I make a working knife from a bearing from a helicopter propeller made in the USSR. Manufacture of forged knife No. 365. Blade steel is possible SHX15 low-temperature forging. The handle is G10. In this video, the manual forging of the blade, hardening, making the handle of the knife. Low-temperature forging is carried out on gas in a reducing flame. The principles of low-temperature forging are described here - http://www.kuznec.com. Testing of the knife is carried out in Moscow on the Opening Day according to the standard scheme for rope cutting championships. The F37mm hemp rope is used. The knife is sharpened with diamonds, the finish is 1/0. The cut of the rope is carried out by a section of the blade with a length of 75 mm. Every 50 cuts, a control measurement of the force applied to the knife is carried out on a polyamide cable on a scale, on a section of the blade with a length of 50 mm. The cut is carried out up to the force on the scales of 7kg. The reference knife on this rope makes about 130-150 cuts with a force of 7 kg, which is enough for cutting one boar without sharpening.
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The video of rope tests is provided by Ivan 199, other tests can be viewed on his ttps channel: / / www. youtube. com/user/ivanich68/feed