From: Monnoyer Philippe (monnoyer@imec.be)
Date: 06/05/02-05:38:10 AM Z
Dear Andy,
I have been making holographic silver gelatin glass plates during 2
years. I used then glass sheets made for LCD displays and notebooks. A
glass manufacturer will certainly give you a 100 sheets sample for free.
Indeed they produce so much glass of that kind that it should be no
problem. In my case, I just payed the administrative costs.
Once you have it, cut it to dimensions (tungsten carbide TOYO tip,
diamond TOYO tip). Then wash it the right way (check in old books, soap,
strong base, distilled water, sulfochromic bath, but I would definitely
avoid that last one), rince with several distilled water baths and let
dry away from dust.
For making the emulsion, frankly speeking, make sure that you want to
spend time on research. Controlling everything could take you years. But
you can get results quite rapidly (contact me off-list). I now a Richard
Maddox that might certainly help you too. Richard, are you there ?
If you want orthochromatic or panchromatic emulsion, you'll need to get
the right dyes, that are pretty expensive too (H.W.SANDS).
Why not to consider making collodion plates in a first attempt, or
"glass-calotype", or even liquid emulsion coating.
For coating, choose the rod coating technique (see R.D.Specialties
Rochester for the rods). I would start with something like a 85G rod.
Always clean your rod with warm water directly after use.
In summary, it's easy to make a basic silver gelatin emulsion, blue
sensitive. It's also quite easy to have it ortho or panchro.
What will be hard is your reproducibility and the shelf life or your
plates. One needs to add stabilizers to keep it more than one week.
So many parameters.
But getting a first result will be fast.
Wish you success,
Philippe
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