See   http://www.f295.org/Pinholeforum/forum/Blah.pl?
b-cm/m-1173887464/ for some additional details

Winder collar, glue entire area

dotted area to cardstock and drill or

cut hole and insert dowel before

cutting out.

Sliding

shutter

Shutter

channel

Shutter Assembly

glue entire area dotted area to cardstock and cut

hole or drill and enlarge before cutting out.

Alternate

cut for

scissors

only

Internal

Assembly

Film bay

spacers

Film

counter

shutter