Collection: Standard Seal Carving Knife (Basic Tenkoku Knife)
An Essential Knife for Carving Seal Stones
In seal engraving (tenkoku), a dedicated knife for carving seal stones is absolutely essential.
This tool is known as the seal knife (intō), sometimes referred to as an “iron pen.”
Just as a brush is indispensable in calligraphy, the seal knife is the core instrument in seal engraving,
directly affecting precision, control, and the final quality of the seal.
At Shoyu Online, we offer carefully selected seal knives suitable for a wide range of skill levels,
from beginners to experienced engravers, all designed for stable handling and confident carving.
For those new to seal engraving, we especially recommend starting with the reliable and easy-to-use
Shoyu Seal Knife.
