Before You Press Cycle Start! CNC Setup & First Run Checks | Beginner Lesson 10

What should you check before running a CNC program for the first time? Learn how program review, setup verification, simulation, and first-part inspection work together. In Lesson 10 of CNC Milling for Beginners, we cover: • Confirming the correct program and revision • Checking workholding, tools, and clearances • Verifying work offsets and tool length information • Reviewing active modes and approach movements • Understanding the limits of graphics simulation • Using single block and understanding its limitations • Rapid override versus feed override • Why dry run can still move the machine • Feed hold versus emergency stop • Inspecting the first part before continuing production Follow clear examples to understand why a completed cycle or a screen without alarms does not prove that the setup or part is correct. This lesson introduces the process. Follow your machine’s manual, machine-specific training, and approved shop procedures. Subscribe to Know-How Compass for practical skills and clear lessons. ▶ Next: Lesson 11 — First-Part Inspection: Comparing a Machined Part with Its Drawing. #CNCSetup #CNCForBeginners #CNCMachining #KnowHowCompass #CNCProgramming #CNCMilling #Machinist #FirstPartInspection