Using these Hakko wire strippers is a breeze. First, select the appropriate notch on the stripper for the 20 - 30 AWG wire you're working with. Then, place the wire in the notch and gently squeeze the handles. The precision - ground notches will cut through the insulation cleanly. For best results, try to keep the wire straight while stripping. As for maintenance, keep the strippers clean after each use. You can wipe them with a dry cloth. If they seem dull over time, it might be time to replace them. Remember, these are high - quality tools, but don't use them for anything other than stripping 20 - 30 AWG wires to avoid damage. Also, store them in a dry place to prevent rusting.