The Reverse Bevel Open V-Groove involves two symmetrical cuts: one in the fallout and a corresponding cut in the matboard, both forming a mirrored arrangement a specified distance apart.
The matboard core is not visible but the lower layer matboard is visible from the front.
Select Reverse Drop or Reverse Drop-Front of Mat from the Current Bevel Type Dropdown Control in the Configurations to edit the interior cut configuration.
Select Reverse Bevel or Reverse Bevel-Front of Mat from the Current Bevel Type Dropdown Control in the Configurations to edit the exterior cut configuration.