Knife for a semi-jointer, PETROGRAD, sherhebel pit, 50mm * 175mm. Also suitable for the PETROGRAD # 4 planer. The piece of iron is made of steel 9XC. Hardened to 59-61 HRC. Has dimensions: total length 175 mm, width 50 mm, minimum thickness 2.2 mm, maximum thickness 3.5 mm. Sharpening angle 30 °. All glands are wedge-shaped with a wedge angle of 0.5 °.
What sets it apart from others is ideal for wedge-fixed wooden planers. The knife has two sides - one hard, one soft (production feature).
Each knife is tested with a hardness tester. The hard side has 2 points from the diamond cone - test, and control test.
Production - Russia
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