K390 & Corrosion

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Deadboxhero
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Re: K390 & Corrosion

Postby Deadboxhero » Tue Jan 07, 2020 6:07 pm

For those that are scared to death of rust

EDCi works great.

I use in my shop for carbon knives I make
Since I wet grind knives, My blanks can get rusty when I grind a pile of them and they wait between steps. So, I give em a little coat between stages, does the job great.

I haven't felt the need to use on my Police 4 but it works if I need to.

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JD Spydo
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Re: K390 & Corrosion

Postby JD Spydo » Tue Jan 07, 2020 9:26 pm

TomAiello wrote:
Mon Nov 04, 2019 10:46 pm
I use marine grade Tuff-Glide, applied via their Tuff-Cloth application.
Thanks Tom :) I've been preaching the virtues and advantages of using Sentry Solutions products for almost 10 years now. Just about everything they sell is a great and useful product. I really like their BP-2000 dry lube for many applications as well.

Also I've talked a lot over the years about a FLITZ product that I've just had great results with. FLITZ who is a well known German maker of great metal polishes and other great metal maintenance products. The FLITZ metal wax is a great corrosion protector and has a wide range of viable uses.

But Tom's recommendation of the Marine Grade TUF CLOTH is a really good one. Also I've found products made by Militec to be excellent as well. Very interesting thread.

Sumdumguy
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Re: K390 & Corrosion

Postby Sumdumguy » Wed Jan 08, 2020 6:50 am

I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.

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Pancake
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Re: K390 & Corrosion

Postby Pancake » Wed Jan 08, 2020 7:11 am

Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.
Wait what??? :confused:
Please don't stick your knife into the ground, it will dull your edge in a second.
In the pocket: Chaparral FRN, Native Chief, Police 4 K390, Pacific Salt SE
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Sumdumguy
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Re: K390 & Corrosion

Postby Sumdumguy » Wed Jan 08, 2020 7:30 am

Pancake wrote:
Wed Jan 08, 2020 7:11 am
Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.
Wait what??? :confused:
Please don't stick your knife into the ground, it will dull your edge in a second.
Yea, hence the last sentence of my post. I will be using my Mantra 1 for this test. :p

I'll see how much it messes with the edge. If it is fixable with a few passes on the whites, it's viable(not that I'll use it).

Either way, it's still a piece of information that most people probably don't know. Enjoy the knowledge :D

sok
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Re: K390 & Corrosion

Postby sok » Sat Jan 11, 2020 10:13 pm

Enactive wrote:
Tue Jan 07, 2020 3:04 pm
sok wrote:
Wed Nov 06, 2019 9:36 am
The Mastiff wrote:
Tue Nov 05, 2019 9:11 pm
I do not force patinas and I keep mine rust free. When I get new knives in non stainless I clean them, apply tuff glide and let dry for a day. I wipe everything off then wax the blade with a paste wax. I use Renaissance wax in particular. This pretty much keeps the blade oxygen free so rust will not build up. The wax also micro polishes the blade when applying so it helps clean the blade and really makes it look good. If I scratch or scrape the blade I reapply as needed. If I get salts/blood/acids etc on my knife I wash it off with soap and water and reapply. I also use dry aerosol teflon lubes on the pivot and bearing surfaces. It takes a lot longer to write about it than do it and this care keeps much rustier steel than K390 looking rust free and shiny.

Joe


Hmm, I have always wondered about putting wax on a blade. Whilst I had my new Para 3 K390 apart, I decided to put some Liquid Glass on the blade. None went on the pivot area. I should have about Five coats on before the end of the day.
Sok, I'm curious how the Liquid Glass is working out for you. Do you have any updates to share? Thanks in advance.
No problems whatsoever. I use the Para 3 most every day lately. I was stripping some 6 gauge wire yesterday and some other menial tasks and got some stuff on it that required me to give it a good scrubbing so I could give it a good look. I don’t see a lick of corrosion on it.

I meant to give it equal time with my K390 PM2, that isn’t treated with the Liquid Glass, to see if there would be a difference but I have mostly been carrying the Para 3. I just compared the two and they look the same as far as corrosion or discoloring.

I also treated my Para 3 DLC M4 blade out of curiosity but haven’t carried it much. I like it though, as it keeps the DLC darker and a little glossier.

On the treated blades, I see no signs of flaking or scratches. So far so good.

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David R
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Re: K390 & Corrosion

Postby David R » Sun Jan 12, 2020 12:13 pm

Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.
I can't see how this makes any sense chemically. Maybe he was assuming a place where dirt doesn't hold water (sand) and where it's hot and dry most of the time. I've never seen one piece of metal come out of dirt that wasn't covered in rust. Ever seen buried iron pipes?

I prefer to let my K390 patina. If I see a spot of rust I remove it. My A11 has been more challenging and now gets some Vaseline on it. I suspect it matters less what you use and more that you use something that keeps moisture off the surface.

blendergasket
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Re: K390 & Corrosion

Postby blendergasket » Sun Jan 12, 2020 1:10 pm

Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.

I dug a cat hole with my mora garberg when I forgot my poop shovel camping in the Hoh Rainforest. I can confirm it definitely effects the edge.

Sumdumguy
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Re: K390 & Corrosion

Postby Sumdumguy » Sun Jan 12, 2020 2:00 pm

David R wrote:
Sun Jan 12, 2020 12:13 pm
Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.
I can't see how this makes any sense chemically. Maybe he was assuming a place where dirt doesn't hold water (sand) and where it's hot and dry most of the time. I've never seen one piece of metal come out of dirt that wasn't covered in rust. Ever seen buried iron pipes?

I prefer to let my K390 patina. If I see a spot of rust I remove it. My A11 has been more challenging and now gets some Vaseline on it. I suspect it matters less what you use and more that you use something that keeps moisture off the surface.
This isn't about burying it. It's literally, smack hammer head/claw into dirt and pull out. I do it to all of my hammers, chisels and punches. I can't explain it, I just know that it does infact prevent rust from forming on my tools.(Northern GA soil)

And no, it doesn't play nice with the edge. Although it wasn't hard to return the m4 to it's former sharpness, It's not a vaible method for blades.

Bad for knives, great for hammers and stuff!

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blues
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Re: K390 & Corrosion

Postby blues » Sun Jan 12, 2020 2:07 pm

When I first went camping several decades ago we would scour our pots and pans with dirt to "clean" them with the abrasive in the soil.

The last time I plunged any of my blades into the soil was at the Custer Battlefield in Montana where I was baptizing a couple of blades received from my late friend Rob Simonich, back in 2000 after we had stayed with him during Independence Day weekend.

That sandy soil took the edge right off those knives lickety split.
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araneae
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Re: K390 & Corrosion

Postby araneae » Sun Jan 12, 2020 4:19 pm

Seems pretty unlikely that dirt is offering any lasting protection. More likely a coincidence. Have you bought identical items put one in the dirt and compared it against a non dirt treated item? That I'd be interested in.
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David R
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Re: K390 & Corrosion

Postby David R » Sun Jan 12, 2020 11:21 pm

Sumdumguy wrote:
Sun Jan 12, 2020 2:00 pm
David R wrote:
Sun Jan 12, 2020 12:13 pm
Sumdumguy wrote:
Wed Jan 08, 2020 6:50 am
I'll tell you guys a trick I never thought about for knives. An old guy told this one to my dad way back in the day and he forwarded it on to me at some point long ago.

"If you don't want your tools to rust, stick them in the dirt"
That's it, just push the metal you want to protect into the ground and "VOILA!", no more orange tools.

I use it on my hammers, nailsets and stuff. If they get rusty they can discolor my finish work and that's no fun. I'm going to have to test it out and see if it affects the edge too much to be viable.
I can't see how this makes any sense chemically. Maybe he was assuming a place where dirt doesn't hold water (sand) and where it's hot and dry most of the time. I've never seen one piece of metal come out of dirt that wasn't covered in rust. Ever seen buried iron pipes?

I prefer to let my K390 patina. If I see a spot of rust I remove it. My A11 has been more challenging and now gets some Vaseline on it. I suspect it matters less what you use and more that you use something that keeps moisture off the surface.
This isn't about burying it. It's literally, smack hammer head/claw into dirt and pull out. I do it to all of my hammers, chisels and punches. I can't explain it, I just know that it does infact prevent rust from forming on my tools.(Northern GA soil)

And no, it doesn't play nice with the edge. Although it wasn't hard to return the m4 to it's former sharpness, It's not a vaible method for blades.

Bad for knives, great for hammers and stuff!
Got it. I'm skeptical, but will give it a try.

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Brock O Lee
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Re: K390 & Corrosion

Postby Brock O Lee » Mon Jan 13, 2020 12:34 am

For you folks who have experience of both, which has better corrosion resistance, CPM M4 or K390?
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The Meat man
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Re: K390 & Corrosion

Postby The Meat man » Mon Jan 13, 2020 6:39 am

Brock O Lee wrote:
Mon Jan 13, 2020 12:34 am
For you folks who have experience of both, which has better corrosion resistance, CPM M4 or K390?
I've found them to be pretty similar in that category.
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