Here's How Sign Companies Cut Letters For Their Signs Watch how our CNC router machine precisely cuts an acrylic letter for a custom business sign. This video showcases the sign manufacturing process as a CNC router cuts the letter “H” from a 1/4-inch acrylic sheet. CNC technology allows sign manufacturers to produce clean, accurate sign letters used for storefront signs, dimensional lettering, and custom commercial signage. Businesses rely on precision fabrication to create professional signage