Using this Klein cable cutter is a breeze. First, place the cable you want to cut in the cutting area. Then, give the handle a couple of turns, and the cutter will slice through 3/8 - Inch flexible conduit and #10, 12, and 14 armored cables with up to 4 wires. When adjusting the depth of cut, make sure you understand the difference between standard MC and reduced diameter MC. As for maintenance, keep the cutter clean after each use. Wipe off any debris or dust. If the blade gets dull, you can easily replace it with a Klein Tools replacement blade Cat. No. 53726. Also, store the extra blades in the handle as it's a convenient storage spot. Be careful not to use it on cables beyond its cutting capacity to avoid damaging the cutter.