Unique Rail System incorporates equally spaced, tapered cone-shaped pin    design along the entire rail to minimize contact with material and to      eliminate tick marks. The cone-shaped pin design virtually defuses the     laser beam to eliminate flashbacks. Uniform spacing of pins allows flexibility of rotating Acrylic Risers, Acrylic V-Blocks and custom fixtures to    maximize engraving speed and increase production 3-400%! Reduces setup costand eliminates costly manufacturing errors.