Angelus 2-Thin For Acrylic QUART2 Thin is perfect when you need to thin out our Angelus Leather Acrylic Paint. It keeps your shoe paint from clumping on a mesh surface, and it's great when you're using airbrush for your customization. For airbrush applications, we suggest using a 1 part 2 thin to 4 parts paint ratio (1: 4). Our Reusable Paint Strainers work great to remove all imperfections in the paint.