Cubic Fractal rounded

Instead of the cubes I now use spheres and create a hull to connect to the last sphere, this gives some interesting results. I haven't found the optimal value for the size_decrement variable yet, when it is to high parts will overlap and when it is very low the structure looks very skinny. I used 0.41 for a recursion of 3, 0.33 for recursion 4 and 0.3 for 5. Generating the stls for high recursions is really slow.

The scad file works with OpenSCAD, seems like the hull function is not supported in the thingiverse preview.