G41 & G42: Cutter Compensation Explained – Left vs Right Tool Offsets In contour milling or profiling, the center of the tool doesn’t always match the programmed path. That’s where G41 (left) and G42 (right) come in — they shift ...
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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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G94 vs G95: Feedrate Modes Explained – mm/min vs mm/rev in CNC
cnccodeG94 vs G95: Feedrate Modes Explained – mm/min vs mm/rev in CNC In CNC machining, feedrate (how fast the tool moves through material) is just as important as spindle speed or depth of cut. But what units is your machine ...
G98 & G99: Retract Modes in Drilling Cycles – Safe Z Moves Demystified
cnccodeG98 & G99: Retract Modes in Drilling Cycles – Safe Z Moves Demystified In canned drilling cycles like G81, the tool retract height after drilling is critical for both safety and efficiency. This is where G98 and G99 come into ...
G90 & G91: Absolute vs Incremental Positioning – Know the Difference Before You Crash
cnccodeG90 & G91: Absolute vs Incremental Positioning – Know the Difference Before You Crash When writing CNC programs, one of the most critical choices is how movement commands are interpreted: absolute or incremental. This is controlled by the G-codes: G-Code ...
G40, G41, G42: Cutter Radius Compensation – Accurate Profiling Made Easy
cnccodeG40, G41, G42: Cutter Radius Compensation – Accurate Profiling Made Easy In CNC machining, tool diameter (or radius) can affect how close your toolpath actually follows the intended profile. Cutter Radius Compensation (CRC) lets you program paths at the part’s ...
G2 & G3: Circular Interpolation Explained – Mastering Arcs in CNC
cnccodeG2 & G3: Circular Interpolation Explained – Mastering Arcs in CNC In CNC programming, G2 and G3 are used to generate circular or arc movements in the currently active plane (set by G17, G18, or G19). These commands are essential ...
G17, G18, G19: CNC Plane Selection Explained – Essential for Circular Moves
cnccodeG17, G18, G19: CNC Plane Selection Explained – Essential for Circular Moves In CNC programming, plane selection defines the active 2D plane for circular interpolation (G2/G3) and canned drilling cycles (like G81, G83). It tells the controller which axes form ...
G43, G44, G49: Tool Length Compensation in CNC – Prevent Z-Axis Errors
cnccodeG43, G44, G49: Tool Length Compensation in CNC – Prevent Z-Axis Errors In CNC milling, tool length compensation ensures that each tool operates at the correct height, accounting for differences in tool length. Without it, the machine would treat all ...
G40, G41, G42: Tool Radius Compensation in CNC – Complete Guide
cnccodeG40, G41, G42: Tool Radius Compensation in CNC – Complete Guide Tool radius compensation (G41/G42) allows the CNC controller to adjust the toolpath based on the cutter diameter. This is essential for accurate profile machining, avoiding manual adjustments to G-code ...
G90 vs G91: Absolute and Incremental Positioning in CNC Programming
cnccodeG90 vs G91: Absolute and Incremental Positioning in CNC Programming In CNC programming, G90 and G91 control how the machine interprets coordinate positions. They define whether each move is made relative to a fixed origin (G90) or relative to the ...