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Nihonto Restauration Project:help Getting Rid Of Rust?

wakizashi katana polishing restoration

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#1 dominnimod

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Posted 24 January 2016 - 01:04 AM

Hi,lets say i have a blade in very bad shape,extremely rusted,so my question is:would it be better to leave it like that,or take out the rust by force? I don't care about looks,i could always take it to a polisher someday,but i want to get rid of rust to prevent it from spreading,what do you recommend me to do? How could i start the proccess? Is there any way to remove the rust without ussing abrassive tools? I heard somewhere that wrapping the sword with a cloth with some oil and leaving it rest for a few days will weaken the rust so it could be removed,does that work?

The picture attached is taken from the internet,my blade shape is similar to that one's

Cheers

 

Josh

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#2 Pika007

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Posted 24 January 2016 - 01:26 AM

The only non abrasive non oxidizing agent i know to partially disolve rust is white benzine (that's how it's called locally at least)

but i'm very reluctant using chemicals on anitques like this. You should probably wait for more answers.

 

The best thing would be to send it to someone who knows how to properly take care of it, AKA a togishi. Until then, follow the rust and keep it in a dry and cold place so it doesn't dig down further.


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With respect,

Ofek


#3 raymondsinger

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Posted 24 January 2016 - 02:39 AM

This has been discussed very recently, but a pure copper penny is very effective in removing active corrosion. I usually combine the process with applications of choji oil to soften the rust and uchiko sessions. Eventually, with patience, the rust will come off. This will by no means return the sword to a state of polish however you may see more than expected from its pre-cleanup stare.

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#4 raymondsinger

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Posted 24 January 2016 - 02:46 AM

This is a sword I worked on for a month, which was quite dirty when purchased with large areas of thick black rust.

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#5 nagamaki - Franco

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Posted 24 January 2016 - 02:49 AM

I don't care about looks,i could always take it to a polisher someday,but i want to get rid of rust to prevent it from spreading,what do you recommend me to do?  Is there any way to remove the rust without ussing abrassive tools? 

 

Hello,

 

Never Dull Metal Polish works very well at removing rust and heavy grime as pictured (in my experience), without harming the sword. Note: it's recommended to change wadding frequently using smaller clean pieces and working on small areas at a time, so as not to rub what has been removed back into the blade surface.  Keep the blade well oiled in-between cleanings, changing the oil at least daily.   Then, uchiko can be used once and after the surface is rust/grime free to change the oil. Still, use very light finger pressure so you're not creating (deeper) scratches, change wipes (kleenex) with each wipe, so that, again, you're not rubbing soil/dirt back into the blade surface. (Do not use this uchiko ball on any other sword, other than swords in poor condition/polish).

Keep in mind red rust is active rust and needs to be kept oiled. Pay attention to pitting on the surface (even pin point in size, oil), as they could be hiding corrosion below the surface.

 

Finally, when in doubt don't, seek professional advice.


Edited by nagamaki, 24 January 2016 - 03:13 AM.

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#6 dominnimod

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Posted 24 January 2016 - 11:18 AM

This is a sword I worked on for a month, which was quite dirty when purchased with large areas of thick black rust.

And somehow,the hamon is still there, nice work!


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#7 dominnimod

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Posted 24 January 2016 - 11:33 AM

Hello,

 

Never Dull Metal Polish works very well at removing rust and heavy grime as pictured (in my experience), without harming the sword. Note: it's recommended to change wadding frequently using smaller clean pieces and working on small areas at a time, so as not to rub what has been removed back into the blade surface.  Keep the blade well oiled in-between cleanings, changing the oil at least daily.   Then, uchiko can be used once and after the surface is rust/grime free to change the oil. Still, use very light finger pressure so you're not creating (deeper) scratches, change wipes (kleenex) with each wipe, so that, again, you're not rubbing soil/dirt back into the blade surface. (Do not use this uchiko ball on any other sword, other than swords in poor condition/polish).

Keep in mind red rust is active rust and needs to be kept oiled. Pay attention to pitting on the surface (even pin point in size, oil), as they could be hiding corrosion below the surface.

 

Finally, when in doubt don't, seek professional advice.

Thanks,this is very useful,so,by simply using Never Dull Metal Polish and giving it some time and patience will the rust be removed? What is that thing exactly,im from Spain,any polishing cream works?

 

Josh


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#8 Guido Schiller

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Posted 24 January 2016 - 12:47 PM

... ,im from Spain,...

 

http://www.amazon.es...ords=never dull


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#9 dominnimod

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Posted 24 January 2016 - 01:18 PM

I know it can be shipped, i just don´t wanna buy something to find out that i have the exact same thing but just with a different trademark,that's why i ask what is exactly.


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#10 Jorgensen

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Posted 24 January 2016 - 01:38 PM

Wrap the blade in a cloth soaked with petroleum, put it in a plastic bag (but dont close the bag!) and leave for a some days or a week... it will soften the rust... Wipe of the blade carefully and remove all you can... repeat it again if necessary and/or go further with for example Never Dull Metal Polish or uchiko... It will work well and will, to my experiences, not harm blade. Remember to oil the blade when finished!  


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#11 dominnimod

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Posted 24 January 2016 - 02:09 PM

Wrap the blade in a cloth soaked with petroleum, put it in a plastic bag (but dont close the bag!) and leave for a some days or a week... it will soften the rust... Wipe of the blade carefully and remove all you can... repeat it again if necessary and/or go further with for example Never Dull Metal Polish or uchiko... It will work well and will, to my experiences, not harm blade. Remember to oil the blade when finished!  

With petroleum you mean the jelly like vaseline?


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#12 dominnimod

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Posted 24 January 2016 - 04:21 PM

Another question, will car rust removers like "jenolite" or "naval jelly" damage the blade?


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#13 Gordon Sanders

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Posted 24 January 2016 - 05:32 PM

I am just a newbie here, but from what I know of Naval Jelly.... Keep it far away from swords that you are trying to preserve :-)
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#14 dominnimod

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Posted 24 January 2016 - 05:39 PM

I am just a newbie here, but from what I know of Naval Jelly.... Keep it far away from swords that you are trying to preserve :-)

Ok,thanks for the advice, :P

i will use the metal polishers then

 

Josh


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#15 Gordon Sanders

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Posted 24 January 2016 - 05:41 PM

Just verified via trusty Google (although not the best source). http://www.bladeforu...-jelly-question

These guys on NMB forum will steer You right
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#16 nagamaki - Franco

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Posted 24 January 2016 - 06:35 PM

Best to stick with recommended methods and products, venturing, substituting, you're only asking for trouble.

 

BTW, keep fingers away from the cutting edge. Even rusty nihonto can cut like crazy.


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#17 dominnimod

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Posted 24 January 2016 - 08:43 PM

Best to stick with recommended methods and products, venturing, substituting, you're only asking for trouble.

 

BTW, keep fingers away from the cutting edge. Even rusty nihonto can cut like crazy.

Ok,thanks for your help :)


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#18 dig1982

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Posted 25 January 2016 - 12:00 AM

Raymond can you explain the procedure with the copper penny? Rubbing the blade?
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#19 raymondsinger

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Posted 25 January 2016 - 12:10 AM

Simply use the penny to scrape off the raised and active rust. Focus only on the rust itself and avoid the clear areas.

Best regards,
Ray

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#20 dig1982

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Posted 25 January 2016 - 12:24 AM

Thank you
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#21 Kronos

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Posted 25 January 2016 - 10:11 AM

A fibreglass pen works very well on tsuba if it's not too small (like cleaning a floor with a toothbrush), not sure how it'd compare to a copper penny as with abrasives it's all about getting the softest material that will remove the rust. That way it will minimize any damage to the good steel.


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