DLC K390?

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Skidoosh
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DLC K390?

#1

Post by Skidoosh »

Have their been any K390 knives with DLC? DLC has been incredibly durable and I can't help but think what a K390 knife with DLC would be like.
RazorSharp86
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Re: DLC K390?

#2

Post by RazorSharp86 »

I’m not sure what they use for their PD1 line, but the coated blades make perfect sense with a tool, non-stainless steel.
Although, I have to admit, that a vinegar patina (or even natural patinas) looks real good on k390.
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phaust
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Re: DLC K390?

#3

Post by phaust »

Iirc the only k390 besides the two exclusives are from Japan. There's never been dlc on Japanese manufactured knives. Maybe the exclusives could get a dlc run
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Re: DLC K390?

#4

Post by Jeb »

I actually talked to a guy about coating some of my Police4 K390 blades if I send in the blades, they would bead blast back to white metal, then coat and finish off in the DLC...
150 bucks a blade, so I plan to send one in to him and see how it works out on one first.

I have never been a coated blade kind of guy, but I have 5 or 6 of the Police4 in the Micro Melt PD#1 and it has been very impressive once I get past the Burgundy colored scales lol...

I personally think the PD#1 holds a better edge and longer than my K390 also.
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abbazaba
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Re: DLC K390?

#5

Post by abbazaba »

There's the 10v DLC PM2, but that's the closest we've seen so far.

Image

I'm still hoping we'll see a TiCN K390 run from Seki
viewtopic.php?p=1514055#p1514055

I think they'd look great!

Image
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KeepCalm&Carrion
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Re: DLC K390?

#6

Post by KeepCalm&Carrion »

I'd be really interested in coated K390 and 15v. DLC would be awesome, but I'm also curious about Spyderco's in-the-works proprietary coating. Either way works!
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phaust
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Re: DLC K390?

#7

Post by phaust »

Jeb wrote:
Thu Jan 16, 2025 10:47 pm
I actually talked to a guy about coating some of my Police4 K390 blades if I send in the blades, they would bead blast back to white metal, then coat and finish off in the DLC...
150 bucks a blade, so I plan to send one in to him and see how it works out on one first.

I have never been a coated blade kind of guy, but I have 5 or 6 of the Police4 in the Micro Melt PD#1 and it has been very impressive once I get past the Burgundy colored scales lol...

I personally think the PD#1 holds a better edge and longer than my K390 also.
WOK is much cheaper than that and offers your choice of finish underneath, but there could be some delay because they do it in batches

https://www.wayofknife.com/coating
Soban
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Re: DLC K390?

#8

Post by Soban »

I'm not a fan of the matte texture of spydercos DLC. I would LOVE to see k390 with the TICN coating used on the rex 45 smock though.
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Re: DLC K390?

#9

Post by Flash »

I would have thought out of all the steels in Spyderco line up, K390 would be the single steel most in need of it. - I can patina/rust that steel just by looking at it sideways. 😄

…Instead Magnacut and the other highly-stainless steels gets the protective coating. 🤔
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Re: DLC K390?

#10

Post by vvs »

Soban wrote:
Fri Jan 17, 2025 11:28 am
I'm not a fan of the matte texture of spydercos DLC. I would LOVE to see k390 with the TICN coating used on the rex 45 smock though.
Both matte DLC and TiCN coatings are polishing well. My main user is Endela 20CV TiCN coated w/ then polished coating. It's lookalike Cold Steel previous generation DLC - less traction than original coating and almost no scratches.
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Re: DLC K390?

#11

Post by Jeb »

Flash wrote:
Fri Jan 17, 2025 1:03 pm
I would have thought out of all the steels in Spyderco line up, K390 would be the single steel most in need of it. - I can patina/rust that steel just by looking at it sideways. 😄

…Instead Magnacut and the other highly-stainless steels gets the protective coating. 🤔
Looking at it sideways had me almost laughing, man I know what your saying and feel the same. Really great steel too, just needs a little more science poured on it, which cost way more money and time lol...

Heck I got my K390 Police4 's all laid up in heavy lube right now till I figure out what I am going to do.

Then far as the surface finish, I think I will get mine in polished grade. The guy I talked with said he can do the DLC in whatever finish. I think polished would help keep it cleaner and cut better, least my thinking it would lol.

I know the Micro Melt PD#1's I am using now are more of a Matt finish and they seem to be harder to clean. But this PD#1 is some really serious steel for the money jimo.

I been pitching grass bales today trying to get things for all the animals around here all fixed up for this nasty weather we got pouring toward us this weekend, so guess break time is over and I still have a little more to do fellows.
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Re: DLC K390?

#12

Post by Doc Dan »

Spyderco has their own proprietary coating that should be corrosion resistant in the extreme. I would love to have a K390 Endura with the coating. They even have colors. If they did a coating, and it is as good as they say, I would wonder why I would ever need any other steel (unless I did a lot of diving in salt water).
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gooeytek
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Re: DLC K390?

#13

Post by gooeytek »

Flash wrote:
Fri Jan 17, 2025 1:03 pm
I would have thought out of all the steels in Spyderco line up, K390 would be the single steel most in need of it. - I can patina/rust that steel just by looking at it sideways. 😄

…Instead Magnacut and the other highly-stainless steels gets the protective coating. 🤔
I can't stand coated blades unless they're really done right and needed by the steel. It's the reason why I passed on the Yojimbo 2 with the coated S90V blade. I love S90V but having the DLC turned me off it completely. Didn't make sense.
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Skywalker
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Re: DLC K390?

#14

Post by Skywalker »

vvs wrote:
Fri Jan 17, 2025 2:23 pm
Soban wrote:
Fri Jan 17, 2025 11:28 am
I'm not a fan of the matte texture of spydercos DLC. I would LOVE to see k390 with the TICN coating used on the rex 45 smock though.
Both matte DLC and TiCN coatings are polishing well. My main user is Endela 20CV TiCN coated w/ then polished coating. It's lookalike Cold Steel previous generation DLC - less traction than original coating and almost no scratches.
What process and products do you use to polish TiCN/DLC coatings?
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vvs
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Re: DLC K390?

#15

Post by vvs »

Skywalker wrote:
Tue Jan 21, 2025 6:48 am
vvs wrote:
Fri Jan 17, 2025 2:23 pm
Both matte DLC and TiCN coatings are polishing well. My main user is Endela 20CV TiCN coated w/ then polished coating. It's lookalike Cold Steel previous generation DLC - less traction than original coating and almost no scratches.
What process and products do you use to polish TiCN/DLC coatings?
Leather with SiC paste on the wooden base, usually for stropping. Both matte coatings became glossy with some patience.
I have experience with CS matte DLC (AD10) and with bunch of TiCN-ed endelas.
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Skywalker
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Re: DLC K390?

#16

Post by Skywalker »

vvs wrote:
Tue Jan 21, 2025 12:04 pm
Leather with SiC paste on the wooden base, usually for stropping. Both matte coatings became glossy with some patience.
I have experience with CS matte DLC (AD10) and with bunch of TiCN-ed endelas.
Appreciate it, thanks 👍
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ladybug93
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Re: DLC K390?

#17

Post by ladybug93 »

i've been waiting for the k390 stretch 2 xl to be released. i would love it with ticn.

also still waiting for the blackout se stretch 2 xl salt.
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Brock O Lee
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Re: DLC K390?

#18

Post by Brock O Lee »

I've seen hardness tests that seemed to suggest that the DLC process could cause a slight drop in final blade hardness. DLC is applied at a certain temperature that could temper the blade and reduce the hardness slightly. It probably varies by steel. My understanding is that "high speed steels", which are designed to stay hard at high temperatures, are less afflicted than others.

This is my understanding, but please correct me if I am wrong. Not sure about TiCN, but I assume it also involves heat.

I prefer a harder blade to a slightly softer coated blade. That said, I have not noticed much of a difference in edge retention between coated/uncoated blades, so it is probably not worth to worry about.
Last edited by Brock O Lee on Wed Jan 22, 2025 2:43 pm, edited 1 time in total.
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phaust
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Re: DLC K390?

#19

Post by phaust »

Brock O Lee wrote:
Wed Jan 22, 2025 2:31 pm
I've seen hardness tests that seemed to suggest that the DLC process could cause a slight drop in final blade hardness. DLC is applied at a certain temperature that could temper the blade. It probably varies by steel. My understanding is that "high speed steels", which are designed to stay hard at high temperatures, are less afflicted than others.

This is my understanding, but please correct me if I am wrong. I prefer a harder blade to a slightly softer coated blade.

Not sure about TiCN.
Kunwu said from their testing of their own knives that it does lower hardness but enough under 1hrc so that the range they give doesn't need to change
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