GREAT RUST REMOVAL process.

katana · 9th September 2006, 07:18 PM

Hi Bill,
after following the link provided by DD ...there was a concern regarding this method.....

'there is a chance that metal cleaned this way may be subject to hydrogen embrittlement. This can happen in many processes such as electroplating or welding. It should not be a problem unless you are cleaning hardened steel such as saw blades, knives, or chisels. If you are and you intend to use the item (rather than simply displaying it) you may want to try baking the part in an oven, I've heard of using temperatures from 300°F to 440°F (150°C to 225°C) for several hours.'

Apparently hydrogen atoms 'get into' the steel structure and weakens it....
HOWEVER.....there is the possibility that this only occurs when electro-plating.
I have checked several websites regarding this method of rust removal...a 'sword' site and a site that deals with old tool collecting....BOTH state that this is a SAFE method.........bearing in mind that we are talking 'hardened steels in both of these sites.......it seems that 'hydrogen embrittlement' would be either unlikely or of little consequence.....

But I am no metallurgist....

ariel · 9th September 2006, 09:04 PM

In my experience, non-scouring Brillo pads and liberal WD-40 work very well. Bit smelly, but the results are instantaneous and there is no danger of damage to vulnerable parts and no concern about possible interactions with the blade. I suspect the mandau was patinated, and the patina was lost too...
This electrochemical method looks more suitable to semi-industrial uses.
Also, knowing my cats, I am a bit leery of finding one or both of them de-haired

Bill M · 9th September 2006, 10:40 PM

Quote:

Originally Posted by ariel

In my experience, non-scouring Brillo pads and liberal WD-40 work very well. Bit smelly, but the results are instantaneous and there is no danger of damage to vulnerable parts and no concern about possible interactions with the blade. I suspect the mandau was patinated, and the patina was lost too...
This electrochemical method looks more suitable to semi-industrial uses.
Also, knowing my cats, I am a bit leery of finding one or both of them de-haired

Hi Ariel,

I don't like patination on metal. Love it on wood and ivory. I can make a blade look very patinated quite easily.

But I am concerned with metallurgical changes. These blades could house spirits, maybe did at one time. Of course maybe brillo and wd 40 is invasive. the electrochemical process seems less invasive than rubbing or worse yet, a power buffer!

Sheesch, where do you start and end in this arena?

Gonna go check on my mandau blade. Still cooking.

Mare Rosu · 9th September 2006, 11:39 PM

Hi all,
I have used this product,"Evapo-Rust" for rust removal and it worked well for me.
The only caution is that at the air/solution interface line ( where the solution ends and the air starts) will cause an fine etch line

so the answer to that is to submerge the blade totally if possible or keep the solution moving by wiping the solution over the blade.
This is the link to a source for the product, cheapest one that I found, and there are others as well. http://www.theruststore.com/
Read and follow the instructions on the container.
The fine etch line it very light and easy to remove but it is better not to have it there in the first place.

If anyone does use this product get back with us and let us know how you made out. It saved me a lot of work and no I do not have stock in the company,

Gene

drdavid · 10th September 2006, 07:47 AM

Hi,
as mentioned many times before simple things like pineapple juice and some elbow grease work well too. I just had a pedang blade cleaned in this manner followed by ferric chloride treatment to bring up the pattern. Whilst I realise some prefer to leave blades 'as is', in a heavily laminated blade such as this one the skill of the maker and the beauty of the blade might have never been seen again without a clean up like this. There is a before and after of a section of the blade and then a full view of the results.
DrD

Bill M · 10th September 2006, 12:22 PM

i have heard that pineapple juice is a good rust remover and certainly seems in everyday use in Java for that purpose.

How do you prepare it? Do you put pineapple slices in a blender? Buy ready made pienapple juice?

drdavid · 10th September 2006, 12:29 PM

Hi Bill, I believe this was just pineapple juice out of a can.
drd

9th September 2006, 11:39 PM	#4
Mare Rosu Deceased Join Date: Dec 2004 Location: USA, DEEP SOUTH, GEORGIA, Y'all hear? Posts: 121	Chemically removing rust Hi all, I have used this product,"Evapo-Rust" for rust removal and it worked well for me. The only caution is that at the air/solution interface line ( where the solution ends and the air starts) will cause an fine etch line so the answer to that is to submerge the blade totally if possible or keep the solution moving by wiping the solution over the blade. This is the link to a source for the product, cheapest one that I found, and there are others as well. http://www.theruststore.com/ Read and follow the instructions on the container. The fine etch line it very light and easy to remove but it is better not to have it there in the first place. If anyone does use this product get back with us and let us know how you made out. It saved me a lot of work and no I do not have stock in the company, Gene

10th September 2006, 07:47 AM	#5
drdavid Member Join Date: Aug 2005 Location: Australia Posts: 372	pineapple juice Hi, as mentioned many times before simple things like pineapple juice and some elbow grease work well too. I just had a pedang blade cleaned in this manner followed by ferric chloride treatment to bring up the pattern. Whilst I realise some prefer to leave blades 'as is', in a heavily laminated blade such as this one the skill of the maker and the beauty of the blade might have never been seen again without a clean up like this. There is a before and after of a section of the blade and then a full view of the results. DrD Attached Images

9th September 2006, 07:18 PM	#1
katana Member Join Date: Jan 2006 Location: Kent Posts: 2,658	Hi Bill, after following the link provided by DD ...there was a concern regarding this method..... 'there is a chance that metal cleaned this way may be subject to hydrogen embrittlement. This can happen in many processes such as electroplating or welding. It should not be a problem unless you are cleaning hardened steel such as saw blades, knives, or chisels. If you are and you intend to use the item (rather than simply displaying it) you may want to try baking the part in an oven, I've heard of using temperatures from 300°F to 440°F (150°C to 225°C) for several hours.' Apparently hydrogen atoms 'get into' the steel structure and weakens it.... HOWEVER.....there is the possibility that this only occurs when electro-plating. I have checked several websites regarding this method of rust removal...a 'sword' site and a site that deals with old tool collecting....BOTH state that this is a SAFE method.........bearing in mind that we are talking 'hardened steels in both of these sites.......it seems that 'hydrogen embrittlement' would be either unlikely or of little consequence..... But I am no metallurgist....

9th September 2006, 09:04 PM	#2
ariel Member Join Date: Dec 2004 Location: Ann Arbor, MI Posts: 5,503	In my experience, non-scouring Brillo pads and liberal WD-40 work very well. Bit smelly, but the results are instantaneous and there is no danger of damage to vulnerable parts and no concern about possible interactions with the blade. I suspect the mandau was patinated, and the patina was lost too... This electrochemical method looks more suitable to semi-industrial uses. Also, knowing my cats, I am a bit leery of finding one or both of them de-haired

10th September 2006, 12:22 PM	#6
Bill M Member Join Date: Mar 2005 Location: USA Georgia Posts: 1,599	i have heard that pineapple juice is a good rust remover and certainly seems in everyday use in Java for that purpose. How do you prepare it? Do you put pineapple slices in a blender? Buy ready made pienapple juice?

10th September 2006, 12:29 PM	#7
drdavid Member Join Date: Aug 2005 Location: Australia Posts: 372	Hi Bill, I believe this was just pineapple juice out of a can. drd