Perhaps you’re a gardener and have seen these white little butterflies (Cabbage Moth / Cabbage Butterfly Plutella xylostella, Pieris rapae) that lay eggs on cabbage, then the hatched caterpillars devour your vegetables. It is referred to as both a moth and butterfly. It turns out these little delicate insects are highly territorial and wont go into a garden area where another is.
Old remedies were to spray tons of chemicals all over everything, spread egg shells in your garden, or place white paper butterfly decoys - but now we have 3D printing.
So I designed a 3D cabbage butterfly in AutoCAD
and used STLOUT or 3DPRINT command to generate a STL file for use by 3D printers. I could also have easily designed the 3D Butterfly and generated an STL 3D Print export using the free Autodesk 123D
solid modeling software. I then printed it on my MakerBot Replicator
and then affixed it with fishing line to some 1/8” copper wire.
It will now fend off any other cabbage butterflies in the garden.