Which adhesive is the best to attach Kevlar braid fabric to cured epoxy carbon fibre. I want to make a living hinge for an aileron on an uav plane.

I would use a toughened epoxy glue or a methacrylate.

As the part is epoxy, you could use the laminating epoxy you used to make the rest of the part. If you are worried it is too thin and may soak into the hinge area, then a structural adhesive such as our ET515 Rigid 15min Epoxy Adhesive would work fine as it is quite thick and once cured also has a high flexural strength which means your bond will be more resistant to flexing than other epoxy types.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant