Mix this medium with acrylic paints such as Specialist Crafts X4 or X6 to produce a good quality screen printing ink. Depending on the ambient temperatures the mix dries in under 10 minutes which speeds up working times. As with all acrylic-based inks prevent screen meshes from clogging by removing excess colour with a damp sponge. Mix the medium and acrylic together well at a ratio 1:1. 2 litre jerry can.