Disclosed herein are a home appliance network system and a method for operating the same. The device guides the tool, mounted in the tool holder, along an intended plane, which is tangential to a peripheral surface of the rotatable grindstone, using a practically linear contact between the rotatable grindstone and the cutting tool. An optional hook lock is provided to help secure ends when forming substantially circular air ducts. If matches are found, then specific rules are implemented that have been previously stored and associated with the matched shell model or features on the received shell model. Alternatively, the application software may be or include a module associated with such application software. The meaning\u2014pipes are incorporated inside of the device, excluding external piping.