Soldering tips wear away over time and must be replaced so that precision soldering can still be performed, such as is essential for connecting SMD modules. In addition, different applications demand the use of different sorts of soldering tips. This straight tips are particularly suitable fort for fine work such as soldering components on circuit boards. Flat tips or chisel tips offer a greater contact area for the solder. That means more heat is transferred and even thicker cables can be soldered. The shape of the soldering tips that is used also depends on the personal preferences of the user. For instance angled tips permit the soldering iron to be held in a different position than do straight tips.