Triangle
thingiverse
A different creation I fashioned using Tinkercad can be found at http://tinkercad.com; for printing instructions, simply follow the provided guidelines.
Download Model from thingiverse
With this file you will be able to print Triangle 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 Triangle.