Dimensional letters are cut from a computer controlled router, making it possible to create custom signage styles with exact measurements. … Once cut, the lettering base is then bent to give the letter the three-dimensional look that defines this type of signage. Whether used for interior or exterior purposes, you’ll appreciate our letters’ durability and guaranteed finishes that won’t chip, crack, fade or discolor. From cut and cast metals to plastic and acrylic, you’ll find exactly the right letters that fit your style, budget and purpose.