Sharpness Defines the Cut

Dong Ju Kang
March 22, 2026
8 min read

Before cutting a mortise, everything begins with the edge.

Sharpening chisels and plane blades isn’t just preparation—it defines the quality of the work that follows.
A dull edge forces pressure, tears the grain, and introduces small inaccuracies.

But when the blade is sharp, the tool moves with the wood.
Cuts become lighter, cleaner, and more controlled.

In mortise work, that difference is everything.
A sharp chisel allows you to follow the layout line precisely, leaving crisp walls and a tight fit for the joint.

It’s a quiet step, but it shapes the entire result.

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Dong Ju Kang
Carpenter and designer

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