MAQ wanted to make machining easier for you. An alternative to traditional vibration damped machining tools. So, we turned a complex technology into a simple yet effective, plug-and-play solution. MAQ’s self-tuning mass damper (STMD™) is used for CNC milling, turning, and holemaking operations. A vibration damped machine tool or tool holder that heavily reduces the unpredictable and frustrating byproducts of machining: vibrations (regenerative tool chatter)