3M™ Scotch-Weld™ Surface Insensitive Adhesives bond rough, porous, contaminated, and acidic substrates including wood, cardboard, veneer, fabric, cork, and leather. SI1500 is a surface insensitive cyanoacrylate that has high viscosity and has excellent gap filling capabilities. It relies less on surface moisture for cure speed than standard cyanoacrylates.Information provided by 3M |