Re: gelatin mix

David,

>sandy,
>
>the pigmented gelatin mix is as follows:
>
>500 ml. water
>56 grams of knox gelatin
>12 drops of glycerin
>30 grams sugar
>5 drops of sumi ink

I think the problem is definitely one of too little pigment in the
pigmented gelatin solution. 5 drops of sumi ink seems far too little
for me. For 500ml of solution I would recommend a minimum of 10-20ml
(or grams) of sumi ink.

>
>i coated on a thin flexable sheet of plastic 8x10 in size. each piece
>received about 100 ml of solution which was poured on and smoothed out
>with a rod, which had tape on each side to give some thickness to the
>gelatin. I think what happened was that it lost its thickness as it
>settled because i didn't have anything around it to keep it in place.

I would definitely need a frame to coat 100ml of gelatin on an 8X10 sheet.

>
>sensitizing was carried out in a tray of 6% potasium dichromate for 3
>minutes.
>
>4 minute exposure.
>65 degree water for 90 seconds.
>20 minutes sandwich time
>105 degrees for 3 minutes at which time i pulled the temp. support from
>the final support. i could see at this point in time that the shadows
>were weak but i continued for 3 more minutes to check for the high
>values. they looked very good.

Everything else sounds good to me. Good luck on the next attempt.

Sandy King

>
>thanks
>david
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