Twist Ring
thingiverse
An intriguing form accommodates up to four AA batteries, along with LEDs and a miniature microcontroller inside it. Attach the printed versions using screws as per instructions.
Download Model from thingiverse
With this file you will be able to print Twist Ring with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Twist Ring.