Jon Posted January 6, 2022 Report Posted January 6, 2022 Lots of pictures I’m going to group them The first are of the blade showing the temper line. Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 The next are close ups of the blade. Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 Now for pictures showing some measurements of the blade. Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 The first picture is the size of the curve at its deepest point mid blade. Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 This is a hagire at very high magnification x12 to x20. Its not visible to the eye at all and is only 1.2 mm long, the temper line at that point is about 6 mm, so if it’s not even a quarter of the temper line, therefore can it be polished out ?. It really only is that long as I’ve magnified so much. Quote
ChrisW Posted January 6, 2022 Report Posted January 6, 2022 Chances are, if there is a hagire, it runs deeper than you can see. However, this is a question best left to be answered by a togishi. If it is not all the way through, I've heard hagire can be polished out.... but it requires a lot of metal to be removed. Sometimes, more than what is economical or practical for the blade. The blade also has quite a few bites already taken out of the cutting edge, so this one might be very expensive to have polished and polish may yet reveal more hagire. 1 Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 Some interesting flaws and damage at high magnification for interest. Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 A nice bit of damage on the back ridge Quote
ChrisW Posted January 6, 2022 Report Posted January 6, 2022 The first one looks to be a fukure (carbon blister/opening), the others are ware (separations in the metal), and that last one appears to be a kirikomi (where another blade has bit into the spine -- a contact mark). This site is wonderful for study of terminology: http://www.japaneseswordindex.com/kizu.htm Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 Last are what remains of the tang file marks. Quote
ChrisW Posted January 6, 2022 Report Posted January 6, 2022 The blade appears to be machi-okure (the habaki has been moved up on the blade) and honestly it looks like someone's grandkids got ahold of the poor thing and treated it like a toy as it has all the characteristic signs of that kind of abuse. 2 Quote
Jon Posted January 6, 2022 Author Report Posted January 6, 2022 Hi Chris it came for a aunt who’s dad was an American soldier in WW11, she spent a lot of time in the states and all over the place, bringing it back with her. It’s been in that condition since and been hanging on a wall, since I inherited it 6 months ago I’ve regularly oiled the blade and will see if one of the better U.K. polishers can give it some love. I know it’s unlikely to be economic but the blade was free so I don’t mind spending a reasonable amount to bring back a bit of its glory and make it a better study piece ( at the moment it’s a study in how not to treat a Japanese sword). 1 Quote
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