Kiwi programmer and farmer John Hart of Lifeboat Farm has been experimenting with using his RepRap to produce mechanical pest control devices so he can leave off the chemical pesticides. Shown above, fused-filament butterfly decoys, spotted with a marker and mounted on stalks of plastic filament in the garden:
The stalks are quite flexible so the butterflies bob about in the wind. They look pretty realistic to me, but more importantly I’ve seen white butterflies hovering around, then leaving without touching down, all this week. Time will tell if any have the courage to sneak in to lay eggs.