The baking tool that has a blade knife used to cut dough when making pastries is a pastry wheel. A pastry wheel is a tool with a blade knife that is used to cut dough when making pastries. It is also known as a pastry cutter or a dough cutter. Other baking tools that can be used to cut dough include kitchen shears, paring knives, and dough scrapers. A pastry blender is a handheld tool used to cut butter into flour for pastry dough, but it does not have a blade knife for cutting dough.