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For this revolutionary and extremely small locking device for spring hinges in spectacles the minimized size is combined with a complex shape. For a safe locking function the geometry of the part had to be designed with special features and produced in large volumes.
The component was designed from the beginning to be made using
MIM, as its weight of only 0.028g and high precision, meant only MIM could
guarantee the necessary specification. This is also due to the huge quantity per
year needed using a 32 cavity mould.
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