Rassini’s 1+C Hybrid leaf spring features a single steel parabolic main plate and a flat glass fiber composite helper plate to provide suspension on the rear wheels of the Ford F-150 pickup truck.

An old steel spring, commonly used in automotive or industrial applications, becomes the raw material for this custom knife build. Spring steel is valued for its durability and resilience, making it a ...

A Damascus knife is forged using 100 steel springs, demonstrating the transformation of industrial materials into a functional blade. The springs are heated, flattened and layered to form a billet ...