Here is a 5x7" bellows design (with instructions) that should enable you to make a field camera bellows with little difficulty. The design allows for a 5x7" rear and 3.5x3.5" front standard. This is big enough for most lenses using Copal 0 or 1 shutters. The maximum extension is around 20".
Due to posting limitations the .vsd (Microsoft Visio Drawing) file had to be renamed to a .pdf (Don't bother trying to open with Acrobat Reader). Save the file somewere and rename it to a .vsd extension.
This is FREE for personal use and can be redistributed in original unmodified form. You can of course send me cash, gold or Dimezone-S if you really like it and feel guilty about receiving it for free. :rolleyes:
I take no responsibility for fingers glued together or veterinarian bills related to surgically removing your own / wifes / girlfriends cat or dog from the half constructed bellows. No virus was present in the file when I uploaded it.