Abstract: A clamping device for attachment to a work support or table and adapted to hold a ski in either a horizontal position or on its edge in a vertical position to permit waxing, sharpening, or other finishing or repair operations. The upper face of the clamping device has both an elongated shallow tray for horizontal ski support, and a deeper and narrower U-shaped tray for vertical ski support, and a screw means is employed acting on either one or two separate movable abutments to clamp the ski within one or the other tray.