a clamping device for use with stock to be adhesed into a position where it will be routed to form a cove or other shaped routed joint at the interface of a vertical and a horizontal surface of corian ™ or equal rigid plastic sheets typically at the junction of a countertop and a backsplash respectively for kitchens and bathrooms . the device includes a main body having a pair of spaced suction cups at opposite ends of the main body portion . each of the suction cups is disposed on an extremity or terminal section of the central section of the main body at a similar but oppositely directed angle relative to the central section of the main body portion . the central section also includes a spring - loaded retaining notch disposed therethrough at about the midpoint of the central section for the stock to be routed .