Crafting a One-of-a-Kind Carbonized Wooden Stool from Antique Jeju Wood

 Hello everyone!

Today, I’m excited to share the step-by-step process of crafting a unique carbonized wooden stool using antique wood (Gojae) sourced right here in Jeju.

By combining the naturally rustic, deep texture of aged wood with the carbonization technique (shou sugi ban), we completed a calm, elegant black stool with a rich character.

1. Marking and Drilling the Seat 

First, using a ruler and chalk, we precisely marked the positions and angles where the legs would be joined on the wooden seat.

After securing the top block with clamps, we drilled the mortise holes for the legs.

2. Shaping the Legs

Using a bandsaw, we split the timber meant for the stool legs to the desired size.

We then mounted the top end of each leg on a wood lathe and carefully turned it with a chisel to form a round tenon that fits into the seat's mortise hole.

3. Joining the Legs to the Seat

We cut a small slot at the tip of each tenon, applied a generous amount of wood glue, and fitted the legs tightly into the seat.

4. Securing with Wedges

To maximize the strength of the joint, we drove wooden wedges into the tenons using a hammer.

Once fully driven, any protruding parts of the wedges and tenons were sawed off flush with the surface.

5. Levelling and Angle Trimming

After standing the stool upright to check its balance, we marked the exact angle on the bottom of each leg where it meets the floor.

Using a saw, we trimmed the leg bottoms along the marked line so the stool sits perfectly flat without any wobbling.

6. The Carbonization Process

Next, using a gas torch, we evenly charred the entire surface of the legs and seat.

Charring the wood not only enhances its durability and moisture resistance, but also gives it that deep, weighty texture and rich tone unique to carbonized timber.

After charring, all residual soot and dust were thoroughly cleaned off with a brush.

7. Oil Finish and Final Touch

We applied a rich coat of finishing oil over the carbonized surface.

Then, using clean towels and an air gun, we wiped away any excess oil to complete the smooth finish.

Completion

Here is the finished stool, showcasing the rugged grain of Jeju antique wood paired with a deep, solid tone!

What makes it even more special is that it was made entirely without metal hardware—relying solely on traditional wedged joinery and the carbonization technique.

We look forward to sharing more woodworking projects that highlight the natural beauty of wood grain in the future.

Thank you for reading!

Click the link below to watch the video!

https://youtube.com/shorts/4oDjHGm-G28