Opening a window on a rusty
Sword
If a sword is badly pitted or stained and a decision needs to be made about polishing the sword, one way to determine if the sword has a Hamone (Temper line) is to open two windows. One at the Boshi (point) and the other at them other end by the Hamachi (Were the cutting edge starts).
A window will help a Polisher decide if a sword can be polished, but other things also should be looked at and only a trained sword polisher can make that determination. Even then their is always a chance that the sword may not polish out properly. So a polisher can help a client come to a decision. The cost to open windows on a sword is minimal. A window is just one more aid to help with the decision of polishing or not.
Email us at nihonto@optonline.net