Soric lrc is really good stuff, and really good for spherical parts with medium-high loads, but it is less pliable than other kinds of soric (but much more than any ccf). And it produces slight hexagonal printthoughts, although much less than 3d core for example (Wich I could recommend for heavier loads and thicker laminates). If you look for a perfect cf finish, a second layer is necessary. I used 100 g/m^2 biaxial carbon for this with perfect results. Every closed kevlar weave should be fine, too. Maybe even 80g, as kevlar has slightly less density,  and therefore more volume. But I have to say that I use 240g/m^2 cloth for perfekt cf finish, wichtige might make a difference, too

Wau - That´s a beautiful racing mashine, i would love to try it
Best Regards Keld 

Hi Oekmont, Do you know where we can get some soric lrc 1.5 mm, I cant find it in Easy Composites shop, I would like to make some tests.

Best regards and thanks for your suggestions.

Just out of interest, how strong are the final kayaks you are making? Do they dent easily?
I really want to make a surf kayak but am struggling to decide on the perfect layup. Your layup sounds very thin compared to what I thought I'd need to use, so I'd be interested to know how they last. I assume these are sea kayaks?