Thin Super Glue Bob Smith Industries INSTA-CURE Gap Filling CA (2oz) [BSI108 Bob Smith Insta-Cure To prevent premature curing, don’t spread the glue into a thin film. Bob-Smith Insta-Cure Gap Filling 2oz Product Rank #7 in CA Super Glue #21 in Glues #146 in Building Supplies Works Best On: Balsa Wood and Soft Wood. This is a two ounce bottle of Bob Smith Industries INSTA-CURE ™ Gap Filling CA Glue. INSTA-CURE ™ is a higher viscosity CA for loose fitting joints in which the adhesive must bridge gaps. Normally, the thicker CA is applied to one surface and then the parts are held tightly together for about 5 to 15 seconds. For large surface areas, including those with close fitting joints such as... For large surface areas, including those with close fitting joints such as laminations, INSTA-CURE+ should also be used. Insta-Cure+™ Super Glue, CA - Bob Smith Industries Works Good On: Hard Wood, Glass & Metal, Fiberglass, Ceramics, Hard Plastics, Rubber, Laminating, Water-Resistant and Reinforcing.