Now available in Hard/Flexible and Frosted Detail plastics. I suggest Shapeways purchases SLS metal printers to be able to produce Interlocking mechanisms like this one in a One-Step simple process with Precious Metals (semi, etc.). Use it as a bracelet, a holder, relaxing sessions, royalty play, you name it... Have fun!
Note: this product is no longer ''First to try''. After verifying tolerances through iteration I've updated the design with optimal dimensions.