I stopped carrying it months ago because I noticed the liners corroding.
Here's what it looks like prior to being cleaned up:












The knife was carried fall 2018 to spring 2019.
I'm glad a stainless Police 4 is right around the corner.
Well, as you say people have different preferences, and some of us just enjoy sharpening and the response one gets from tool steels and carbon steels can be very satisfyingladybug93 wrote: ↑Sat Sep 14, 2019 12:19 pmthis is exactly why i don’t understand everyone’s obsession with rusty tool steels. i’m surprised the liners are more rusted than the blade, but maybe it makes sense since you’re using the blade and the liners don’t get wiped down. anyway, when we have lc200n, h1, and others, i don’t understand why they’re not being used more. i know everyone has different preferences, but i would personally feel really ill if i paid this much for a knife and it looked like this.
You dont know that.captnvegtble wrote: ↑Sat Sep 14, 2019 9:37 amI don't understand why the liners would be corroded... they aren't K390.
Spyderco's description of the police 4 in k390 says stainless steel liners.ferider wrote: ↑Sat Sep 14, 2019 1:29 pmYou dont know that.captnvegtble wrote: ↑Sat Sep 14, 2019 9:37 amI don't understand why the liners would be corroded... they aren't K390.
Correct. So not only does Spyderco tell us they're stainless steel liners, but we also know that K390 is a more expensive steel upgrade... so a business wouldn't intentionally use a more expensive corrosion prone steel for handle construction without any benefit.
Yep, that combo definitely will corrode a number of steels.curlyhairedboy wrote: ↑Sat Sep 14, 2019 2:34 pmI think the condensation and evaporation of sweat is a knockout punch on a bunch of stainless steels. You get salt, water, and a bunch of oxygen, cycled over and over and over...
I wonder if it was the blade causing a reaction or if the liners are made of a different material. I've carried a Police 3 year round for years with much less corrosion on the liners, and none IIRC on the back spacer, blade and lock bar.JonLeBlanc wrote: ↑Sat Sep 14, 2019 3:09 pmYep, that combo definitely will corrode a number of steels.curlyhairedboy wrote: ↑Sat Sep 14, 2019 2:34 pmI think the condensation and evaporation of sweat is a knockout punch on a bunch of stainless steels. You get salt, water, and a bunch of oxygen, cycled over and over and over...
I rusted the liners on my Police 3 in VG10, but that took me 3-4 years of year round carry, and the rust was about 30% of what happened with the Police 4. Don't recall any rust on the blade, backspacer or lock bar on the P3.James Y wrote: ↑Sat Sep 14, 2019 6:45 pmIf you have an Endura 4, have the liners rusted in the same manner? I don’t disassemble my knives, but from a cursory check with a flashlight, I haven’t been able to detect any visible rust on my knives’ liners. The new VG-10 Police 4 LW will likely react the same way that an Endura 4 would.
Also, keep in mind that some people’s perspiration is more acidic or corrosive than others’.
Jim
The liners are definitely stainless, not K390 or some type of simple carbon steel.curlyhairedboy wrote: ↑Sat Sep 14, 2019 2:34 pmI think the condensation and evaporation of sweat is a knockout punch on a bunch of stainless steels. You get salt, water, and a bunch of oxygen, cycled over and over and over...
It probably wouldn't hurt to do that. Just be careful not to round over the squared off edges of the liners, or you won't have that nice flush fitting look on the spine.Pancake wrote: ↑Sat Sep 14, 2019 10:54 pmMy Police 4 will hopefuly show up next week, so maybe I take some it apart right away and polish the liners a bit with some 500 and 1000 grit sandpaper.
Maybe a even a light coat of some oil or way would help......I made some coconut-beeswax paste for wood so maybe I try that (dont have any fancy waxes or a special paste).
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