It's the hero your underwear deserves. It's a guardian. A watchful protector.Saw a picture of this, wanted one, made one.Print, add spring, protect your drying clothes from wind and other hazards.Might have the opposite effect on cats.The back of the wings are only 1.2mm thick to get a translucent effect. You can easily change this in the SCAD file by changing "height=layer_height*4" on the "wing_back" layer import. You can also change "layer_height=?" to fit your setup.SVG file is supplied if you want larger/smaller or different designed wings. I use this method to export it to dxf: http://repraprip.blogspot.no/2011/05/inkscape-to-openscad-dxf-tutorial.htmlThe base design is the same as alanretentives, and it works fine. It might need a small tap to keep the parts aligned though.