Using the Weha Edge Chisel Machine is easy. First, adjust the tool according to the thickness of your stone slab. Make sure the air pressure is set to 90 PSI. Place the slab in position and start the machine. It will automatically break the slab edge to create a chiseled effect. When using the machine, always wear appropriate safety gear. Keep the work area clean to avoid any interference with the machine's operation. For maintenance, regularly check the air connections for any leaks. If the machine is not going to be used for a long time, store it in a dry place. Also, remember that the machine comes with a 6 - month warranty, so if you encounter any issues, contact the support team.