Parametric Boomerang in FreeCAD

prusaprinters

<p>This is pretty similar to some of my other boomerang designs, the only difference being that it was created in FreeCAD 0.19.</p> <p>This design is parametric. That means that you can download the FreeCAD source file and play with lengths, angles, thicknesses etc., and the model will update accordingly.</p> <p>Other tools such as Onshape or Fusion 360 might have a bigger user base and better usability, but if you want a free CAD tool (free as in freedom), I think FreeCAD is the way to go.</p> <p>This design is pretty robust, you can scale it down as needed. I have successfully printed boomerangs at 150 mm wingspan, so any one of the current FDM printers should work.</p> <h3>Print instructions</h3><p><strong>Infill:</strong> 25%</p> <p><strong>Notes:</strong></p> <p>Infill between 20% and 30% percent works well. Make sure to have plenty of top and bottom solid layers (I use 4 at .2 mm layer height), as well as sufficient wall thickness (4 or 5 perimeters should work fine).</p>