[TheForge] Re: File making in Japan

[David E. Smucker]

I with Andy,  I think it is highly unlikely that hand made Japanese files 
are case hardened.   The Japanese are noted for their very high carbon, very 
high quality steels used for hand tools, woodworking blades and such.

Dave Smucker
Brasstown, NC
----- Original Message ----- 
From: "A Vida" <osan at netlabs.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, March 18, 2008 8:20 PM
Subject: Re: [TheForge] Re: File making in Japan


> Today's crap files are case-hardened.  Good files are through-hardened in 
> molten lead.  The lead prevents oxidation in the same way salt baths work. 
> I am not certain why lead is used in preference of salts, but I suspect 
> that salt will rapidly attack the extremely fine cutting edges, resulting 
> in a less sharp product.
>
> -Andy
>
> wmullett at bright.net wrote:
>> For some reason, my earlier post didn't get there.
>>
>> I don't believe this is flux.... think carbon - case hardening!
>> ============================================================
>> From: "Peter Hirst" <saltydog335 at aol.com>
>> Date: Tue Mar 18, 11:26 AM
>> To: "Paul Boulay" <pboulay at earthlink.net>, "Sponsored by ABANA" 
>> <theforge at mailman.qth.net>
>> Subject: Re: [TheForge] Re: File making in Japan
>>
>> I assumed that is a flux to preserve the sharpness of  the teeth from 
>> scaling off in the forge.
>>
>> ?
>>
>> Keziah
>>
>> ----- Original Message ----- 
>> From: "Paul Boulay" <pboulay at earthlink.net>
>> To: <theforge at mailman.qth.net>
>> Sent: Tuesday, March 18, 2008 11:47 AM
>> Subject: [TheForge] Re: File making in Japan
>>
>>
>>> Hi folks,
>>>
>>> Ah so, des ne! File making video very interesting.
>>>
>>> But I noticed just prior to quenching the file was dipped in a dark gray 
>>> powder - twice - then it was quenched. Anybody have any idea what this 
>>> was? a sort of flux? or perhaps carbon in some form to promote hardness?
>>>
>>> Regards,
>>> Paul Boulay
>>>
>>> ------------------------------
>>>> From: "Jerry Frost" <akfrosty at mtaonline.net>
>>>> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
>>>> Sent: Monday, March 17, 2008 12:11 AM
>>>> Subject: [TheForge] File making in Japan
>>>>
>>>>
>>>>> http://translate.google.com/translate?u=http%3A%2F%2Fwww.tctv.ne.jp%2Fyasuri-%2Fproduct.html&langpair=ja%7Cen&hl=de&ie=UTF-8
>>>>>
>>>>>
>>>>> Frosty
>>>>> -------------------------------
>>>>> If it ain't forged
>>>>> it ain't real.
>>>>> Wrought iron is.
>>>>> The FrostWorks
>>>>>
>>>>> Meadow Lakes, AK.
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