bwpuk Member Allowing Ads Joined Feb 3, 2008 Messages 3 Format Medium Format Aug 24, 2020 #1 I'm a new to gum printing. Can any of you experienced printers out there tell me how long a made up gum solution with formalin preservative will last for without spoiling ?
I'm a new to gum printing. Can any of you experienced printers out there tell me how long a made up gum solution with formalin preservative will last for without spoiling ?