How to make a knife from a bearing race
It is shown how to make a working knife from an aircraft roller bearing race.
I invite you to watch the video “How to SHARPEN A KNIFE”:
• Как ЗАТОЧИТЬ НОЖ
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Address of this video:
• Как сделать НОЖ из обоймы ПОДШИПНИКА
This clip is made of steel 08Х4В9Ф2-Ш (ЭИ-347 Ш). Bearings made of this steel are marked with the letter P.
This steel contains 9% tungsten. Therefore, it is self-hardening - samokal.
I took this particular steel for the knife because I straightened the clip while it was hot. And after forging, the blade did not need to be specially hardened. Air cooled. And I got the required hardness - 52 HRC.
Shows how I made the knife.
I straightened the clip while it was hot. The blade was unforged. I processed the blade first on a grinder: I shaped it, first I sharpened it, and made bevels. I haven't sharpened the cutting edge yet.
I made a knife handle from birch rhizomes. I hammered a blade into it with epoxy glue.
The handle was first treated with an electric plane.
There is a winding pattern on the tree because it is a birch rhizome. And the fibers change direction. Therefore, when planing, burrs occur in some places - where planing goes against the grain.
Therefore, I did not process the handle with a plane anymore. I started processing the handle on a grinder and gave it a shape. Then I processed smooth transitions on an angle grinder with a flap wheel, then with sandpaper. Coated with mineral oil.
Then I finally sharpened the cutting edge of the knife, first on a grinder, then on abrasive wheels of different grain sizes, and then with GOI paste.
The result is a convenient working knife from a bearing cage.
Hardness 52 HRC. I didn’t do the hardening on purpose, I cooled it in air, because the bearing steel was self-hardening the bearing race