What is Enma from One Piece?

A powerful sword capable of cutting mountains.

What materials are used to make Enma?

W2 tool steel for toughness and durability.

Approximately 24.5 to 25 inches.

A careful process involving clay application and heat treatment.

Crafted from purple heart wood with a unique frame handle design.

Enma from One Piece is a formidable sword that can slice a mountain in half with one stroke, constructed meticulously from tough W2 tool steel following traditional forging techniques.
Despite initial setbacks and dissatisfaction with the first attempt, the individual perseveres, learning from mistakes to create a successful second version of the blade with improved features, including a carefully crafted habaki, guard, and handle, showcasing dedication to the craft and attention to detail.

What is Enma from One Piece?
A powerful sword capable of cutting mountains.
What materials are used to make Enma?
W2 tool steel for toughness and durability.
How long is the blade of Enma?
Approximately 24.5 to 25 inches.
What is the quenching process for Enma?
A careful process involving clay application and heat treatment.
How is the handle of Enma made?
Crafted from purple heart wood with a unique frame handle design.

00:00

Enma from One Piece is a powerful sword capable of cutting a mountain in half with one slice.
The blade being built is made of one-inch wide and almost half-inch thick W2 tool steel, known for its toughness.
Traditional forging methods are followed, including cutting material at a 45-degree angle and forging the longer side of the bar.
Beveling the blade involves establishing the bevel line, setting the blade shape curve, and beveling the opposite side of the edge.
The blade's length is aimed to be around 24.5 to 25 inches, following historical katana standards.
The forging process takes around 3 to 4 hours, with meticulous attention to detail and reference to traditional katana-making techniques.
Normalization of the blade is done in three cycles at specific temperatures to refine the grain size and prepare for heat treatment.
Clay is applied to the spine of the blade using a mixture of Forge scale and satanite for heat treatment preparation.
The blade undergoes a quenching process in the forge, with careful temperature monitoring using a magnet to ensure proper heat treatment.
After initial issues with the heat treatment, adjustments are made to the clay application and heat levels for a successful second quenching attempt.

17:15

The individual is dissatisfied with the initial creation, deeming it a piece of garbage and opting to forge a new one.
The second attempt at forging the item is more successful, with improved features like spine bevels and a distal taper.
The individual undergoes multiple normalization cycles and grinds off oxides before preparing for quenching.
A mistake in the quenching process leads to frustration and fatigue, requiring a fourth quenching attempt.
A field trip is taken to acquire materials, including a longer PVC pipe, brass, and purple heart wood.
The habaki, a copper spacer under the blade, is meticulously crafted through hammering, heating, and bending.
A wedge-shaped piece of copper is ground and soldered to the habaki, requiring precise fitting and soldering techniques.
The habaki is finalized through grinding and shaping to fit the katana perfectly.
The guard, or suba, is crafted from a thick brass sheet, with intricate circles drilled and countersunk.
The handle is made from purple heart wood, with a unique frame handle design to avoid traditional carving methods.

34:36

The sepo was 1/16 of an inch thick, while the guard was 3/8 of an inch thick, both made of solid brass.
Filing the channel to fit the Tang took around five to six hours.
The Katana weighed one pound and 12 ounces before grinding.
The purple belt used for rough grinding lasted through both Katana rough grinds.
The Katana was convex and zero ground using a 400 grit atoma Diamond Stone.
Hand sanding the blade required four different positions for polishing.
The handle block was shaped, drilled, and bedded onto the Tang using epoxy for a tight fit.