Connecting Link
thingiverse
A simple print to do it should already be on the platform if you use maker ware but I sketched in US standard so you may want to scale it up. I also included the inventor file so you can alter the design if you want.
Download Model from thingiverse
With this file you will be able to print Connecting Link 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 Connecting Link.