"Typically when you're making things in carbon composite, you buy …

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https://newatlas.com/materials/nawastitch-carbon-fiber-reinforcement/
"Typically when you're making things in carbon composite, you buy sheets of carbon fiber-reinforced resin and lay them one on top of the other, gluing them together with epoxy and alternating the direction of the carbon fibers with each layer to tune the final piece for the loads it'll need to take.

According to N12 and now Nawa, the glue between the layers can be a weak point, deteriorating as the part bends. This can cause delamination, or simply undermine the strength of the part. Nawastitch reinforces the epoxy layers with super-strong VACNT arrays, and as a result, Nawa says shear strength is increased by a factor of 100, shock resistance is improved by a factor of 10, delamination simply doesn't happen and high-speed impacts result in 50 percent less interior damage. Composite parts can be reinforced like this with no substantial change to the regular manufacturing process."