Here's my latest design the "Dirty Dozen" made from laser cut 5mm stainless steel. Available for sale on my puzzle site. Click the link below. http://mechanical-puzzles.com/product/dirty-dozen-interlocking-puzzle/
Three of around half dozen symmetric shape puzzles featured. Puzzles from Nick Baxter, Tomas Linden/Vesa Timonen and Emrehan Halici. Please follow the link below. http://mechanical-puzzles.com/symmetric-shape-puzzles/