A knife 100 includes a body 102, and a blade slider 104 slidably mounted within the body, the blade slider configured to hold and slidably move a blade 110 relative to the body. The knife further includes a blade snapper 106 pivotally coupled to the body, positioned such that when the blade slider selectively positions the blade to be engaged by the blade snapper, pivotal movement of the blade snapper imparts a force on a blade segment 112 of the blade to detach the blade segment from the blade.
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