Parametric Boomerang in Blender and Geometry Nodes

thingiverse

--- *Edit:* I included a new version geometry-nodes-3 which has slightly thicker leading and trailing edges. I also fixed some asymmetry in the airfoils and changed the elbow section a little. --- There are multiple boomerangs made in Blender among my designs, but so far it wasn't possible (for me, at least) to make one that (a) can be manipulated via Bezier curves and (b) does not require special plugins such as [Sverchok](https://github.com/nortikin/sverchok). I have made such parametric boomerangs with Sverchok in the past (see the remix section for references), but wasn't able to do so with stock Blender and geometry nodes. In recent Blender versions, new geometry nodes such as [Extrude Mesh](https://docs.blender.org/manual/en/dev/modeling/geometry_nodes/mesh/extrude_mesh.html) have been implemented. With these, it is now possible to make a working boomerang that can be manipulated after the fact by dragging around the control points of the Bezier curves. The airfoil is kind of crude, since geometry nodes don't seem to be able to do bevels right now, but it works just fine. Printed with lots of perimeters (I use 5), 4 top and bottom layers, and 25-30% infill at .2 layer height. Throw low and with a bit of layover. Should do a nice and easy 30 meter-ish circle. Works best in light to moderate winds.