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Old 8th March 2007, 04:12 AM   #1
Emanuel
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Hello Ferrylaki,

Maybe you could try passing a bit of lime juice on a spot of the blade to see if it brings out any temper line/hamon. That would at least let you know if you have a sword or not.

Regards,
Emanuel
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Old 8th March 2007, 04:30 AM   #2
ferrylaki
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Quote:
Originally Posted by Manolo
Hello Ferrylaki,

Maybe you could try passing a bit of lime juice on a spot of the blade to see if it brings out any temper line/hamon. That would at least let you know if you have a sword or not.

Regards,
Emanuel
Hai Manolo,
the lime juice, how far can it help identifying the sword. how will it look after I pour the lime juice to its edge? is the iron getting whiter or more contrast between the edge and the upper part? the sword once badly rust , then some one clean the rust using autosol / metal polish....so it made the sword dull...the edge line is still straight in its line and the geometry is difinitely perfect.
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Old 8th March 2007, 05:02 AM   #3
Emanuel
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Hi Ferry,

The citric acid will darken the edge considerably if it's tempered. If you have the differential temper, then it may mean you have a forged Japanese sword. If there is a hamon, then Mr. Mishina may be more interested to examine the sword. If there is no temper line, then it could be the mass-produced WWII kind or a newer piece.

Here is an example from one of my blades.

Emanuel
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Old 8th March 2007, 05:40 AM   #4
ferrylaki
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Quote:
Originally Posted by Manolo
Hi Ferry,

The citric acid will darken the edge considerably if it's tempered. If you have the differential temper, then it may mean you have a forged Japanese sword. If there is a hamon, then Mr. Mishina may be more interested to examine the sword. If there is no temper line, then it could be the mass-produced WWII kind or a newer piece.

Here is an example from one of my blades.

Emanuel
as I know, the mass produced WWII sword also has temper line.
my sword once been cleaned using citric acid, and it remove all the rust.
and at the same time showing some kind of different colour on the edge...left the tiny dots forming a line( like nie ) like this picture. but maybe I should try put some citric acid again, just to make sure...thanks manolo.

regards,
ferry
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Old 8th March 2007, 05:48 AM   #5
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Ahh didn't know the wwii were also tempered...anyway give it a try and see.

All the best,
Emanuel
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Old 8th March 2007, 06:01 AM   #6
ferrylaki
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Quote:
Originally Posted by Manolo
Ahh didn't know the wwii were also tempered...anyway give it a try and see.

All the best,
Emanuel
reading some articles.
WWII swords are oil tempered.
but I dont know the different.
I'll try....
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Old 8th March 2007, 11:08 PM   #7
Battara
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I'm not sure that this is a WWII blade. An oil tempered blade would look frosty at the temper and the pattern is consitent. Oil tempered blades were usually machine made blades and did not even have a hada (grain).

I might try sending it to a US polisher and pay for him to polish a "window", a small section of the blade to see if there is any grain and thus if it is worth a true polish, older or WWII machine made blade.

Another possiblility is to try the nihonto guys over at the Swordforum.com under the Nihon-to section with your pictures.
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