Brass Bolt puzzle

grabcad

Create this 3D challenge by utilizing M16 and M8 brass nuts & bolts plus a 4mm x 2mm round neodymium magnet and a 10mm x 4mm steel rod (from a 4mm nail). Credit goes to Heatniks for original nut and bolt designs. Inspiration comes from "homemade puzzles," available at http://homepage.ntlworld.com/bruce.viney/Bolt%20Puzzles%20Secrets.pdf. The mechanism functions by extracting the washer after hitting the base on a hard surface, allowing disassembly of other puzzle parts. It's a first attempt at using Autodesk Inventor; feedback is welcome.