Feb 26, 2016 3-D Printed Sun Dial
A French Etsy shop called Mojoptix invented a 3-D printed sun dial that displays the time from 10:00 to 16:00 in 20 minute increments. All you need to do is place it in a sunny spot and adjust the sundial so it matches the time. If you already have a 3-D printer you can print your own sundial at Thingverse.