The Blockwise Top-Loading Crimper (patented) is a 6-jaw radial compression mechanism with a slot that allows the parts to be loaded radially. The slot opens automatically as the crimper is actuated beyond the fully-open position. The crimper is used to radially compress parts such as marker bands, electrical or mechanical ferrules, or steel tubing or bands as part of an assembly process. Parts are formed into a hexagonal shape by the 6 jaws. Compared to collet crimpers, the Blockwise top-loading short crimpers cover a wide diameter range without tooling changes and provide a crimp with less flash. The mechanism uses Blockwise “Zero-G™” technology, eliminating gaps between the dies. We define a “short crimper” as one with short working length (typically less than 10 mm), while a “stent crimper” has a longer working length, and typically also more dies.