Review on Speedball 3940 Professional Relief Supergraphic by Karla Richter

I've blocked working with Speedball Printing Ink and wanted to try the professional version. The consistency is better and gives better print results, but the ink takes a ridiculously long time to dry. I've printed onto a thin blank MDF board (which is more porous than I thought) and onto a board painted with acrylics and the ink still feels tacky almost 10 days later. I had it on a sunny window in a dry studio and it's still not completely dry. Drying time must be anticipated ahead of future projects. This tin container that holds the ink is the largest. Two cans were crushed in transit.