Carbon and adidas printed one tuned lattice instead of molding many foams

Running-shoe midsoles usually require a slow loop: design a foam, cut tooling, mold samples, test them, then repeat. That makes local tuning hard because every change can become another tooling job.

Carbon's clever move was chemical rather than mechanical. Its process balances ultraviolet curing against oxygen inhibition, maintaining a liquid dead zone below the part so the object rises continuously from the resin instead of being peeled layer by layer.

adidas used that capability for Futurecraft 4D. It shaped cushioning and stability zones from 17 years of running data and printed them as a single lattice midsole, with 5,000 pairs planned for retail in fall/winter 2017 and more than 100,000 by the end of 2018.

Make cushioning a printable lattice

The oxygen dead zone attacked the peel-and-repeat bottleneck of stereolithography.

Lattice geometry let one material behave differently in heel, midfoot, and forefoot zones.

Printing the tuned structure as one part avoided the assembly and quality issues of joining separate cushioning pieces.

When tooling makes iteration expensive, move performance into a programmable geometry that the process can produce directly.

Futurecraft 4D made Carbon's process visible outside prototyping and positioned adidas to treat midsoles as data-shaped components. The larger lesson was not that every shoe should be printed, but that additive manufacturing becomes useful when it removes tooling from a high-iteration component.