Heart Gears

thingiverse

For a unique Valentine's Day gift, try this handheld heart gear that can be twisted like a worry ball. Inspired by Greg Frost's Broken Heart, it features a simplified design with fewer gears and easier attachment. Print all unique gears using OpenSCAD for customization, then assemble them on a central block and adjust screws until they spin freely. If you lack a 3D printer, purchase from CarryTheWhat on Etsy. The complete stl file is available for assembly reference.