Why is my epoxy sticky and tacky? Shenzhen Little Sparrow Epoxy Resin

If your epoxy resin hasn‘t cured properly, it means that the chemical reaction between the resin and hardener did not take place. Sticky resin is typically caused by inaccurate measuring, under mixing, or working in cold temperatures. Move your project to a warmer spot. If it does not harden, then remove the resin and pour a fresh new layer.