tThe Atlas Polystyrene Glue 125ml is an acid-free, specially formulated adhesive engineered to bond delicate foam surfaces safely without dissolving, melting, or warping the substrate. It sets within approximately one hour, providing a durable, clear-drying bond that effectively connects polystyrene to itself or to other clean, firm materials like wood, paper, and cardboard. This non-corrosive, easy-to-spread formula is a reliable choice for architectural model building, signage creation, insulation adjustments, and general hobby crafts.