Iris
grabcad
Simple iris mechanism based on a DXF file from a woodworking site on the net other such site offer instructions and files to help such as 'instructables'
Download Model from grabcad
With this file you will be able to print Iris 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 Iris.