On Thu, 16 May 1996, Judy Seigel wrote:
>
> Exploration of Liquid Light continues underground here in Greenwich
> Village USA. Ig is about to put some images on glass, but we need some
> help. Instructions from manufacturer say use gelatine as subbing
> solution. Two problems (and the "expert" at the company can't be reached on
> the phone -- so far):
>
> 1. It says use 1 teaspoon of gelatine to a pint (500 cc) of water. This
> is surely an error, because that's 4 grams, or less than 1% solution,
> which doesn't do anything, doesn't even set when cold. I figure at least a
> 3% solution, but can someone say for sure?
>
> 2. For each ounce of gelatine solution, instructions are to add 10 drops
> of a hardener bought separately for $2 per ounce. Since large amounts of
> gelatine are required to dunk big items, and since I have a jar of the
> stuff in question (Chromium potassium sulfate, or chrome alum) it would be
> a significant saving to mix our own. But we haven't a clue about the %
> solution. I'd guess saturated, or nearly so, but.......?
>
> I'm hoping Sandy King will know the above, but ask all gelatin mavens for
> info, suggestions, advice.
>
> Thanks 100% solution,
>
> Judy
>