I've been working woth the methyl cellulose size. I prepared two
tanks - one smaller that I used Golden Fluid acrylics in. I have had
to add quite a bit of water to the paints to make them float. They are
working, but the size gets dirty very quickly, even with lots of
skimming, because some of them are still sinking.
In the other tank, I used Jaquard Dy Na Flow paints on. They work,
but have a LOT of suractant in them already, so the colors have
been coming out pale. I alumned all the papers. I was even able to
make a spanish wave effect in the larger tank.
One person said that Methyl cellulose and carrageenan gum sizes
are like Fords and Chevys to people - some like one, some like the
other. I have also read that carageenan gum makes sharper lines in
the designs, and that some people even like a 50/50 mix of the two.