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Edge damage would be MUCH worse if trying to chop this hd staple (equiv to 0.064" dia nail, whereas 16d nail has 0.165" dia)

Here is my unlisted video showing: cutting nail - as an art/trick & de-mystifying its physics.
https://youtu.be/tn6ikoLigwk

Here is somewhat a reasonable chart where PD1 rank among a few other semi & stainless steels. http://cdn.shopify.com/s/files/1/0313/3301/files/Ecommerce_PDFTM_PD_1.pdf?3305" onclick="window.open(this.href);return false; If we are willing to compare pd1 & cfv at a high level base on...

Thanks for good tests, OP! Constructively (for general test, beyond this thread)... Result/outcome is very highly dependence on cutting style/technique. OP shown good techniques, even for incidental impact to 0.1" (12 gauge) wire. If the cut entrance impact (edge velocity+angle) doesn't exceed ...

Arm with a tiny of experience and a whole lot of hot air ;) IMO, Hap40 is an improved version of D2/K110/psf27. Cobalt prevent Cr and Mo carbide precipitation and coarsening in secondary temper temperature range(950F-1075F). This way, it's getting mostly lot of small Vanadium carbides instead, yield...

Cliff, I might have borrowed that analogy from you - can't remember. But I'm sure the bacon bit is original :) edit1: industrial ht is a whole diff ball game. For that kind of liability, I will be taking a perpetual vacation/evasion in the tropic. edit2: RA & cold quench. Take a moment read http...

Usually, I refrain from chime in on a thread where I got mentioned, especially positive kind. Cliff, thanks for your generous assessment of my ht. And respectfully appreciative how informative of your analytically balance & accurate post on ht in general and bulk vs custom ht. Ht, in large produ...

Here is my video of testing some D2/K110 knives at acute sharpening angles - https://youtu.be/sz6OlNKRSWs" onclick="window.open(this.href);return false; All my knives hardness are at least 62rc. So, a reasonably well ht psf27 would supports 8dps and up. Per my response to Lance - under_cut...

Good question Lance. When there are many large carbide (reckon psf27 carbide size around 5-7um) situate along & immediate-near the apex. And when abrasive is not aggressive/hard enough to out-right abrade those carbides, so those carbides resist(push back at abrasive). Consequentially, the thin ...

Also could apexed at 100grit could weaken the edge and got carried forward to finer grit, then the weakened part fall off. Hence in my suggestion above, don't apex at low grit. Or sometime edge is burnt from factory sharpening, so first 1 or 2 sharpening the edge either fall off or low retention. I ...

If you look at high magnification, you probably see that your chosera progression seriously under-cut the apex footing (I call it a 'lip'). This lip is what falling off later on similar to a wire edge. Where a wire edge is just a long thin burr. If you have DMT diamond plates (XX to EE), easy to put...

Catabis, I can see a smile on Cliff's face on solving this easy case. I will jump-in just to pretend to help :p Choice of abrasive type; mode and size are important when sharpen/shaping high alloy knives. You can use almost any combination of AlO/SiC/Diamond/CBN/BN/Ceramic for grit up to 1K. Shapton...

Got it. Will post if I ran into such lit. again - I won't actively looking for them, since I am comfortable with first hand experience. Also in my case, extensive high temp aust cycle, would more than reset/normalize any roll grain and aust grain over and over again. OTOH, there probably many facets...

I've read a few about rolled stringer before tackling carbide refinement for high alloy ingot steels. While your refering to grain mechanical/roll elongation with different work hardness, so on... These rolled grains are very easily abrade by high speed belt/abrasive cutting mostly perpendicular to ...

Visible by regrind, especially with dull or wrong abrasive, where carbide bands wore less than matrix. Banding inherited when metal rolled at the mill. ht tinkerers - multiple high temperature (~2200+F) aust cycle could partially diffuse/break-apart those bands... hahaha doing that wrong will lead t...

IM2CO Carbide roll-grain/banding (ingot rolled into sheet. not to be confuse with microstructure grain) where they became visible when surface is unevenly grounded. Abrasives (belt) will ground matrix material faster/deeper than carbide, this affect amplify by dulled abrasive/belt. Try fresh/sharp 2...

For fast manual metal removal, I grind against ceramic belt staple to a 2x4. I guess, there are quite a bit of binder on those belt too.

Try a glass stone. It could be a useful (or just a pricey 5mm rip-off) sharpening tool in your bag.

I own combination of 8 Glass & Pro stones - from 120 to 16K. Pro is a thicker stone with softer binder and lower abrasive density than Glass. These grits are chunk of hard ceramic particles, while Alumina & others are crystal aggregate. Shapton has tight meshed particle size tolerance (from ...

Shapton Glass stones are very hard - std thickness is 5mm of stone + 5 mm of glass to prevent stone from crack and added some height clearance. Rate of abrasive release is prob around 1/3 of normal hard 1" thick waterstone. It removes metal about 80% as fast as a grand new diamond plate. Once d...

:p darn clear in mind but muddle in writing... ZDP-189 high carbide volume has narrow matrix(much softer than carbide) spacing between hard particles (mostly Cr carbides). Simplified view of surface/edge shaping be combination of - fast to slow - plow to burnish matrix & carbides. Use large low-...

D2 checked-in with a whopping 12.8%Cr. That neutralized my Super Quench but open another door to super fine grain & carbide as long as I keep Chromium carbide from clump/aggregate. I expect zdp-189 good ht to be constraint, yeah a tornado vs D2 wind devil. Yeah, your choice of D2 is an interesti...