Kneadatite Blue/Yellow Green Stuff is a two-part room temperature curing epoxy putty sold either in ribbon format. The mixture of equal parts of the yellow "filling" and the blue "hardener" produces a sticky green putty that is very similar to chewing gum. Once blended, it has a shelf life of 90 minutes, allowing time for shaping and detailing, reaching the "ultimate hardness" after 24 hours. By changing the mixture with more blue or yellow components, you will achieve faster, slower and harder/softer hardening. We recommend using a little lubricant to prevent Green Stuff from sticking. Normally water is enough, but some people also use others like petroleum jelly, petroleum jelly or even jhonson oil to get smooth surfaces. Keep wet fingers and tools to facilitate the carving and modeling process. You can also add talcum powder to reduce adhesion and prevent fingerprints. This pack contains 46cm of fabric.