Quick dry epoxies that are used as glue generally don't hold up well in the long run. 5 minute expoxy lasts about 5 minutes. It will turn yellow and fail. The most durable epoxies, like Brownells Acraglas , take all day to dry and hold up forever. There are exceptions. The stuff often seen on automotive counters is quick dry and seems to be really tuff stuff. probably the same stuff creeker mentioned. It is usually black, and is like a putty, not like a thin glue.