G90 vs G91 Explained: Absolute and Incremental Positioning in CNC Programming In CNC programming, G90 and G91 determine how the machine interprets all motion commands like G0, G1, G2, and G3. Mastering the difference is essential for creating safe, accurate, ...
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Category: G-Code & M-Code Reference
Explore the complete list of G-codes and M-codes used in CNC machining. Understand commands, syntax, and machine responses with real-world examples and explanations.
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G43, G44, and G49 Explained: Tool Length Compensation in CNC Programming
cnccodeG43, G44, and G49 Explained: Tool Length Compensation in CNC Programming In professional CNC programming, tool length compensation (TLC) is a critical feature that ensures each tool cuts to the correct Z-depth, regardless of its physical length. G43, G44, and ...
G2 & G3 Explained: Circular Interpolation with R and IJK in CNC Programming
cnccodeG2 & G3 Explained: Circular Interpolation with R and IJK in CNC Programming Circular interpolation allows the CNC machine to create arc movements instead of straight lines. This is essential for profiles like circles, fillets, or complex contours. These codes ...
G-Code Canned Cycles Explained: G81–G89 Drilling, Boring, and Tapping
cnccodeG-Code Canned Cycles Explained: G81–G89 Drilling, Boring, and Tapping Canned cycles are pre-programmed routines that simplify repetitive operations like drilling, tapping, boring, and countersinking. They reduce code length, increase readability, and improve machine efficiency. This guide covers all major canned ...
Understanding Cutter Compensation: G40, G41, G42 Explained with Examples
cnccodeUnderstanding Cutter Compensation: G40, G41, G42 Explained with Examples When programming CNC toolpaths, tool diameter plays a crucial role. Without compensation, your part dimensions will be off by the cutter radius. This is where cutter compensation — G40, G41, and ...
G-Code Coordinate Systems Explained: G54–G59, G53, G92, and Beyond
cnccodeG-Code Coordinate Systems Explained: G54–G59, G53, G92, and Beyond CNC machines use multiple coordinate systems to locate and cut parts accurately. Without understanding them, you risk cutting in the wrong place — or crashing your machine. Let’s break down: 📐 ...
G-code Modal vs Non-Modal Commands: What They Are and Why They Matter
cnccodeG-code Modal vs Non-Modal Commands: What They Are and Why They Matter In CNC programming, understanding the difference between modal and non-modal commands is key to writing efficient and error-free code. Let’s break down what these terms mean, how they ...
How to Use G28 and G53 Safely in CNC: Return to Home Without Crashing
cnccodeHow to Use G28 and G53 Safely in CNC: Return to Home Without Crashing Returning the tool to a safe position (home or machine zero) is one of the most critical steps in CNC programming — especially when running automated ...
Understanding and Using G41/G42 Cutter Compensation in CNC Machining
cnccodeUnderstanding and Using G41/G42 Cutter Compensation in CNC Machining Cutter compensation allows CNC machines to account for tool radius when generating toolpaths. Without it, your part dimensions may be incorrect — especially on internal and external contours. This guide explains ...
How to Properly Set Tool Z Zero in CNC: Tool Setter, Touch Off, and Manual Methods
cnccodeHow to Properly Set Tool Z Zero in CNC: Tool Setter, Touch Off, and Manual Methods Correctly setting the Z zero in CNC machining is critical for part accuracy and tool safety. A small mistake in Z height can break ...