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When Voyager 1 and 2 crossed the boundary of the heliosphere, many believed they would drift silently into a cold, empty ,voidinterstellar space. It was expected to be a lifeless region, too sparse ...
Forging a knife with 32 steel balls hidden inside the blade! In this experimental knife-making video, we groove a steel plate, add 32 solid steel balls, and forge them into a single, functional knife.