By the 1960s, plastics had risen to prominence in American life, including the hobby industry. Almost all model kits on the market were plastic, necessitating paints (the square, glass Testor paint bottles were sold in almost every dime store, department store, hardware store,toy store and hobby store in the US in the 1960s, making them truly ubiquitous) and glues different from those used for wooden models. Although Testor had been producing such chemicals since the 1940s, it had resisted producing plastic model kits for quite some time.