Using your BC2 soldering tip is easy. First, make sure your soldering iron (TS100, TS101, or Pinecil) is turned off and cooled down. Then, replace the old tip with the BC2 tip. When you're ready to solder, turn on the iron and wait for it to heat up. Gently touch the tip to the area you want to solder and add a bit of solder. Be careful not to apply too much pressure. As for maintenance, after each use, turn off the iron and let it cool. Clean the tip with a damp sponge to remove any excess solder. Store the tip in a dry place to prevent rusting. Also, always follow the safety instructions of your soldering iron to avoid any accidents.