Can’t find name of a product used in carbon fiber repairs Several years ago, I watched a youtube tutorial about repairing carbon fiber. I can’t find that video now, but one of the first steps, before applying sheets of cabon fiber, the guy used a compound that was a mix of carbon and epoxy applied down inside a crack, where the sheets couldn’t be forced in. It was kind of an extra step just to maximize strength as much as possible. It was a charcoal color, and it was sanded smooth before applying carbon sheets. I can’t figure out what it was called, but I need some. I guess it’s possible the guy made it himself...

Anyone know what it’s called?
I found the video, and it turns out my memory was off. It’s a graphite powder mixed with epoxy. He doesn’t explain why he used graphite, but that layer of resin was only to prevent air leakage from inside the tubing during the vacuum stage, and probably also to help the carbon sheets lay flat. Perhaps the graphite was added to make the resin more sandable? In any case, it wasn’t a carbon mixture, and it does not provide strength to the repair.

I would be interested in hearing if anyone has knowledge of such a product.