Using the Makedo SCRU - DRIVER is a breeze. First, find the cardboard you want to connect. Then, punch a hole through the material where you want the connection. Take a SCRU and insert it into the socket on the end of the SCRU - DRIVER. Now, turn the SCRU - DRIVER a few times following the 'righty tighty' rule, and your cardboard pieces will be joined securely. As for maintenance, just keep it clean and dry. If it gets dirty, you can use a dry cloth to wipe it. Avoid using it with very thick or hard materials other than cardboard, as it may damage the tool.