<<< I have entertained the idea of using a piece of ground glass as
a light defusing device.>>>
Probably the best might be to use a sheet of opal glass as a
diffuser; you may be able to find one in an old Kodak transparency
viewer. By using an array of bulbs as you planned, you gain the
advantage of being able to dodge prints in the lamphouse by virtue of
switching the lamps individually. Sort of like an old Morse contact
printer on steroids. It's a thoroughly workable scheme and you could
even make your own groundglass diffusers fairly easily and cheaply with
valve grinding compound and ordinary picture frame glass.
With a large area of bulbs like that, you should also consider
adding in a whisper fan or two for cooling the lightbox. They are well
balanced, quiet and around $20 for 115 volt units.
bye, sid.
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