Re: Gum questions

Albert Strauss (a.strauss@worldnet.att.net)
Wed, 3 Jul 1996 11:19:39 GMT

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>>2. Can anyone comment on the effectiveness of gelatin sizing by sponging
> one side as opposed to dunking, and the effectiveness of hardning by
> including the formalin in the gelatin instead of a separate bath.
>
>Make sure the temperature of your 3 % gelatine is above 38 C when you apply it
>with a hake brush kept for the purpose. Use heavier papers, 250-300 gsm. I
>prefer to use a dichromated gum size where you dry the unpigmented but
>dichromated gum in the dark expose it for a couple of minutes and then wash
>until the dichromate has cleared. I avoid unnecessary nasties so I do not use
>formaldehyde.
>
>Terry King
>

Terry,

I have tried sizing with dichromated gum. What happens is that I get a beige
or a bone color unless I give it an extremely short exposure. WIth this
exposure I'm not confident that the gum will not wash away. Soaking the
paper overnight does not wash this color away. Any suggestions ?

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