Deleted
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Post by Deleted on Sept 3, 2011 0:19:41 GMT
I bought a Tenchi about 6 months ago, and its been a joy to cut with. 2 weeks ago, I saw some odd black stuff on my blade. I got help from someone, used some polish, and cleaned them up real pretty-like. It came back though, and I got worried, because I wasn't quite sure what this substance is. I just took it out today though, and its not black anymore, some kind of light tan color. I took some pictures to help with identification. If you guys could identify what they are, and how to fix them, I'd love the support. I love my Tenchi, and want to keep it in excellent condition. On-hand I have some polish, wd-40, 3-in-1 oil, some terry cloth, and paper towels. Its been humid lately, just fyi I guess... Thanks in advance! Attachments:
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Post by omototashito on Sept 3, 2011 15:00:33 GMT
My guess would be it has something to do with the saya itself. Perhaps its the glue iside of the saya touching the blade or it could be there is some moisture in the saya it self. I am not completly certain though. This may sounn like an off the wall qestion but do the areas with the blemishing have a texture to them? or is it just smooth and visually looks bad ?
I hope we can find you a solution for your blade!
Omoto
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Post by Deleted on Sept 3, 2011 15:45:31 GMT
Weird.. it looks like something on the blade, so it wipes off? Or is it a stain?
Just guessing, but I've had sayas with a lot of wax inside that never goes away completely.. One thing I did though was to wrap the last 1/3 of the blade with some strong paper towels and secure it with masking tape, apply some acetone and then used that to 'swab' our the saya. Then let air out for a bit. It did help some. But that's assuming yours is from saya residue.
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Post by Deleted on Sept 3, 2011 19:55:35 GMT
Re: omototashito
the blemishes have no texture to them. I tried scratching a few carefully with a fingernail, couldn't even tell a difference. I'm not sure about the moisture in the saya part.
Re: A_J
it looks like it should wipe off but it doesn't. could be a stain, you say? I'm not familiar with these (my first sword)...
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Post by Deleted on Sept 4, 2011 17:17:31 GMT
Ok, so it doesn't wipe off, that leads me to think something is reacting with the blade steel.. Is it always showing up in the same spot on the blade?
I reread that other post about black gunk on a tenchi, was that you also? Or someone different? You have a different login, so just trying to establish whats been done and known so far.
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Post by Deleted on Sept 4, 2011 17:35:59 GMT
Re A_j: I'm not sanding the blade, so I don't think that its the same thing reported by artelmis. Its not like a recurring problem... I just can't get it off... constant problem? It doesn't appear to be affecting the cut or anything.
the few places this is one are on the cutting edge. Does that help?
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ghost
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Post by ghost on Sept 4, 2011 19:42:31 GMT
Dunno, sounds like you and artelmis have similar problems.
What I think both of you are doing to cause this, is over-oiling the blades before you place them back in their sayas. The extra oil may be creating contact with the saya and causing the wood to re-hydrate to an extent - allowing some mild acid to etch the katana a bit.
Polish out the darkened area again, clean it up, and store/display it out of the saya for a long while. Let the saya dry back out. If you ever store your swords in their sheaths - you gotta air them out every now and then, or make sure to wipe them down properly (after the first oil application come back in 15-30 mins and clean-wipe excess oil).
Hope that helps.
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Post by Deleted on Sept 5, 2011 6:41:10 GMT
I'll try as you say, and I'll post what happens! I appreciate the help.
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Post by Deleted on Sept 10, 2011 14:04:58 GMT
I couldn't polish out the gunk on the blade. but the rest of it looks must better for all that.
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Post by Deleted on Sept 10, 2011 16:55:00 GMT
It wouldn't polish out? Hmm.. that does lead me to think its some kind of deep staining or etching - I may say that its a flaw in the metal, but your original post says it only appeared after you had previously polished out the black staining, which wasn't there at all when you first got it. Are these now tan non-removable stains in the same spot that the black ones were before? This is kind of a head scratcher..
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Post by omototashito on Sept 10, 2011 17:05:18 GMT
Very odd....hmmm
Omoto
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Post by Deleted on Sept 10, 2011 23:20:43 GMT
roughly the same place. I read other posts on what people use to clean their blades, like gasoline or somesuch... that seems kinda drastic. I usually just spray with wd-40 then wipe it down, then put a bit of 3-in-1 oil on a cloth and spread the loved. is there something else I should be doing?
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Deleted
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Post by Deleted on Sept 11, 2011 15:01:32 GMT
Not necessarily - there is always the off chance that the WD40 or the 3 in 1 is doing something funky.. I usually keep it simple - denatured alcohol or acetone to clean, then plain gun oil. Maybe try a regimen like that for a while and see if makes a difference?
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Post by Deleted on Sept 11, 2011 17:44:10 GMT
I suppose I could give that a whirl. What exactly is acetone, and where can I find some?
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Talon
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Post by Talon on Sept 11, 2011 18:27:59 GMT
acetone is an organic solvent,try nail varnish remover (not the acetone free type) ,its cheap and readily available
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