General Description The hidden hinge jig is an essential tool for precise drilling of cabinet hinges and mounting plates. It is designed to provide excellent visibility and stability during use, allowing you to create perfectly round and accurate holes. Made from impact-resistant polycarbonate, it is durable and suitable for various types of drills, including pillar drills and handheld drills. Technical Specifications Hole diameter: 35 mm Material: Impact-resistant polycarbonate Drill type: Forstner drill Bit distance adjustment: 0-30 mm Compatibility and Accessories Compatible with: pillar drill, pistol drill, bench drill, vertical drill, handheld electric drill, stand-mounted motor drill, movable belt type magnetic drill Included in the package: 1 hinge drilling jig, 1 set of Forstner drill bits, 1 hex key Installation Determine the hinge cup position with the short plate facing up. Fasten the screw to the edge of the wood board and drill the hole for the hinge cup. Draw the center line on the other board with the shorter board facing down. Align the center line with the inverted triangle and drill the hole for the hinge seat. Install the hinges. For optimal use, ensure the drill positioner is securely fastened before starting. Regular lubrication of the tool with grease is recommended to improve performance. Keep hands and body away from sharp edges and moving parts during operation.