Slic3r is a free open source STL to G-code converter software for Windows, Linux, and macOS. It is a dedicated 3D printing software through which you can generate the G-code of a 3D model present in an STL file. Apart from STL, this software can also generate the G-code using 3D models carried by OBJ, 3MF, and AMF files. Conversational CNC Programming Software for MILLING stop the cad/cam overkill!! NOT every workpiece requires a complex and expensive CAD/CAM system nor a CAD/CAM programmer. CAD/CAM was originally created for complex aircraft programming and is a DESIGN tool first and foremost. It was NEVER designed to be a PRIMARY G code generating tool. If KipwareM – Conversational CNC Programming.
Complete g code list with m-codes for milling in the Fanuc, LinuxCNC, GRBL, and Haas dialects. We give a quick definition for all g code commands along with a link to tutorials and examples of how to use it. Click the g-code link (if any) to visit a tutorial from our popuplar online, free G-Code Training that shows examples and teaches how to program CNC machines using the g-code.
G Codes
Function | Notes | ||
| G00 | Move in a straight line at rapids speed. | XYZ of endpoint | |
| G01 | Motion | Move in a straight line at last speed commanded by a (F)eedrate | XYZ of endpoint |
| G02 | Clockwise circular arc at (F)eedrate | XYZ of endpoint IJK relative to center R for radius | |
| G03 | Motion | Counter-clockwise circular arc at (F)eedrate | XYZ of endpoint IJK relative to center R for radius |
| G04 | Dwell: Stop for a specified time. | P for milliseconds X for seconds | |
| G05 | Motion | FADAL Non-Modal Rapids | |
| G09 | Exact stop check | ||
| G10 | Compensation | Programmable parameter input | |
| G15 | Turn Polar Coordinates OFF, return to Cartesian Coordinates | ||
| G16 | Coordinate | Turn Polar Coordinates ON | |
| G17 | Select X-Y plane | ||
| G18 | Coordinate | Select X-Z plane | |
| G19 | Select Y-Z plane | ||
| G20 | Coordinate | Program coordinates are inches | |
| G21 | Program coordinates are mm | ||
| G27 | Motion | Reference point return check | |
| G28 | Return to home position | ||
| G29 | Motion | Return from the reference position | |
| G30 | Return to the 2nd, 3rd, and 4th reference point | ||
| G32 | Canned | Constant lead threading (like G01 synchronized with spindle) | |
| G40 | Tool cutter compensation off (radius comp.) | ||
| G41 | Compensation | Tool cutter compensation left (radius comp.) | |
| G42 | Tool cutter compensation right (radius comp.) | ||
| G43 | Compensation | Apply tool length compensation (plus) | |
| G44 | Apply tool length compensation (minus) | ||
| G49 | Compensation | Tool length compensation cancel | |
| G50 | Reset all scale factors to 1.0 | ||
| G51 | Compensation | Turn on scale factors | |
| G52 | Local workshift for all coordinate systems: add XYZ offsets | ||
| G53 | Machine coordinate system (cancel work offsets) | ||
| G54 | Work coordinate system (1st Workpiece) | ||
| G55 | Work coordinate system (2nd Workpiece) | ||
| G56 | Work coordinate system (3rd Workpiece) | ||
| G57 | Work coordinate system (4th Workpiece) | ||
| G58 | Work coordinate system (5th Workpiece) | ||
| G59 | Work coordinate system (6th Workpiece) | ||
| G61 | Other | Exact stop check mode | |
| G62 | Automatic corner override | ||
| G63 | Other | Tapping mode | |
| G64 | Best speed path | ||
| G65 | Other | Custom macro simple call | |
| G68 | Coordinate System Rotation | ||
| G69 | Coordinate | Cancel Coordinate System Rotation | |
| G73 | High speed drilling cycle (small retract) | ||
| G74 | Canned | Left hand tapping cycle | |
| G76 | Fine boring cyle | ||
| G80 | Canned | Cancel canned cycle | |
| G81 | Simple drilling cycle | ||
| G82 | Canned | Drilling cycle with dwell (counterboring) | |
| G83 | Peck drilling cycle (full retract) | ||
| G84 | Canned | Tapping cycle | |
| G85 | Boring canned cycle, no dwell, feed out | ||
| G86 | Canned | Boring canned cycle, spindle stop, rapid out | |
| G87 | Back boring canned cycle | ||
| G88 | Canned | Boring canned cycle, spindle stop, manual out | |
| G89 | Boring canned cycle, dwell, feed out | ||
| G90 | Absolute programming of XYZ (type B and C systems) | ||
| G90.1 | Absolute programming IJK (type B and C systems) | ||
| G91 | Incremental programming of XYZ (type B and C systems) | ||
| G91.1 | Incremental programming IJK (type B and C systems) | ||
| G92 | Offset coordinate system and save parameters | ||
| G92 (alternate) | Motion | Clamp of maximum spindle speed | S |
| G92.1 | Cancel offset and zero parameters | ||
| G92.2 | Cancel offset and retain parameters | ||
| G92.3 | Offset coordinate system with saved parameters | ||
| G94 | Motion | Units per minute feed mode. Units in inches or mm. | |
| G95 | Units per revolution feed mode. Units in inches or mm. | ||
| G96 | Motion | Constant surface speed | |
| G97 | Cancel constant surface speed | ||
| G98 | Canned | Return to initial Z plane after canned cycle | |
| G99 | Return to initial R plane after canned cycle |
Get a Powerful G-Code Simulator and Editor to Simplify G-Code Work
Function | Notes | |
| M00 | Program Stop (non-optional) | |
| M01 | M-Code | Optional Stop: Operator Selected to Enable |
| M02 | End of Program | |
| M03 | M-Code | Spindle ON (CW Rotation) |
| M04 | Spindle ON (CCW Rotation) | |
| M05 | M-Code | Spindle Stop |
| M06 | Tool Change | |
| M07 | M-Code | Mist Coolant ON |
| M08 | Flood Coolant ON | |
| M09 | M-Code | Coolant OFF |
| M17 | FADAL subroutine return | |
| M29 | M-Code | Rigid Tapping Mode on Fanuc Controls |
| M30 | End of Program, Rewind and Reset Modes | |
| M97 | M-Code | Haas-Style Subprogram Call |
| M98 | Subprogram Call | |
| M99 | M-Code | Return from Subprogram |
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More Resources
G Code Commands FAQ
How many G codes are there?
There are about 100 g code commands, give or take. There are many dialects of g-code, and some have proprietary g-codes.
What are G Codes in CNC Machines?
Cnc Milling G Code Programming Software
This page lists all the G code commands and tells what they do and also gives a link to tutorials and examples. G codes are single letter commands that tell the CNC machine what to do. They may command motion (i.e. tell the machine where to cut) or do things like turn the spindle on or off.
Is learning G-Code hard?
Learning g-code isn’t very hard. We have a complete free online g-code tutorial to teach you as well as a g-code simulator that makes learning easy.
Why are G Codes used?
Milling G Code Software Download
G Codes make CNC Machines programmable, which gives them the flexible to make almost any part.
What is the difference between G codes and M codes?
G-Codes are about Geometry while M-Codes are about Machine functions.
Do all CNC machines use G-code?
Not all CNC machine use G-Code. Some may have both g-code and other ways of programming, for example alternate languages such as Mazak’s Mazatrol or Conversational Programming. Others, may have an alternate language and no ability to execute g-code at all.