123 chain
thingiverse
A tailor-made rendition of http://www.thingiverse.com/thing:28405 was created using the Customizer at http://www.thingiverse.com/apps/customizer/run?thing_id=28405. For personalization, set the radius (r0) to 20mm, choose a straight type, set pitch to 12, opt for 40 links, and adjust thickness (t) to 2mm, diameter (d) to 12mm, and link length (l) to 8mm.
Download Model from thingiverse
With this file you will be able to print 123 chain 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 123 chain.