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by Chumango
Wed May 09, 2018 11:38 am
Forum: Spyderco General Discussion
Topic: Sharpening high vanadium steels
Replies: 77
Views: 9510

Re: Sharpening high vanadium steels

Again, a refined edge is not the question. The question is whether the potential loss of carbides at the apex makes a difference in performance, not sharpness - how long that refined edge lasts. I am not arguing either way. I am asking the question. Yes, the micrographs show things well beyond what ...
by Chumango
Wed May 09, 2018 11:17 am
Forum: Spyderco General Discussion
Topic: Sharpening high vanadium steels
Replies: 77
Views: 9510

Re: Sharpening high vanadium steels

As I said, draw your own conclusions and balance them against your own experience. The micrographs tell a story, but what is the correct interpretation? How much impact does it have in real life? Real life, I would say ZERO. All of those steels can an will take an edge way beyond the point that any...
by Chumango
Wed May 09, 2018 10:09 am
Forum: Spyderco General Discussion
Topic: Sharpening high vanadium steels
Replies: 77
Views: 9510

Re: Sharpening high vanadium steels

As I said, draw your own conclusions and balance them against your own experience. The micrographs tell a story, but what is the correct interpretation? How much impact does it have in real life?
by Chumango
Wed May 09, 2018 9:35 am
Forum: Spyderco General Discussion
Topic: Sharpening high vanadium steels
Replies: 77
Views: 9510

Re: Sharpening high vanadium steels

It is clear that you can get a sharp edge with many types of abrasive media, but what actually happens to the carbides? Some interesting reading here (with nice photographs). Take it for what it is worth, draw your own conclusions, and balance against your own experience. https://www.bladeforums.com...
by Chumango
Mon May 07, 2018 11:36 am
Forum: Spyderco General Discussion
Topic: Steel that takes the keenest (sharpest) edge?
Replies: 80
Views: 9167

Re: Steel that takes the keenest (sharpest) edge?

Jim, your tests rank results based on number of cuts without explicitly stating whether sharpness as measured by the sharpness tester follows the same order. Is this the case? Or would a ranking by sharpness give a different order? I remember a specific case where Maxamet cut more rope (aggressive e...
by Chumango
Thu May 03, 2018 8:56 pm
Forum: Spyderco General Discussion
Topic: M390
Replies: 78
Views: 9635

Re: M390

Jim Ankerson's tests give the nod to CTS-204P, but with such a small sample size that could be due to the specific heat treat of the knives tested. This was with a coarse edge, so the next question is whether the results would be different with a refined edge. My guess is that if they had the same e...
by Chumango
Thu May 03, 2018 10:47 am
Forum: Spyderco General Discussion
Topic: M390
Replies: 78
Views: 9635

Re: M390

Do you think CPM-20CV or CTS 204P is of lower quality than M390? There may be differences between the three steels but they are very similar. They are all high quality. See N Brian Huegel's post on this page: //forum.spyderco.com/viewtopic.php?t=49823&start=40 My takeaway from this is that all of t...
by Chumango
Wed Apr 04, 2018 3:00 pm
Forum: Spyderco General Discussion
Topic: Maxamet vs CRUWEAR vs S110V
Replies: 38
Views: 10153

Re: Maxamet vs CRUWEAR vs S110V

The marks in the liner are normal. If they weren't there I would suspect it is a counterfeit.
by Chumango
Sat Mar 31, 2018 8:42 pm
Forum: Spyderco General Discussion
Topic: Maxamet vs CRUWEAR vs S110V
Replies: 38
Views: 10153

Re: Maxamet vs CRUWEAR vs S110V

In relative terms:

Toughness Cruwear>M4>S110V>Maxamet

Abrasion resistance S110V~Maxamet (depending on media cut)>M4>Cruwear

Corrosion resistance S110V>>Cruwear>M4>Maxamet
by Chumango
Tue Mar 20, 2018 4:31 pm
Forum: Spyderco General Discussion
Topic: Knife News Report: Nitrogen-based Steels
Replies: 25
Views: 3419

Re: Knife News Report: Nitrogen-based Steels

The only way nitrogen could form an ammonium ion (NH4) is if it corrodes out of the steel matrix. This would mean a limited time benefit as the nitrigen dissolves away, leaving a nitrogen poor surface. If the steel has reduced chromium because the maker determines the nitrogen makes less chromium re...
by Chumango
Sat Mar 17, 2018 8:22 am
Forum: Spyderco General Discussion
Topic: Lets talk about high carbide steels
Replies: 31
Views: 2576

Re: Lets talk about high carbide steels

My use is admittedly light, so the relative benefit of high carbide steels is questionable for me. Add to this the fact that I sharpen early and you could argue I don't need high carbide steels. I haven't seen much difference between steels in how long they keep the sharpness I like. And S110V does ...
by Chumango
Sat Mar 10, 2018 8:50 pm
Forum: Spyderco General Discussion
Topic: Which knife S110V
Replies: 21
Views: 2125

Re: Which knife S110V

I have the N5 LW and Para 3 in S110v. Both are nice - the choice boils down to the attributes that are important to you. The N5 does carry smaller, and actually has a slightly longer usable handle, although the Para 3 fits my hand a tad better. The handle shape is pretty similar if you overlay and c...
by Chumango
Fri Mar 09, 2018 3:57 pm
Forum: Spyderco General Discussion
Topic: S35VN Vs Maxamet on a Para 3, share your thoughts
Replies: 6
Views: 2134

Re: S35VN Vs Maxamet on a Para 3, share your thoughts

Xplorer had it right - Maxamet was intended to bridge the gap between high speed tool steels and tungsten carbide (which is much more brittle than the steels). It is not as tough as most steels used to make knife blades, but I have not heard much of any real life issues with chipping (I don't have a...
by Chumango
Fri Mar 09, 2018 3:44 pm
Forum: Spyderco General Discussion
Topic: Manix 2 s110v fluke?
Replies: 27
Views: 1683

Re: Manix 2 s110v fluke?

Any feedback from Spyderco on the cause? Did they come to any conclusions?
by Chumango
Fri Mar 09, 2018 3:41 pm
Forum: Spyderco General Discussion
Topic: Another S110V question
Replies: 7
Views: 549

Re: Another S110V question

It is not much more time to get reasonably sharp than the ones you mentioned, but to take it to the higher level I like it takes more patience and a light touch. For reference, I freehand sharpen on DMT, and my higher level is not hair whittling sharp.
by Chumango
Sat Feb 24, 2018 1:32 pm
Forum: Spyderco General Discussion
Topic: Sharpening S110V
Replies: 131
Views: 13694

Re: Sharpening S110V

A couple of threads that make you say hmmm...likely the ones ejames was remembering.

https://www.bladeforums.com/threads/s30 ... s.1535385/

https://www.bladeforums.com/threads/can ... t.1519674/
by Chumango
Thu Feb 22, 2018 4:38 pm
Forum: Spyderco General Discussion
Topic: PLEASE HELP I am driving myself crazy with this Sharpmaker situation
Replies: 19
Views: 2581

Re: PLEASE HELP I am driving myself crazy with this Sharpmaker situation

Along with Lance's video, something that may help reduce the chance of rounding the tip is to start with the tip and move toward the heel during the stroke instead of using a draw stroke starting with the heel.
by Chumango
Sat Feb 03, 2018 3:54 pm
Forum: Spyderco General Discussion
Topic: Watch how Bohler Uddeholm makes Powder Steel
Replies: 7
Views: 1214

Re: Watch how Bohler Uddeholm makes Powder Steel

Cool. I always wondered what temperature and pressure they used in the hot isostatic press. That is less pressure than I was expecting Carpenter and Crucible would be similar. They all use their own proprietary improvement of the second generation process. Bohler calls theirs third generation, Carpe...
by Chumango
Sat Feb 03, 2018 6:34 am
Forum: Spyderco General Discussion
Topic: S110V Sharpening Tricks?
Replies: 15
Views: 1891

Re: S110V Sharpening Tricks?

I have long held the opinion (unsupported by actual evidence) that high speed powered sharpening equipment as is used in factories can leave a burr on the edge that remains unless care is taken to remove it. I think this is as likely an explanation, perhaps more likely, than overheating. I just thou...
by Chumango
Fri Feb 02, 2018 6:47 pm
Forum: Spyderco General Discussion
Topic: S110V Sharpening Tricks?
Replies: 15
Views: 1891

Re: S110V Sharpening Tricks?

Started with factory edge. Use it, sharpen it, repeat. I did not do a full re-profile.

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