George,
I make the shutters myself.
The black disk is a sandwich of several layers of model airplane
plywood. The aluminum or brass sheet of the shutter itself
slides back and forth through a slot built in to this sandwich
when the layers are stacked up.
The shutter return springs are taken from ball point click pens.
I have found them to be reliable and quite light-tight when closed.
Eric Molczan
_______________________________________________
Post to the list as PLAIN TEXT only - no HTML
pinhole-discussion mailing list
pinhole-discussion@spitbite.org
FAQ at http://spitbite.org/pinhole-discussion/list.html
Received on Mon Aug 22 17:27:23 2005
This archive was generated by hypermail 2.1.8 : Tue 31 Jan 2006 - 02:01:01 PST