1. Open FreeCAD

Launch FreeCAD from your system. Ensure you have an up to date version.
2. Open the Addon Manager

Go to Tools > Addon Manager and search for “Gridfinity”.
3. Install the Gridfinity Workbench

In the Addon Manager, select Gridfinity Workbench and click “Install.”
4. Install the FreeCAD‑WakaTime Addon

Also install the FreeCAD-WakaTime Addon from the Addon Manager. While you're at it, star the repo.
5. Restart FreeCAD & Enable WakaTime

After restarting, enable FreeCAD-WakaTime from the FreeCAD-WakaTime Workbench. Check the console for a load confirmation.
6. Create a New Parametric Part

Create a new Parametric Part.
7. Create a New Blank Bin

Select the Gridfinity Workbench and create a Blank Bin
8. Set Bin Dimensions

Define the bin size according to your needs (e.g., 1×3 units).
9. Sketch on the Top Face


Select the top face, create a sketch, draw your shape with the Polyline tool, and add dimension constraints (0.5~1mm clearance is recommended).
10. Add External Geometry & Symmetry

Use External Geometry to reference horizontal and vertical axes. Add horizontal/vertical constraints, it should be unable to move (all green).
11. Close Sketch & Create Pocket

Close the sketch and use the “Pocket” tool with the required depth for your piece.
12. Apply a 15° Draft (optional)

Sketch a 15° triangle on an external sketch and use a “Pocket” with “Up to face” to ease removal (optional).
13. Add a Chamfer (optional)

Finally, apply a chamfer on the insertion edge for better finish and usability (optional).
Export your design and submit it to get your filament grant!
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