As well as following your Araldite® pack’s guidelines, there are a number of things you can do to get the best results for your epoxy during curing time. These include:
Check your resin and hardener ratio
Use equal amounts of epoxy resin and hardener. Too much or too little hardener will affect the cure time and thoroughness of the cure. If this happens, remove the uncured epoxy and do not apply additional material over non-curing epoxy. Do not add extra hardener for a faster epoxy cure.
Check the temperature
You need to allow extra time for epoxy to cure in cool weather. If the temperature is too low, apply heat to maintain the epoxy’s chemical reaction and speed up curing.
Blend the resin and hardener thoroughly
For best results, you need to mix the resin and hardener thoroughly for an even ratio during application. If this hasn’t happened, remove the uncured epoxy. Don’t apply additional material over non-curing epoxy. And see clean up or removing residues when dry.
If the surface of the cured epoxy remains sticky, it does not necessarily mean the adhesive is not fully cured. Under certain conditions, the hardener can react with carbon dioxide in the air and leave a sticky layer on the surface. Normally, this layer can be easily removed with a wet cloth.