Re: Gum prep and Gloy substitute & tempera

LESMD@aol.com
Mon, 4 Mar 1996 11:31:52 -0500

Judy
You're right of course, it doesn't take three full days to size and prepare
paper , it the drying that takes the time. At times I've used a microwave
oven to speed up drying without apparent ill effects . Have you every heard
of ill effect from such a quick drying technique.

With all this talk about substitutes for gelatin sizing, I have begun to
worry that my use of Knox's gelatin (used in food preparation) may be causing
some of the inconsistancy. I found in a chemical catalog two versions of
gelatin hard and soft 250 and 50 "Bloom". From a posting by Terry I see that
his deionised ossein is 260 Bloom, is 250 close enough and beside which
what's a Bloom.

Larry Shapiro