-dimensional graphic sign element. Its channel is fabricated from sheet metal, most often aluminium since it will not rust. A flat sheet of aluminium is typically cut on a table by a computer-controlled router. This creates the back of the channel and is the basis for the letter shape. The sides of the channel letter, called the returns, are then formed by bending a 3 to 6-inch-wide (150 mm) strip of aluminium sheet around the aluminium back. This return can be welded at the seam or flanged and riveted to the back to create a solid can in the shape of the letter. The letter can is painted and fitted with  light-emitting diode (LED) modules.  A trim cap border is applied to its edges which gives the letter face a finished appearance and creates a fastening surface to attach it to the letter can. When illuminated at night, channel letters draw the eye of passers-by.