The far jaw of the vise should press against the two outer dowels. Step 4: Place the sword in a vise with the edge facing upward. The more acute the angle of the bend, the closer the two dowels will be to the center one. Obtain two more dowels and use rubber bands to attach them on the opposite side of the blade at the beginning and end of the bend. Step 3: At the middle marking on the tape, attach a short length of half-inch dowel across the blade at a 90-degree angle. Masayuki Shimabukuro in action (Photo by Rick Hustead) Then mark where the bend starts and stops. Use a pencil to mark the tape at the center of the bend. Step 2: Prepare the blade for straightening.ĭetermine where the bend or twist begins and ends and place a piece of masking tape across the convex, or outwardly bowed, section. If improper technique is used, it might eventually break at the same point. The steel in the affected area can wrinkle during the bending and straightening process.
KATANA BLADE CRACK
If the edge has a crack or the blade is fractured at any point, don’t attempt to straighten it or use it for cutting.Ī bent blade will tend to bend again at the same point. If the edge has a chip, it must be polished out before you attempt to straighten the blade. Step 1: Inspect the blade for damage other than the bend or twist. Samurai Swordsmanship is a best-selling book Masayuki Shimabukuro and Carl E. Prior to beginning any work, put on safety goggles and Kevlar gloves. Furthermore, it has a curious appetite for its owner’s flesh. Before you begin, some words of caution are in order: A bent sword cuts flesh as easily as a straight sword. Among them are “straightening sticks,” or implements that will help him remedy bends as well as twists.Īlthough these tools and methods are best left to the experts, there are more conventional ones that can aid you should you need to tweak your sword yourself. He’ll have at his disposal several methods and tools designed specifically for straightening blades. It should be corrected by a specialist who has experience working with steel. Young)Ī sword bends because of damage to its internal crystalline structure. The fact that a blade bends in lieu of breaking while sustaining no edge damage reveals that its metallurgical structure is in good condition.
A blade that bends is preferable to one that breaks, chips or cracks along its edge. Strangely enough, bending is the good news. Even a well-manufactured mono-steel blade or traditionally folded-steel model will bend or twist if your technique is off. A bent sword can be the result of using a poor quality weapon, an incorrect cutting technique or both. If you regularly cut tatami mats or bamboo, you’ll become an expert at not only cutting but also bending or, rather, straightening your sword.
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