After putting some laminating resin on my CF tube it has been curing for well over a week. It is dry but has a sticky feel to it, and there is some uncured epoxy. My dad says it didnt have enough hardner. I am using a pump system for the 3-1 ratio. Any tips? I have noticed it doesnt mix as well as thick epoxy but I have been mixing it for up to 5 minutes. The tubing is fine, but the reason I ask is I need a very runny thin epoxy to inject into the fin can of a small rocket to strength the fin joint. The laminating epoxy would be the thinnest I know of but I would like to make sure it will cure fully. any ideas?