in answer
Hi Lee. Pattern is just that a pattern showing on the blade produced from the action of welding the metal together. strips of metal maybe 5 or 6 strips sometimes more each strip of metal having various degrees of carbon .would be heated and hammered together time and time again to produce the blade. At any time during the process if the metal gets to hot or cold the whole process was wreaked and started again using new metal.
what the pattern shows on the blade is the joining lines of these metal strips.
hope that helps explain things a little better. michael
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