If you print it out please remember to share your make. It's always good to how other people have used the models :) Thanks!
This was designed for use on an IKEA Lack table allowing you to cut a various sizes of holes in the table and inset the grommet. Just choose your size for what you need and get printing! I used the grommet in my 3D printer enclosure but could be used anywhere. Check that out here: http://www.thingiverse.com/thing:2212749
A round version can also be found here:
Print on its top side. No supports required and the hinge will just print out as is. It would be good to hear feedback as the tolerances are quite tight and I suspect will vary from printer to printer. The gaps round the inner edges are 0.3mm so this should provide enough clearance for the parts to move. Tested using ABS so I suspect PLA will have even better results.