This guide on how to use FreeCAD covers the most capable free 3D modeling software available today — but it has a learning curve. This guide walks you through everything you need to know to get started, from downloading FreeCAD to exporting your first model. By the end, you will have built your first parametric 3D solid and you will understand the workflow that drives every other workbench in FreeCAD.

FreeCAD is open-source, free in every sense, and runs identically on Windows, macOS, and Linux. No license fee, no cloud account, no usage cap, no watermarks on your STL exports. Installing takes five minutes, and the first practical model takes about thirty.

Step 1: Download and Install FreeCAD

Start by visiting our download page and choosing the right version for your operating system — Windows (.exe installer), macOS (.dmg), or Linux (AppImage). The current stable version is 1.1.3. Installation is straightforward: run the installer and follow the prompts. On Windows 11 you may see a SmartScreen prompt on the first launch — see our Windows 11 install guide for details. macOS users may need to right-click the app and choose "Open" to bypass Gatekeeper on first run.

Step 2: Understanding the Interface

When you first open FreeCAD, you'll see a Start Center with options to create a new file or open an existing one. The interface has three main parts: the 3D viewport in the center, the Model tree on the left, and the Properties panel at the bottom left. The toolbar at the top changes depending on which workbench is active.

Workbenches are the heart of FreeCAD. Each workbench is a set of tools for a specific task — Part Design for solid modeling, Sketcher for 2D drawing, BIM for architecture, FEM for finite element analysis, Path for CNC machining, and so on. Switch workbenches from the dropdown in the toolbar. Beginners only need Part Design and Sketcher for now.

Step 3: Your First Sketch

The most common workflow in FreeCAD starts with a sketch. Switch to the Part Design workbench, create a new Body, then click "New Sketch." Select the XY plane and you'll enter the Sketcher. Draw a rectangle using the Rectangle tool, then add a dimension constraint (Sketch → Constrain horizontal distance) to set its width to 50mm and a vertical distance constraint of 30mm. Close the sketch when done.

The Sketcher is the foundation of parametric modeling. Every dimension you add becomes a named parameter you can change later, and the model rebuilds itself automatically. Spend ten extra minutes learning the constraint tools — coincident, horizontal, vertical, parallel, symmetric — and you will save hours later when designs need revisions.

Step 4: Extrude to 3D

With your sketch closed, click Part Design → Pad. Set the distance to 20mm and click OK. Congratulations — you've created your first 3D solid in FreeCAD. The model tree on the left now shows the Body containing the Sketch and the Pad operation. Click any operation in the tree to inspect or edit it.

Step 5: Modify with Parametric Editing

The real power of FreeCAD is parametric editing. Double-click the Sketch in the model tree to go back and change dimensions — click any constraint value and type a new number. FreeCAD immediately recalculates the Pad and updates the 3D model. This is how to use FreeCAD efficiently: build a history of operations you can go back and tweak at any time.

This single feature is what separates FreeCAD from polygon modelers like Blender. Change a base dimension, and every dependent feature — fillets, holes, mirror operations — updates automatically. Parametric history is also why FreeCAD files stay editable years after you saved them: every step is preserved.

Step 6: Export Your Model

To export for 3D printing, go to File → Export and choose STL format. For sharing with other CAD software, use STEP (.step) — it preserves the solid geometry accurately. FreeCAD supports over 50 file formats including IGES, OBJ, DXF, IFC, and DAE. See our 3D printing guide if your goal is sending the model to a printer.

Tips for Getting Better at FreeCAD

The FreeCAD wiki is excellent and covers every workbench in detail. The forum has an active community that answers beginner questions within hours. For video tutorials, search YouTube for "FreeCAD 1.0 tutorial" — there are hundreds of high-quality free videos.

The single most important tip: pick a real object you want to model — a phone holder, a bracket, a replacement knob — and model it. Tutorials teach syntax; building real things teaches design intent. Your first model will be ugly. Your fifth model will be respectable. Your tenth model will look like CAD.

FAQ — How to Use FreeCAD

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