Basic Guide to CNC Machining in FreeCAD

Cnc Machining In Freecad

Are you looking to delve into the world of CNC machining using FreeCAD but feeling overwhelmed with where to start? Fear not! This step-by-step guide will walk you through the process from beginning to end, ensuring you have a solid understanding of how to utilize FreeCAD for CNC machining projects.

Understanding FreeCAD

To start, let’s familiarize ourselves with FreeCAD. It is a powerful open-source parametric 3D modeling software that allows users to design real-life objects of any size. It provides a wide range of tools and features necessary for creating intricate designs for CNC machining.

Installation and Setup

The initial step is to download and install FreeCAD on your computer. Once the software is installed, familiarize yourself with the interface and tools available. Setting up the software according to your preferences will streamline your workflow and make the design process more efficient.

Designing Your CNC Project

Now comes the exciting part – designing your CNC project using FreeCAD. Start by creating a new project and sketching out your design using the various drawing tools. Ensure your measurements are accurate and that the design aligns with your CNC machining requirements.

Adding Details and Precision

Once the basic design is in place, it’s time to add details and ensure precision in your model. FreeCAD offers features such as constraints and dimensions that aid in refining your design and making necessary adjustments for CNC machining.

Exporting for CNC Machining

After finalizing your design, it’s crucial to export the file in a format compatible with your CNC machine. FreeCAD supports various file formats, including STL and STEP, which are commonly used in CNC machining. Make sure to double-check the exported file to avoid any discrepancies during the machining process.

Setting Up Toolpaths

Before proceeding with the CNC machining process, it’s essential to set up toolpaths within FreeCAD. Toolpaths define the cutting operations that the CNC machine will perform on your design. By configuring toolpaths accurately, you can ensure precise and efficient machining of your model.

Simulating the Machining Process

To verify the design and toolpaths before actual machining, FreeCAD allows users to simulate the machining process. This step is crucial in identifying any potential errors or collisions that may occur during the machining process, ultimately saving time and resources.

Executing the CNC Machining

With the design finalized, toolpaths set up, and simulation completed, you are now ready to execute the CNC machining process. Transfer the design file to your CNC machine, securely fasten the material, and initiate the machining process. Sit back and witness your design come to life with precision and accuracy.


In conclusion, FreeCAD serves as a valuable tool for individuals venturing into CNC machining projects. By following this step-by-step guide, you can harness the power of FreeCAD to create intricate designs and bring your ideas to fruition through CNC machining. Embrace the creative process, experiment with different designs, and elevate your CNC machining skills with FreeCAD as your trusted companion.

Amar Patel
About Amar Patel 160 Articles
Hi, I am Amar Patel from India. Founder, Author and Administrator of I am a Simple Average Man who Loves life and Love living life. Professionally I am a Mechanical Engineer with Solid command over CAD software like FreeCAD, SolidWorks, Autodesk Inventor and AutoCAD Mechanical. I’m here to share my knowledge to help you accomplish your design and engineering tasks quicker and easier. I am Passionate about learning new things especially about Open-Source Software. I love teaching therefore I started my YouTube Channel on FreeCAD and I believe FreeCAD have lots of potential than traditional 3D software. contact me - [email protected]