Waxing carbon steel for corrosion resistance

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While oil is the classic rust blocker for knives and firearms, wax is a classic choice that has the advantage of being a solid at room temperature so it will not evaporate, migrate or stain. Some waxes help lube, others form better barriers.

You really have two choices for application:

Waxes that come diluted with a carrier are in a liquid or paste form and applied much like shoe polish - rub on metal, let harden and polish to remove excess. Their initial consistency allows them to flow into the tiny scratches the cover even a polished steel surface. "Renaissance Wax" is a brand name micro crystalline wax use in museums to protect historic and art metal work. Many owners of fine firearms buy it, too, as it is said to offer the best protection of any wax.
2011_0210_pol009.jpg

For those on the cheap, Johnson paste wax applies and buffs in a similar way. It dries to a smooth finish that is hard to tell from bare steel:
ar129859825794422.jpg


Otherwise, basic block waxes can be applied using heat. A classic dark finish used in blacksmith iron working is beeswax that is essentially burned onto fairly hot steel to form a resinous coating, but I'm talking about lower temp uses:

The simplest way to get wax to flow evenly onto a blade is to heat the blade above the melting point of the wax with a hair dryer or the like. Paraffin wax melts at 113 degrees, so you can get a very light and even coating by rubbing the warmed blade with a cold block like buttering a pan. Follow it with a rag to remove the excess, then buff when cool.

Another way to do a variety of goods is with a pan of melted paraffin that you immerse the object in and then let it run off. Very hot wax becomes a very thin oil and will not clump like candle wax. This method used to be popular for lubricating bicycle chains because the final product was so clean and quiet. It is also used to make traditional leathercraft items that need to be waterproof and hold a shape. Overkill for a single blade, but an instructive method.


I don't know about some of you, but I try to avoid any chemicals in my diet, so I don't use paraffin, gun oil or grease around food. The FDA says it's okay, but they approve parabens and other poisons for humans, so I really don't trust their opinion of petroleums in food. This is where natural beeswax may be of interest. Again, a little goes a long way, so a light coating on warm metal should give good protection. Beeswax is slightly sticky - enough to increase its tack. Whether that surface is going to actually impede cutting is an argument for a materials scientist - but I sincerely doubt a bare steel blade is going to act any different on wood, meet or vegetables because of beeswax. Beeswax is not as chemically stable as paraffin, so it is something you'd need to screw around with more often.


It has been argued that dry wax can be polished into cold steel enough to protect it, but that process is haphazard. The dry wax does not coat evenly enough to get into everywhere before the polishing can warm it. If the point is to protect 1095 Cro Van and other non-stainless steels, you want to get the wax to coat as evenly as oil. On my stripped Beckers, I tend to use a good coat of wax under the handles, and sometimes on the blades themselves. I don't normally use field knives for food prep, but wouldn't be concerned about what kind of blade wax I used if I was actually surviving.

Thanks.
 
Hey RX....

I have been using Johnson's wax in the yellow can for decades on saw tables, the drill press, etc...... Blades too......

I use a heat gun on low setting after applying the wax to get maximum penetration....... Jus about the same method you use..... I keep a tall coffee can full of parrafin around to dip everything from leather stack handles on knives to chunks of cardboard for fire lighters....... Be sure to use a water bath and a no flame source to heat the parrafin ........

Thanks for a very informative post.......

Ethan
 
Carnauba wax would also be a great, slick, anti-corrosive as well as being 100% food safe and hypo-allergenic.

Or, just grab some wax lips, a lighter and your Becker.....and kiss corrosion goodbye ;).
 
I thought you were using furniture polish like you said to do in another post. The Renaissance wax is derived from petroleum, and is a form of paraffin. Difference is it has smaller non-straight molecular structure, which leads to smaller crystals, which leads to a dencer, more tacky feel. The Johnson paste wax contains microcrystalline wax, carnauba wax, paraffin, and deodorized naptha which is white mineral spirits as the solvent. So, it looks like you're getting petroleum weather you like it, or not. I think I'll steer clear of mineral spirits. Plus, a block of paraffin is really easy to find, and even easier to carry around. Thanks for all the info.
 
I have a block of straight carnauba wax (I don't think there's anything else in it) from Woodcraft. I've used it on steel with good results. No petroleum - straight from the palms. Hard as hell, tho, so it needs friction from the buffer or heat to get a good coating.
 
I thought you were using furniture polish like you said to do in another post. The Renaissance wax is derived from petroleum, and is a form of paraffin. Difference is it has smaller non-straight molecular structure, which leads to smaller crystals, which leads to a dencer, more tacky feel. The Johnson paste wax contains microcrystalline wax, carnauba wax, paraffin, and deodorized naptha which is white mineral spirits as the solvent. So, it looks like you're getting petroleum weather you like it, or not. I think I'll steer clear of mineral spirits. Plus, a block of paraffin is really easy to find, and even easier to carry around. Thanks for all the info.
You're not reading my posts correctly.

I talked about a variety of petroleum based waxes - including Johnson's Paste Wax for furniture and flooring, then I talked about beeswax for food uses when you want to avoid petroleum. I thought I made this difference very clear with the last line. Nothing wrong with petroleum, unless you are planning to use it on food.


Ethan, thanks. Granite, great information on carnauba. I didn't know much about it, so I appreciate the info. I use beeswax when forging and sheathmaking so I haven't had reason to look around at other natural waxes.
 
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I did read it correctly, actually. I was only going by your strongest recommendations based on your opinion of "better" wax alternatives to pure paraffin. Beeswax is food safe, as well, but as I have found through experience it is too sticky, and liquifies too easily for the results that I suggested paraffin for. If you don't trust paraffin for food safety, that's fine although many people do. Also, if you don't think polishing wax on cold steel is enough try holding wax in your bare hand, and rubbing it with your fingers. It quickly melts due to the friction, and coats your skin. Enough heat to melt the wax into crevices can be generated by polishing. I know this, because I've been doing it. I'd like to ask what your qualifications are to suggest that it doesn't. I've already told you that I have a strong background in chemistry. Do you actually use any of this? Just curious. I know you've mentioned that you just use furniture polish. I'll read your response, but I won't be replying to you anymore. I don't like this type of interaction on forums.

And, Granite... I'm interested in carnauba wax. I have absolutely no experience with it, though. Do you mind posting a picture of the label on your wax if you still have it? I'd like to look into that particular product.
 
I've recently been using Howard's Butcher Block Treatment, which is carnuba and beeswaxes in a light food-grade mineral oil. No nasty solvents. Works well on the shop tools too, so far.
 
I did read it correctly, actually. I was only going by your strongest recommendations based on your opinion of "better" wax alternatives to pure paraffin. Beeswax is food safe, as well, but as I have found through experience it is too sticky, and liquifies too easily for the results that I suggested paraffin for. If you don't trust paraffin for food safety, that's fine although many people do. Also, if you don't think polishing wax on cold steel is enough try holding wax in your bare hand, and rubbing it with your fingers. It quickly melts due to the friction, and coats your skin. Enough heat to melt the wax into crevices can be generated by polishing. I know this, because I've been doing it. I'd like to ask what your qualifications are to suggest that it doesn't. I've already told you that I have a strong background in chemistry. Do you actually use any of this? Just curious. I know you've mentioned that you just use furniture polish. I'll read your response, but I won't be replying to you anymore. I don't like this type of interaction on forums.

And, Granite... I'm interested in carnauba wax. I have absolutely no experience with it, though. Do you mind posting a picture of the label on your wax if you still have it? I'd like to look into that particular product.

No, you didn't. I know what is and isn't natural wax, and all my statements about RW and Johnson's were written knowing what they are. You seem to be confused that I am saying that there is a difference between something being "non toxic", like petroleums and Froglube, and something I would choose to put on food prep items for everyday use. My other recommendation was to use something other than room temperature wax if you want to protect, instead of just lubricate.

I don't understand why you are comparing oily, 98 degree skin to dry, cold metal in terms of its ability to melt wax evenly. Is this part of your chemistry background?

I reject your assertion that hard dry wax will evenly coat metal as well as softened waxes because NO ONE uses hard dry wax to coat, polish or protect. Shoe polish, car wax, furniture, leather, metal protectents all use something to insure even coating and penetration into pores. If all those people are wrong, please post your microscope images that demonstrate how you know better.

Dry wax is commonly used to change the tackiness of a variety of products where protecting the substrate isn't important - cutting tools, skis, surfboards, etc. Not protectents, which is what this thread is about.
 
Sno-Seal? Works wonders on leather as well.

Sno Seal is supposed to be beeswax in a carrier - probably petroleum. I've never used it on metal, and my only thought is that some of the ingredients may be designed to prevent full hardening so the leather remains supple.

At the end of the day, anything completely coating your carbon steel blade is better than nothing. What you choose should be based on what properties you're looking for outside protection - food safety, lubrication, ease of application, etc.
 
No, you didn't. I know what is and isn't natural wax, and all my statements about RW and Johnson's were written knowing what they are. You seem to be confused that I am saying that there is a difference between something being "non toxic", like petroleums and Froglube, and something I would choose to put on food prep items for everyday use. My other recommendation was to use something other than room temperature wax if you want to protect, instead of just lubricate.

I don't understand why you are comparing oily, 98 degree skin to dry, cold metal in terms of its ability to melt wax evenly. Is this part of your chemistry background?

I reject your assertion that hard dry wax will evenly coat metal as well as softened waxes because NO ONE uses hard dry wax to coat, polish or protect. Shoe polish, car wax, furniture, leather, metal protectents all use something to insure even coating and penetration into pores. If all those people are wrong, please post your microscope images that demonstrate how you know better.

Dry wax is commonly used to change the tackiness of a variety of products where protecting the substrate isn't important - cutting tools, skis, surfboards, etc. Not protectents, which is what this thread is about.

I know I said I wouldn't respond anymore, but now your trying to make me sound stupid.

HEAT FROM FRICTION IS A CONCEPT I THOUGHT YOU COULD UNDERSTAND

The steel does NOT have to be heated. Your 98.7 degree finger with added heat from friction is more than enough to melt an extremely thin layer of wax (that's some physics, and some chemistry at the same time). STEEL DOES NOT HAVE PORES. Scratches, pocks, dimples on the SURFACE sure, but these are in no way the same at a pore. A pore will take something into a substrate. On an ORGANIC substrate that actually has pores like leather, I agree that a paste, or oil is best. Stop comparing things that are in no way the same such as shoe polish, and car wax. Instead compare shoe polish to leather conditioner, and car wax to floor wax. All of which are used for different purposes completely different from STEEL PRESERVATION. Car wax is a liquid used for polishing to an extreme shine, and a liquid suites this purpose because a solid would defeat that purpose. And don't say it's for protection. The only thing being polished on a car is the clear coat to keep it clear. Floor wax is even more different.

And for the last time on food prep... Now you've lost me. I'm not sure what you're trying to say. Differences in non-toxics vs. something else you use... I'm lost on that one. As I've said before you've missed the point of dry application completely. You've failed again to tell your qualifications for your assumptions, and giving actual experience with doing any of this. Again all you've mentioned using is furniture polish. And this thread is unoriginal and a high-jacking attempt at making yourself sound better, and more correct than my original thread. Which was a very simple suggestion of WHAT WORKS FOR ME, and I thought I'd share with others. Forgive me for not using Google images for microscopic pics like you did of wax products you probably don't have, or use.

Now I actually feel low. Thanks for that.
 
In leatherwork it is common to melt beeswax with rosin to create a wax (half and half). The wax is more pliable because of the rosin. Alternatively you can use neatsfoot inplace of rosin for a softer version. Most will try to avoid petroleum jelly because it does nothing to protect the leather but rather hurt the leather.
 
I know I said I wouldn't respond anymore, but now your trying to make me sound stupid.

HEAT FROM FRICTION IS A CONCEPT I THOUGHT YOU COULD UNDERSTAND

The steel does NOT have to be heated. Your 98.7 degree finger with added heat from friction is more than enough to melt an extremely thin layer of wax (that's some physics, and some chemistry at the same time). STEEL DOES NOT HAVE PORES. Scratches, pocks, dimples on the SURFACE sure, but these are in no way the same at a pore. A pore will take something into a substrate. On an ORGANIC substrate that actually has pores like leather, I agree that a paste, or oil is best. Stop comparing things that are in no way the same such as shoe polish, and car wax. Instead compare shoe polish to leather conditioner, and car wax to floor wax. All of which are used for different purposes completely different from STEEL PRESERVATION. Car wax is a liquid used for polishing to an extreme shine, and a liquid suites this purpose because a solid would defeat that purpose. And don't say it's for protection. The only thing being polished on a car is the clear coat to keep it clear. Floor wax is even more different.

And for the last time on food prep... Now you've lost me. I'm not sure what you're trying to say. Differences in non-toxics vs. something else you use... I'm lost on that one. As I've said before you've missed the point of dry application completely. You've failed again to tell your qualifications for your assumptions, and giving actual experience with doing any of this. Again all you've mentioned using is furniture polish. And this thread is unoriginal and a high-jacking attempt at making yourself sound better, and more correct than my original thread. Which was a very simple suggestion of WHAT WORKS FOR ME, and I thought I'd share with others. Forgive me for not using Google images for microscopic pics like you did of wax products you probably don't have, or use.

Now I actually feel low. Thanks for that.

Are you calling me a liar? I certainly do use Johnson's and straight paraffin.

I have already said that steel is full of small cracks, scratches and pocks, and have referenced "pores" in terms of all the other materials I mentioned - leather, paint, etc. Regardless, the uneven microsurface of steel is commonly referred to as "porous" by many metal workers as a useful substitute of "cracks, scratches and pocks." If you want to correct everyone who uses the term that way, you'll be correcting smart, experienced craftsmen for the rest of your life.

For you: Toxic - something that is definitely bad for people. Non-toxic - a chemical that is not believed to have immediate negative effects on people. Food safe - chemically neutral or substances that are essentially food. Parafin is non-toxic, beeswax is food safe.

Here's an article about how car wax is a protectent that stops paint oxidation. Wax, on it's own, is not a polish. Polishes, on their own, aren't coatings. Car waxes contain both and do both.
http://www.popularmechanics.com/cars/how-to/repair-questions/do-i-really-need-to-wax-my-car-15829917

You didn't like my thoughts in your thread, and told me to go start my own. Which I did, explaining that this thread is about corrosion resistance rather than lubrication. And now you're pissed that I did exactly as you suggested?

I recommend you take some of your own advice about forum etiquette. You are guilty of making baseless assertions that don't match industry practice, attempting to talk down to me because you have a background with no direct application to your assertions and you're calling me a liar for no reason. Go away.
 
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Might not be my place to say this, but......go easy, my brothers. This is Ethan's house....and it is a happier place if we all keep our egos in check. No one wants to see Bladite wielding the banhammer.
 
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