Hi,
I tried to create an heavy duty hinge with the carbon starter kit but I came across the same mistake every time apparently.
I "paint" a glass surface with the PVA release agent and let it dry for 20 minutes then I applied a layer of epoxy resin mixed with the epoxy hardener ( ratio 2/3 epoxy and 1/3 hardener) and let it dry for 2 hours.
I weight the number of CF sheet I will use and the following relationship to decide which amount of resin I should:
Epoxy Hardener weight = CF weight
Epoxy Resin weight = 2 * CF weight   

I lay each layer of carbon one after another "paint" the resin on it and remove the excess resin from time. Leave it alone for the night.

First: no way I can separate the CF from the glass surface. Should I leave the resin solidify for precisely 8 hours or "at least" 8 hours that may explain why the two are "glued" permanently together.
 
Second: once I had a strange reaction in the pot where I mixed the epoxy & the hardener. It started to get really hot with fumes and it solidified almost instantly. What did happen? how can avoid that?

I'm aware that for an hinge resin infusion is more likely the best course of action but my lack of success with this technique  and the entry cost prevent me to use it.

Thanks in advance.
Benji