Hello everyone! 👋
I am a Mechanical Engineer based in Serbia, passionate about bridging the gap between hardware (CNC machines) and software.
Often, engineers are stuck using heavy, expensive, and bloated industrial software just to check a simple G-code file or visualize a toolpath. I wanted something faster, lighter, and modern. So, I decided to build it myself using Python.
I present to you PyNCViewer.
What is PyNCViewer?
It is a modern, open-source G-Code Viewer and Simulator for CNC machines. I designed it for engineers, machinists, and hobbyists who need a fast tool to visualize, analyze, and edit G-Code without waiting for a heavy CAD/CAM suite to load.
Key Features 🛠️
Here is what it can do right now:
Real-time Visualization: Full 3D OpenGL rendering with Pan/Zoom/Rotate capabilities.
Animation Mode: You can "play" the machining process with an adjustable speed slider to see exactly how the tool moves.
Smart Scan: It automatically detects potential crashes (Rapid G0 into material), missing feed rates, and syntax errors.
Tool Library: Support for multiple tools (T1, T2...) with custom diameters.
DXF Export: A unique feature that allows you to reverse engineer G-Code back into DXF drawings.
Advanced Editor: Includes syntax highlighting, renumbering lines, and removing line numbers.
Transformations: Mirror, Scale, Shift, and Axis Swap your G-code instantly.
DRO Panel: Digital Readout of coordinates during simulation.
The Tech Stack 💻
For those interested in the code, I built this using:
Python 3
CustomTkinter (for the modern dark-mode UI)
NumPy (for coordinate calculations)
OpenGL (for rendering)
Why Open Source?
I believe engineering tools should be accessible. Whether you are a student, a hobbyist with a 3D printer, or a professional machinist, you shouldn't have to pay a subscription just to view a G-code file.
Try it out! 🚀
The project is fully open-source on GitHub. I would love to hear your feedback, bug reports, or feature requests!
https://github.com/mycodes21/PyNC_Viewer
(Feel free to Star the repo if you find it useful! ⭐)
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