Education · Find something to print

Education projects. Projects makers host here: download the files, change the sizes, or order a print.

• Geneva drive A driver turns steadily; the four-slot wheel steps a quarter turn each time round and waits in between. Press play.
• Cam and follower An eccentric cam lifts a flat follower 10 mm and lets it fall, every turn. Press play.
• Two-stage gearbox Two 12:36 gear pairs, 9 to 1. Press play: three turns of the input make a third of a turn out.
• Box with hinged lid A box, a lid and a hinge pin. Press play and the lid opens to 110° and shuts.
• Single-cylinder engine kit The same engine in pieces, laid out on the floor with the block held still. Put it together yourself with Joint.
• Single-cylinder engine A working engine: block, crankshaft, connecting rod with bolts and nuts, piston and wrist pin, all joined. Press play to turn the crank; explode it or read its parts list.