/cgl/ - Cosplay & EGL

>Mixed some Easy Cast epoxy resin
>was told that heating the two parts up first helped keep out bubbles and increase viscosity
>Heated up bottles in hot water
>Mixed a large amount for large gem
>Do the two step mixing
>Start to add color and it isn't going in quite right, kind of seperating into tiny globes instead of mixing
>Get up to see if I have another color dye
>Come back and cup is melted and the thing is already cured in some parts

WTF did I do anons? Too much pre heating? I've used this stuff a lot cold and this never happened