Saw a papercraft version of this - http://howaboutorange.blogspot.com/2012/02/diy-pixel-heart-necklace.html - and thought that was too much work! Especially since it looked like lasercut acrylic or 3D printed ABS to me.Use the OpenSCAD file if you want to modify it. There's a variable to make the heart 3D or 2D so you can export a STL or a DXF.It's set up to render a 1.5" wide pendant. I've also include a STL file for 3D printing and a DXF file for lasering.