QuotecKc (Kyley Harris) the small sebenza cut much worse even though the edge was effectively similar.. so the overall package is making it feel a bit better. Now I see what you’re saying, that makes sense. A fuller and more secure grip will make the same amount of force used feel like less.by Ryan Nafe - New Knives, and New to You Knives
Yeah cKc, the narrow blades are nice because they turn in cuts easier. It’ll take time to get a decent amount of work done, although I do have a large pile of cardboard to cut up for burning. I’m gonna do the pine carving first as a way to check for hotspots on the handle or the clip, then the cardboard.by Ryan Nafe - New Knives, and New to You Knives
Jason I think I just need to find the pressure level that actually breaks it down. And yeah oil is a good idea considering how non-friable it is.by Ryan Nafe - General Sharpening
QuotecKc (Kyley Harris) the edge is around 0.020" like always. the edge angle is around 18-19dps. it actually cuts reasonably well, so not sure if i will reprofile it or just leave as is and see how it goes. its definately not as good as a thiner knife.. but its mass and solidity adds to its cutting power in cardboards etc. That’s kinda how I look at most decent factory knives with similaby Ryan Nafe - New Knives, and New to You Knives
Quotesal Hi Ryan, Thanx much for the feedback. Beat hell out of it and let us know. I designed that model 20 year ago. Then recently Eric tweaked it. He has a better eye. And we managed to get it into production. I. too prefer larger (4.") blades for daily chores. Hey no problem Sal, it seems like a solid piece and carries very well for its size. I’ll do some cutting and post myby Ryan Nafe - New Knives, and New to You Knives
I think I may have figured out what was happening with the CS-HD 150: It simply doesn’t break down to a significant degree at those PSI levels, so instead of loading with steel like I thought it was, it’s actually just worn abrasive primarily. The abrasive isn’t releasing from the stone, it’s just wearing down. Which is a problem.by Ryan Nafe - General Sharpening
So after I sharpened the Benchmade I also reprofiled and sharpened the Nata and the Cold Steel Drop-Forged Survivalist. I’ll upload a video later tonight of some thoughts on how all that went and how the stones are performing so far. Something I’ll note first is that the Ruby stones are not to my liking so far, the 150 loads with swarf and the 60 simply breaks down too fast and the loose gritby Ryan Nafe - General Sharpening
So with the help of the Edge Pro, I reset the edge profile on this to the following specs: - 15 DPS at 0.020” - 12 DPS at 0.030” The edge was finished on the PC 1200 stone (which clogs even with quite a bit of pressure on the 1095ish steel) and then the apex was rounded over with the strop to increase edge retention in chopping. This should be a big improvement in cutting ability over theby Ryan Nafe - New Knives, and New to You Knives
I’ll do a few other knives this weekend, I’m gonna go pick up some painter’s tape right now. Can’t find my other roll. It’s good for keeping grit out of the action/pivot area of folders, that’s part of why I started with the fixed blade last night.by Ryan Nafe - General Sharpening
Notes on the performance of the two CS-HD stones on the Benchmade S90V: Pressure applied: Only the weight of the stone and the rod it’s attached to. 150: - Bright satin finish (looks like a DMT F or C) - Very minimal wear/grit loss - Only a small amount of abrasive floating around in the water, no thick mud - Doesn’t load at all - No natural burr minimization 400: - Hazyby Ryan Nafe - General Sharpening
One aspect of the Edge Pro that I hadn’t thought of before was the degree to which it highlights the flaws in the factory edge and the primary grind. It’s really interesting. The Benchmade S90V skinning knife has a few inconsistencies in the edge and the primary grind is actually lopsided, one side of the 12 DPS edge is about twice the length of the other, it’s pretty bad.by Ryan Nafe - General Sharpening
Don’t know why I didn’t look this up beforehand, but before I start working with these various stones I’ll post the links to what the manufacturer says about their properties and construction: CS-HD: T2: PC: Ruby: The Spyderco Medium Ceramic is actually a real Spyderco stone and there is branding on the aluminum plate it’s fixed to, so credit is given where it’s due. Theby Ryan Nafe - General Sharpening
I agree, dude. I’ve been thinking of that razor blade I tested. 62 HRC. A company like Spyderco could definitely do it right in terms of HT and geometry, and the knives would be excellent. I think once people realize just how easy it is to get it very sharp and how little damage it takes at low angles, a lot of people would like it.by Ryan Nafe - General
The magnacut steel does possess some interesting properties. Very fine grain and carbide structure, high enough carbide percentage to provide a big increase in wear resistance over something like O1, but it’s still tough enough to take pretty thin geometry and acute angles.by Ryan Nafe - General
Yeah cKc, that razor blade profile you mentioned is what I did to the Chapparal. The edge itself is 15 to 20 DPS freehand and about 0.005” to 0.008” but there’s a wide 10 DPS bevel behind that. Combined with the 2mm blade stock and the full-height and tapered grind, it’s probably the best cutter I have besides an old Opinel.by Ryan Nafe - New Knives, and New to You Knives
Yeah Luis, 0.020” seems to be the average for most Spyderco knives these days. It’s sort of right on the cusp of the durability/cutting ability line. Anything thicker and the cutting ability starts to really fall off in binding materials, and anything less starts to get easy to damage. In this case I think the best remedy in absence of a regrind is to reduce the edge angle to 10 DPS. That’ll putby Ryan Nafe - New Knives, and New to You Knives
Initial experiments using the Benchmade Saddle Mountain gave the following results for the lowest obtainable angles with this particular knife and the flats on the blade resting on the table/platform: - 8.5 DPS with the stock 3mm thick Edge Pro stones - 7.5 DPS with the 6mm Gritomatic/Boride stones That’s plenty low for me, I’m quite happy. For most things I’ll probably just set the edby Ryan Nafe - General Sharpening
The Chief, the Native 5, and the Eagle Ultralight and Classic are all 59.5 to 60 HRC, which should mean that the carbide type and volume are the primary differences in abrasive wear resistance. The hardness is basically the same, so that would have a minimal influence on observable differences. The SPY27 and XHP will have about 35% to 40% more abrasive wear resistance than the AUS-8 in the Al Marby Ryan Nafe - General
The factory edge is 0.019” to 0.021” thick at 14 to 15 DPS. Not bad and not surprising, several other people on YouTube noted that theirs was the same geometry.by Ryan Nafe - New Knives, and New to You Knives
I switched the clip to tip down, as you can see. I prefer that on the larger knives.by Ryan Nafe - New Knives, and New to You Knives
Initial sharpness is excellent, very similar to the finish produced by a Spyderco Fine rod. Could shave your face without much irritation but still does have some aggression on a draw cut, it wasn’t over-buffed.by Ryan Nafe - New Knives, and New to You Knives
So the knife came in today, I’ll probably make a short video comparing it to the Native 5 and the Eagle Ultralight in the next few days. And put up some pictures later tonight.by Ryan Nafe - New Knives, and New to You Knives
Spyderco Native Chief in CTS-XHP: 60 HRCby Ryan Nafe - General
Quotejasonstone20 The only thing I don't like about fixed-angle sharpeners is that it is difficult to get angles that are <10°, which really increases cutting performance. This is one thing I’m a little worried about. I’ll probably end up settling bevels at the lowest setting. There might be ways around this though, such as laying the primary grind on the surface instead of the parallelby Ryan Nafe - General Sharpening
Yeah, I mean they say explicitly “Consider buying Ruby 150, T2 400 and PC 1200. These 3 stones are the best Boride stones for sharpening knives.” So I’m curious to see why they say that, what happens when I use those stones. Also, here’s another quote that shows they actually have some understanding of stone performance, making a very clear distinction between how a stone works with one typeby Ryan Nafe - General Sharpening
QuoteRyan Nafe Yeah I figured that initially I’d just get what they recommended and see how it goes, just experiment. For instance, if one or both of the 1,200 grit stones end up being quite friable and produce a thick mud, they might cover the same purpose as a SuperStone. Or if the 60 grit Ruby stone does what I suspect it will, it might be far better for significant angle changes than a diamby Ryan Nafe - General Sharpening