Expandable Slidable structure, the Ultimate Deployable jewel/accessory/toy from BDan Concepts :) Easy to print, just get the right supports (water soluble recommended) and the right parameters, or just order from https://www.shapeways.com/product/RVWL949TN/expandable-bracelet-xs in the material and color of your choice!
And you can download the original SketchUp model on the https://3dwarehouse.sketchup.com/user.html?id=1554342033592517832346042
to Mass-Customize it ;)
Cheers!
expandable_bracelet_XS.stl | 8.5MB |