### How To Determine Cutting Speeds For Machining Tools Dummies

10 inches 504 rpm 5 inches 1008 rpm 2 inches 2521 rpm at 1 inch the spindle would be humming along at 5042 rpm a dangerous speed for a workpiece that large do the math if you dont believe me 382 x 13201 5042 this illustrates an important point the smaller a turned diameter or the diameter of a rotary tool the