Quote Originally Posted by GLSmyth View Post
You can use magnesium carbonate to stiffen lithographic ink. A source for this would be Bostick & Sullivan: http://www.bostick-sullivan.com/cart...=search&page=1

Cheers -

I read that, do you know in what ratios of Magnesium to Ink. I tried a 1:1of Magnesium Sulfate but didn't seem to effect it.

I did mix plain old candle wax and that certainly harden it up, but how it work I'll have to wait and see until after Christmas.