The channel letters we manufacture are created of aluminum and Lower by a CNC router. The router produces the back again of your channel which is The idea with the letter shape. Returns, the sides with the letter, are then formed by bending a 3- to 6-inch-vast strip of aluminum https://illuminated-channel-lette87642.blogofchange.com/36050052/the-2-minute-rule-for-face-lit-channel-lettersl