Using the BORA® NGX Twin Rail Rip Guide is a breeze. First, use the free clamping mechanism to snap your circular saw (it fits both left and right - handed ones) onto the guide. Then, place the guide on your sheet goods. You're all set to make either a single cut or multiple cuts with great precision. Remember, since the product is related to wood dust (Prop 65), it's a good idea to wear a dust mask during use. For maintenance, after each use, wipe down the aluminum twin rails with a dry cloth to keep them clean. Store the guide in a dry place to prevent rusting. This way, your NGX Twin Rail Rip Guide will serve you well for a long time.