Subtractive and Additive

Subtractive and additive is probably the most painterly printmaking form available in which a person applies ink onto plexi, to be printed on to paper. In subtractive, a large area of ink is rolled out, and you create your image by removing the ink. In additive, its like painting in which you apply ink onto the plate to make your image. Setswell is something you can add to the ink to make it easier to manipulate and print. Things to note when making your image would be that thick areas of ink will bleed, and be pull down your image, and the time it takes for you to make your image and to print it is drying time, the longer it sits on the plexi, more will dry and not come off.