"MARUKIN" Standard Thick Chisel Shirogami no.2 steel, 3mm~24mm

■Size: Blade length approx. 85mm, neck length approx. 85mm, handle approx. 125mm

■Weight: Approx. 305g

■Material: Shirogami No. 2 steel + extra soft iron

■ Pattern: Red oak pattern

■ Use: Mainly used for processing structural materials

■Features:

This is our most standard professional chisel.

The blade is handmade using white paper No. 2 steel.

It can be used by many people, from the general public to professionals.

■Note:
The down ring needs to be sunk.
The wooden handle is made of natural materials, so the color of the actual product may differ from that shown in the photo.

■Need Setting Up Katsura before to use

About the Katsura (Ferrule) on Japanese Chisels
Japanese chisels have a steel ring called a katsura on the end of the wooden handle.
Before using the chisel for the first time, the katsura needs to be prepared.
This helps prevent the handle from cracking and makes the tool safer and longer‑lasting.

Step 1: Remove the Katsura
Lightly tap the end of the handle with a wooden mallet to loosen and remove the katsura.
Do not pry it off with force, because it may bend.

Step 2: Chamfer the Katsura
Use a file to round (chamfer) the edge of the katsura.
Some katsura are already chamfered, so check first.
The katsura has a correct direction:
- Thick side → end of the handle
- Thin side → blade direction
When chamfering, file the thin side at a shallow angle.
If the handle is not chamfered, the sharp edge of the katsura will cut into the wood.
Then it will not go in deeply and may come loose later.
If you are unsure which side is up, try inserting it lightly and see which way fits better.
A good chamfer angle is 20–30 degrees.

Step 3: Adjust the Handle
After removing the katsura, there may be a small step or uneven area.
Trim this area neatly using a chisel, plane, or file.
A recommended method in Japan is called KIGOROSHI.
This means lightly hitting the wood to compress the fibers.
Compressed wood makes it easier to insert the katsura, and later the wood expands again to hold it tightly.
Do not hit too hard.
If you overdo it, the wood fibers will not recover.

Step 4: Reinstall the Katsura
Push the katsura onto the handle by hand as far as you can.
Then tap it in evenly with a wooden mallet.
Do not hit it directly with metal.
The ideal position is about 2 mm from the end of the handle.
If the handle sticks out too much, it will become soft over time and reduce the chisel’s performance.

Step 5: Adjust the End of the Handle
Tap the end of the handle little by little while rotating it.
This spreads the corners outward.
It is fine as long as the crushed corners overlap the katsura.

■Blade width:

3mm

Item no. 1110979

6mm

Item no. 1110980

9mm

Item no.  1110981

12mm

Item no.  1110982

15mm

Item no.  1110983

18mm

Item no. 1110984

21mm

Item no. 1110985

24mm

Item no.  1110986

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