Lathe Speed Guide
RPM = Ideal SFM x 12 / (pi x Diameter)
Target 6,000-9,000 SFM for most operations
General Speed Guidelines
- Large diameter (>8"): Start slow (500-800 RPM), increase gradually
- Medium diameter (4-8"): 800-1800 RPM for roughing
- Small diameter (<4"): Up to 3000+ RPM for finishing
- Bowl turning: Use lower speeds than spindle turning at same diameter