A HELI-CAL® machined spring is a single piece of material machined into a spring configuration. Using a proprietary process, Helical Products creates the HELI-CAL® flexure for couplings, machined springs and one-piece custom solutions that integrates attachments, and simplifies assembly. Because HELI-CAL® springs are “machined” to specific design requirements, they provide more precise performance than traditional springs. Multiple start flexures are beneficial because they not only provide redundant elastic elements should a failure occur, but a failed element (coil) will be physically trapped by the remaining one(s). Learn more about machined springs with multiple starts with our “Flexure Tech Tips”.