Katana to Kitchen

Bevel Type Analysis

RyobaOuter IronOuter IronCenter Steel Edge

Double Bevel (Ryoba)

Double-bevel (Ryoba) blades are ground symmetrically on both sides. This splits the cutting force evenly, making them intuitive, easy to guide straight down, and highly versatile for home cooks cutting meats, veggies, and general ingredients.

Cutting Mechanics

Single vs Double Bevel Cut Mechanics

Single-Bevel (Kataba)Ingredient (Fish / Daikon)Straight CutPushes Slice Away✓ Clean slices without crushing delicate fibersDouble-Bevel (Ryoba)Ingredient (Meat / Vegetables)Equal Splitting Force✓ Intuitive straight cuts, easy for all home cooks
knife

Kawashiri Cutlery & Tools

Kawashiri Hamono

Description

Kawashiri has been a blacksmithing town since the late Muromachi period and flourished during the Edo period. They are known for highly durable double-bevel kitchen knives and heavy agricultural tools like hatchets and axes.

Best For

✓ Agricultural tasks
✓ Woodcutting
✓ Heavy duty prep
✓ General utility

Blade Characteristics

  • Nokaji (field blacksmithing) techniques for making daily necessities.
  • Traditional forging methods for saws using Yasugi steel.
  • Focus on extreme durability for Kyushu's dense mountain foliage.
  • Robust double-bevel construction.

Steel Recommendations

For this type of blade, professional makers typically suggest: VG-10, SG2 (Powdered High Speed Steel), or AUS-10 stainless steel for excellent corrosion resistance and robust daily use without chipping.

Famous Regions

This cutlery type is famously forged and crafted in:

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Knife Anatomy

Parts of a Traditional Japanese Knife

Tip (Kissaki)Fine slicing & piercingSpine (Mune)Back ridge of the bladeRidge Line (Shinogi)Cutting Edge (Ha)Primary sharp slicing edgeHeel (Ago)Eye coring & heavy prepNeck / Gap (Machi)Handle-to-blade clearanceCollar (Kakumaki)Buffalo horn / collar bandHandle (E) & TangMagnolia wood + inserted tang