The original! No shrinkage, no odor. Plenty of working time, after 1 1/2 to 2 hours it will harden and form a tenacious bond. Cures to ultimate hardness in 24 hrs. This is what you use to make the eye lids on your birds and ducks. Blue/Yellow ("Green Stuff") is a two-part epoxy/polyamide sealant/adhesive for interior and exterior maintenance and repair. It has excellent adhesion to stone, ceramic, metal, wood and many plastics, including vinyl. Nicknamed "Green" by sculptors and modelers, Blue/Yellow is well-known for its long worklife, non-grainy texture and ability to hold fine detail. Cut or twist off a length of tape and mix by kneading with damp fingers to a uniform color. Any length contains the correct ratio of base to curing agent. Apply within 1 hour of mixing.