G16 Polar Coordinate Programming in VMC | Practical Bolt Circle Hole Example for Beginners

In this video, we will learn G16 Polar Coordinate Programming in VMC with a complete practical CNC programming example. G16 is very useful when we need to program multiple holes or machining positions equally spaced on a Pitch Circle Diameter (PCD). Instead of calculating every X and Y coordinate manually, polar coordinate programming can make the program much easier and faster. 🔧 Topics Covered in This Video What is G16 Polar Coordinate Programming? How G16 works in VMC/CNC milling Polar coordinate concept explained Radius and angle programming PCD hole programming using G16 Practical bolt circle drilling example How to calculate PCD radius Angular position calculation 12 equally spaced holes example How to combine G16 with drilling canned cycles G81 / G83 with polar coordinate programming How to cancel polar coordinate mode Common mistakes while using G16 Practical VMC program explanation CNC programming tips for beginners 📌 Practical Example Suppose we have: PCD = 150 mm Number of Holes = 12 Radius = PCD ÷ 2 Radius = 150 ÷ 2 = 75 mm Angular spacing: 360° ÷ 12 = 30° So every hole will be positioned at an angular difference of 30° on a radius of 75 mm. This is where G16 Polar Coordinate Programming becomes extremely useful. Example Concept G16 → Polar Coordinate Mode ON Program positions using Radius + Angle Complete all hole locations Cancel polar coordinate mode as required by the controller. Note: Exact G16 syntax and cancellation method can vary depending on the CNC controller, so always verify your machine/controller manual before running the program. 🎓 Join Live CNC / VMC Programming Classes Want to learn CNC & VMC Programming from Basic to Advanced Level with practical industrial examples? Join: Sigma Youth Engineers Academy 📞 Call: +91 8860189216 📲 WhatsApp: +91 9896510102 📧 Email: cnccadcam.sye@gmail.com 🌐 Website: www.sigmayouthengineers.com Training Topics CNC Programming • VMC Programming • G-Code & M-Code • Polar Coordinate Programming • PCD Hole Programming • Drilling Canned Cycles • CNC Turning • CNC Milling • AutoCAD • Mastercam • Autodesk PowerMill • CNC CAD/CAM Suitable for: ITI Students | Diploma Engineers | B.Tech Mechanical Engineers | CNC Operators | VMC Operators | CNC Programmers | Production Engineers Sigma Youth Engineers Academy Learn • Build • Innovate If this video is helpful, please LIKE 👍 | SHARE ↗️ | SUBSCRIBE 🔔 and comment with your CNC/VMC programming questions.