I'm starting a new camera project and this time I want to go from scratch.  
I will like to build a field camera starting from a lens of one of the first XEROX copiers that has a very nice diaphragm but, obviously, it has no shutter.  
 
The l

Hi pablo! you can try using a galvanize sheets .22mm
thin. i repaired my bessa 66 vintage folding camera which has a broken shutter,which i forgot to notice and check the shutter during the time i acquired it.
check my flickr photostream,MICHAEL

The best material is ordinary shim steel stock - available from any good engineering supply company. Just cut out the number of requisite rectangles, stick them all together with double sided tape and then cut to shape. Socking in solvent will soon loos