How long does it take for epoxy glue to set?

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Accordint to Locetite [1],epoxy is a two-part adhesive that forms when you mix epoxy resin and hardener. The two substances are stored in different containers and are only mixed together when you’re ready for gluing – which you can do using a double syringe, for example. You should keep the mixing ratio 1:1, otherwise the resin will not cross link. After you mix both components, the pot life begins. That is the period during which the parts to be bonded can still be moved and changed. The pot life can range from a few minutes to a couple of hours depending on the glue you use. After the pot life, the glue needs several hours to reach maximum strength.

According to Permabond, full cure of a two part epoxy can be several days.  However adequate strength for further assembly, or packaging can be reached within minutes or hours.  To increase full cure speed, heat can be used.  The general rule of thumb is for every 10C increase in temperature the cure time is cut in half.[2]