As a result of our inagural meeting a member thought it'd be great to model and print a clip for his patio door that had broke. It was make or buy. In this case we were able to make.
It took 20 min or so, SketchUp, a calipers and some coffee but we got it done.
Check out the Thingiverse listing — http://www.thingiverse.com/thing:15366
What would you like to model and print?

