In this Machine Talk episode, Will Mund and I break down the next layer of CNC machines by focusing on motion. After covering machine foundations in the last episode, we get into what actually makes a CNC move, including box ways vs linear guideways, what “hand-scraped” really means on box ways, and how all of it affects rigidity, speed, and long-term wear. We also dive into ball screws, preload, backlash, and what to look for when you’re judging machine accuracy and performance.