Eli5: how do modern cutting tools with an automatic stop know when a finger is about to get cut? 738 viewsJanuary 3, 2024 Question99.87K July 13, 2021 0 Comments I would assume that the additional resistance of a finger is fairly negligible compared to the density of hardwood or metal In: Engineering 8 Answers ActiveNewestOldest Anonymous Posted July 13, 2021 0 Comments The saw blade carries an electrical current, and the braking system monitors this. When your hand touches the blade, your *electrical* resistance changes that circuit and triggers the emergency stop. The stops are quite violent, so don’t test this. You are viewing 1 out of 8 answers, click here to view all answers. Register or Login
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