I have heard the term "body gum" used in discussions of ink additives. What is body gum?
Mar 28, 2018

Body gum is linseed oil that has been polymerized. It is used as a stiffing additive when ink is too viscous and "pulls the ink together" when the ink is causing scumming, tinting, and chalking on coated papers. Linseed varnishes #8, #9, and #10 are referred to as body gums. Always check with your ink manufacturer for the compatibility of an additive before modifying your ink.

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