This is the the world's most complicated 1 minute timer. Note that the frame has since been updated since the images and video were created. Also note that you might have to employ a drill or exacto knife to ensure that everything fits as it should. Axis are 3mm steel rods cut to the appropriate lengths.
This is printed in PLA. Gears are printed at a layer thickness of .15 mm, the rest was printed at a thinkness of .2 mm.
The final project in motion