Using the Makita D - 46246 planer blade set is easy. First, make sure your planer is turned off and unplugged. Then, install the blades according to the planer's instructions. You can use these blades on most 3 - 1/4 inch planers from Makita and some other brands. Since the blades are double - edged, when one edge gets dull, you can reverse the blade to use the other sharp edge. When using the planer, feed the material at a steady pace for smooth cuts. As for maintenance, after each use, clean the blades with a soft brush to remove sawdust and debris. Store the blades in a dry place to prevent rusting. If you notice the blades are not cutting as well as before, it might be time to replace them or have them sharpened.