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The clear resin you get from craft stores is intended more for encapsulation/casting and the hardener isn't as strong. You have to use more hardener if you use casting resin...but its easier just to avoid it and get laminating resin.
If your composite is not hardening, sometimes you can bake the composite in an oven at low heat, around 150degrees, for a few hours and it will harden it...sometimes even direct sunlight for a few hours will harden it. KEEP AN EYE ON IT! Hardener has a exothermic reaction and applying too much additional heat to it can cause a fire.
To remove uncured resin there is a special formula of "tack remover" that will clean the sticky resin up nearly instantly. I pay 50cents for a few quarts.The best bet is to just not get any on you in the first place. Also the more you are exposed to resin the greater the chance you will form an allergic reaction to it. Some people use it for years no problem, some people use it once or twice then start breaking out in hives. The less exposure you have, the less chance you develop an allergy to it.
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