sheet in the same direction as shown in fig2 and 6 of the drawing the process by which the studs are formed from the sheet preferably leaves the outer projecting ends of the studs sharpened to enhance the insertion of the studs into wood in operation apparatus 10 is preferably installed at an operating location adjacent a pallet support in the nature of table 62 the vertical height of the respective jaws is readily adjustable by operation of jack 32 so that the jaws project in cantilevered fashion over the surface 64 of the table as shown in fig1 of the drawing power means 22 of operating unit 24 is preferably of the double acting type and the operating unit is constructed so that an operator may hold control 30 in his hand or the unit may be disposed in close proximity to the operator to permit the latter to push button 66 with his foot to actuate the unit pushing of the button operates cylinder 22 to swing jaws 12 and 14 about pin 16 to bring the flat surfaces 46 of the pads toward one another release of the button operates unit 22 to swing the jaws in the opposite direction to move surfaces 46 away from one another operating unit 24 and its control 30 are standard commercially available items utilized for a variety of purposes and form no part of the instant invention per se accordingly the construction of unit 24 and control 30 need not be described in detail a unit which has been found suitable for operation in accordance with the principles of this invention is manufactured and sold by rexroth worldwide hydraulics bethlehem pa.