Simply Neat: A Little Slice of Life

An educational diagram of a Japanese sword (katana) with labeled parts like hamon, tsuba, and tsuka, and a cross-section showing steel layers (munetetsu, kawatetsu, shintetsu, hatetsu) with corresponding blade types (manu, kobuse, shihozume, etc.). Text explains the function of each part and steel type, such as the hamon indicating strength and the tsuba providing hand protection and aesthetics. The diagram also describes how harder steel forms the edge while softer steel in the center absorbs impacts.

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