Скачать или смотреть Why Cast Saws Don’t Cut Skin | The Science Behind the “Skin-Safe” Saw

Ever seen a doctor bring a fast-moving saw right next to your skin while removing a plaster cast? It looks terrifying, but the truth is fascinating.
A cast saw doesn’t spin like a normal power saw—it vibrates rapidly, only about 3 mm. That tiny motion is powerful enough to cut plaster or even wood, but harmless to your soft, flexible skin.
Because the skin moves with the vibration instead of resisting it, the blade can’t grip or cut it—giving only a light push instead of a slice.

In this video, we explore the science, engineering, and safety behind the cast saw, and why it’s one of the safest medical tools ever designed.

#CastSaw #MedicalFacts #ProfessorOfWhy #ScienceExplained #WhySeries #HealthScience #HowThingsWork