5/2/15 - 21st Century Woodworking Day: CNC Piranha Demo at 11 AM. Find a store near you: http://www.rockler.com/retail/stores CNC machines have grown in popularity and have evolved to meet the budget and size restrictions of a smaller shop. The CNC Piranha is a good example of a compact, but powerful CNC machine. Stop by to see how one is used as well as how it’s set up. We’ll answer questions as the CNC Piranha works at routing complicated pieces.