Abracadabra! Perform a magic coin piercing trick and amaze your family and friends. The eight solid pins pierce the solid coin eight times yet the coin comes back out of the container undamaged!See the demo video at http://youtu.be/96b9ElucVW0 .This project is sure to amaze your kids and help reassure your spouse that the 3D printer is a true household asset!Also see Thing 25344, http://www.thingiverse.com/thing:25344.Enjoy!11 June 2012: Add missing OpenSCAD source file 11 June 2012: Ran the bottom piece through Netfabb 14 June 2012: Determined cause of problems for Slic3r; uploaded new top & bottom .stl file and new .scad fileDownload the three .stl files, slice them, and print them. For maximum impact, print the coin and pins a contrasting color from that used for the top and bottom of the enclosure. Note that I sliced using 100% fill and 4 shells. The pins may print better with a raft.You can use the supplied OpenSCAD file to regenerate the container and pins to your specifications. For example, to a size which will work with your local currency.To perform the trick,