User:Slashme/Wikisphere

Creating the shell

 * Add mesh - UV sphere
 * Set segments to 64
 * Set rings to 32
 * Duplicate and scale by 0.95
 * Turn sphere into shell:
 * Select outer sphere
 * add modifier - Boolean - difference - choose smaller sphere as second object.
 * Apply modifier
 * Delete smaller sphere

Make half-shell

 * Add plane, scale 2×
 * Select sphere
 * Add modifier - Boolean - intersect - choose plane as second object
 * Apply modifier
 * Delete plane

Make trivial puzzle-piece with 90° cut faces

 * Add cone
 * Move cone origin to sphere centre
 * Add Boolean modifier to cone: intersect - choose sphere shell as second object
 * Apply modifier
 * Move resulting object away from sphere
 * Note: changing vertices of cone would yield any shape of puzzle piece.
 * Note: Will have to shade edges of puzzle pieces flat, rest as smooth.