coin clip
thingiverse
A personalized adaptation of http://www.thingiverse.com/thing:123529 was created using the Customizer! (http://www.thingiverse.com/apps/customizer/run?thing_id=123529) For printing, use these specific settings: clip_bump = 4, clip_w = 8, clip_l = 30, pen_thick = 2, pen_l = 7.5, pen_d = 29.64, and clip_thick = 3.
Download Model from thingiverse
With this file you will be able to print coin clip 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 coin clip.