Soldering involves using an alloy of 60% tin and 40% lead. A classic soldering iron is 30W and has a permanent heating element that remains hot during use and breaks. It is suitable for repetitive soldering tasks. To solder a component to a copper plate, heat the tip and pin, then apply tin once hot enough for it to melt and solidify within seconds. Soldering stations provide power but also sponges or boards to place hot soldering irons. Different tips allow soldering electronics or desoldering with attachments that create suction using a bulb.