The 90° Cartridge cuts a 90° Right Angle into the matboard. The matboard core is hidden from view since there is no Bevel when cutting at a 90° Right Angle. The Bevel Type refers to the angle at which the blade cuts the surface of the matboard when it deviates from the 90° right angle cut. The Bevel Type for the 90° openings is the form of opening cut and determines the initial blade plunge position.
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