Using the Jet JT9 - 70411 Parallel Clamp Framing Kit is a breeze. First, if you need to clamp a workpiece, adjust the moveable rail stand/end stop to preset the clamping capacity. Then, use the Acme threaded handle to turn and apply pressure until you reach the desired tightness. The Slide - Guide trigger makes it easy to make any precise adjustments. If you want to use it as a spreader, simply reverse the reversible clamping movable jaw. When using the Cross Doc™ framing blocks, place them at the four points of the rectangular frame for safe and secure gluing. As for maintenance, keep the non - marring composite resin jaw faces clean to avoid damage to your workpieces. Wipe the handles and other parts regularly to ensure smooth operation. Also, store the kit in a dry place to prevent rusting. Always follow the safety rules when using the clamps to avoid any accidents.