Jewelry & accessories

Tiny Book Earring — a wearable book that really opens, print-in-place hinge, no supports

A book small enough to wear that actually opens. One print-in-place piece: two covers on a seven-knuckle piano hinge with a captive pin, a hollow page cavity inside, and ONCE UPON engraved on the inner cover so the message only shows when you open it. 22 x 17.6 x 4.2 mm closed, 1.55 g, about 25 minutes, no supports and no hardware beyond an ear wire. Comes off the plate open flat; fold it once and it clicks shut on a printed detent bead, and a thumbnail in the fore-edge scallop pops it open again. Fully parametric OpenSCAD source — size, cover thickness, hinge clearance, detent grip and the engraved message are all variables.