CPM MagnaCut Dual Grit Tutorial | FULL Sharpening Update | Mule Knife Edge Tested On Cedric & Ada
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- čas přidán 10. 03. 2023
- All secrets revealed of my CPM MagnaCut steel sharpening protocol. Learn how I sharpened the Spyderco Mule edge for Pete's test at Cedric & Ada channel which passed through the rope 1550 times. Unleash incredible CPM MagnaCut performance!
In addition to the CPM MagnaCut Tutorial, this video contains a comprehensive Dual Grit Sharpening update and some advanced sharpening theory. Create stellar edges on MagnaCut steel and more.
What's a dual grit edge, you may ask?
Think: high performance aggressive knife edge!!! This brand new method for versatile razor sharp knives is fast, easy, and leads to edge retention increases of up to 50% in some tasks! Watch my tutorials to quickly learn innovative hand sharpening techniques with wet stone, diamond plate, & honing strop.
The dual grit method is a specific method for sharpening one side of the edge coarse and the other fine: • Part 2: Coarse & Smoot...
And the results have been observed by independent testing:
• This wacky sharpening ...
If you're curious about the science behind the edge mechanics, check out this scienceofsharp.com article in which Dr. Todd Simpson analyzes the effect:
scienceofsharp.com/2021/06/15...
Please consider supporting me on Patreon if this helps you,
www.patreon.com/thehomeslice?...
Whether your passion is bushcraft knives, survival blades, hunting & fishing knives, edc knives, or kitchen knives - this method could revolutionize the way you sharpen your knives and make your edge last longer!!!
Music by Jesse K:
/ jessekirkwood
#thehomeslicesharpening #dualgritedge #dualgrittest
Gabe, so appreciate your enthusiasm and willingness to humbly share your insights here with this dual grit edge. All of us knife enthusiasts delight in the nuance and minutiae of getting a better edge, eh? I'm Canadian. ;) I'm writing simply to ask if you might consolidate your insights and process in written form. Perhaps it's already been done on a forum I'm not aware of. Video has its charms but for those of us of a certain age, a well written synopsis is faster and easier to reference. In combination with the video wonderful things can happen but I find myself hankering for something I could just read and re-read as I attempt to gain competence with this method. Soft ask obviously and again, thank-you for all the work you've done and effort for posting and sharing. It's made the world of knives both bigger...smaller and better! ;)
Thank you so much - what a well written and considerate comment! I would be happy to oblige. I honestly feel like I need to do a little bit of steel research and a few more months of carrying the edges that perform well on the rope test before I even know exactly what to recommend.
This edge was a snapshot in time, I have since found steels this sharpening protocol did not work well on, and I have found certain things that work better for certain steels.
My hope is to finish some dual grit testing this year and settle on a few dialled-in edge protocols, each covering a certain genre of steel for which the sharpening protocol brings out the best. I want to make a playlist with a few options and cover the range of available steels. When I do this I will try both to make videos that abbreviate (shorter) and expound (more detailed) for each sharpening protocol, and would be willing to write up a description of the process as well. I just feel like I genuinely don't know what I would want to promote at this stage, at least until the final data comes in.
Hope that makes sense!
@@homeslicesharpening Gabe you are a gentleman and a scholar! I applaud your patience and adherence to a tempered and tested, factual opinion. Heaven knows the knife community is already knee deep in enough speculation and conjecture. ;) I and the rest of the acolytes of the dual grit method will wait patiently for the right time to come. Thank-you for your comment and again for so deftly tending your portion of the knife community garden! Over and out for now.
Cruwear takes a BEAUTIFUL dual grit edge as well!! My CruCarta PM2 is insane with your Edge! I’m glad I watched this video because I was going to put it on my S30V blades but I think I’ll just keep them as is now. My buddy is bringing me his Cruwear Endela this week (he doesn’t have any sharpening gear or the know how so he just brings them to me. 😂) and I’m going to put your sick dual edge on that to blow him away with.
Amazing! I have the Blade HQ CruWear/Micarta PM2, and I'm stoked to experiment with dual grit edges on it!
Thanks for the comment!
Do him a favor and show him how to do it himself. I know it’s nice to be the go-to guy for this or that, but we should all strengthen our friends, as it’s for the betterment of the whole.
@@jackjohnson291 What is your profile picture? Silencer? Looks mesmerizing.
@@homeslicesharpeningI was wondering what that was a picture of as well. My first guess was a suppressor as well but it's weird how the metal surrounding is attached.
Morning sharp make inspiration.
I wish you a very sharp day.
And you as well!
I've been curious about trying this so thankyou for the information and demonstration. 👍
No problem! Hope it works well for you!
I love using mothers mag and aluminum polish for stropping. I’ve been trying out some 2.5 micron Diamond paste recently though
How do you like the Diamond compared to the Mother's Mag?
Great video Gabe, looks like you have got the dual grit method down on Magnacut ........ waiting to see how you go with Vanax
Hey Dan! Thanks so much for the comment. I'm so sorry it's taken so long. I will send you an email today and let you know what's up behind the scenes. Thank you my friend!
tha ks for your time. lookong forward to trying this
Say Hello to Frodo and Sam
Will do mate. Gandalf sends his greetings. He asked me to remind you that he is never late.
Hi Gabe... thanks for that. Straight up, I have learned that I am using way too much pressure in my sharpening. So it's back to the stones for some more practice 🤔
I've been there too Wade! Getting better though - it's amazing how hard it can be to break a habit!
Looking forward to trying this on my Izula in 1095. I love everything about that knife except the very poor edge retention. Very interesting idea, thanks for sharing 👍
Let me know how it goes! I’d be keen to hear!
@@homeslicesharpening I've been freehand sharpening for about 15 years and have a strong bias towards highly polished, hair-whittling edges, so the first thing I noticed was that running the tip of my fingernail perpendicularly across the edge shows a much rougher texture than I am used to. The surprising thing though is that it is hair-popping sharp when I try to shave arm or leg hair. Judging by the coarseness of the edge I would have expected something more like scrape-shaving sharp, so that is definitely interesting. I have a bunch of dirty cardboard to cut up for the burn barrel very soon and if the Izula can get through even half of that with an even slightly aggressive edge I will be very happy.
Awesome @@RichardPoogerman Keep me posted - I'd be very interested to hear.
I just put a 400 Grit CBN edge on my Spyderco Military in M4 for the first time - very similar to what you've described... Chunky texture against a fingernail, yet shaving smoothly. I'm excited to see how the a dual grit edge off a fresh new CBN plate performs.
Your dedication to optimizing angle and grit is really impressive.
I recently caught a Larrin Thomas interview that stopped me in my tracks. He said something to the effect that dialing in your edge angle was almost more important than your steel selection (in terms of durable useful edge lifespan).
I don’t think that he was suggesting that two optimally sharpened knives would not come down to steel selection, but he did seem to suggest that a poor selection of angle with a nice steel could easily lose to an optimized angle with a cheaper steel.
Twisted my noggin a bit to hear this.
Do you have any angle recomendations and a sharpening recomendations for : 2019 Benchmade S30V?
It’s been a frustrating experience thus far.
I have a hard time with Benchmade's S30V to be honest. I have a 940 and I love the design, but struggle to get the edge right. I'm hoping to utilize my rope testing to analyze an optimal sharpening protocol for this steel in particular, but it will take some time.
If I were you, I would either:
-Leave the edge toothy, I'd probably use my Venev FEPA 400 grit OCB Diamond Water Stone, then strop with a good diamond emulsion, you could substitute any quality diamond stone, but if it was an electroplated stone I'd probably finish with gentle edge-leading strokes alternating direction every pass on 600-800 grit, then to strop or
-If you have really fine diamond stones, I have had some good results with high alloy steels (Vanax in this case) doing a dual grit edge about 400grit diamond on one side and very fine on the other, and more stropping than a low-alloy steel (I usually do 15-30 strokes per side) with good diamond emulsion
For now, those are the only 2 protocols I have had some reasonable success with - cheers.
@@homeslicesharpening
What I have read/watched so far on BS30V (pun intended)
1.
A professional knife sharpener on CZcams mentioned that it seems like Benchmade S30V requires the user to take a layer of metal off of the edge to get past some form of residual heat treatment defects on the cutting edge of the blade when delivered from the factory.
This hypothesis was based on the idea that after resetting the bevel and sharpening the blade 3 or 4 times, BS30v seems to have less problems. However, before doing that, it’s likely to see small chips in the edge under light duty.
2.
The steel seems to do better with an edge angle between 35-38deg.
I’ve sharpened spyderco’s S30V really well, but my super fancy Benchmades seem to really disappoint in this department.
Will try your suggested approaches on the sharpening.
Thank you for the write up!
I’m really surprised someone hasn’t covered this issue with the amount of people who have been stuck with BS30V knife steel knives…
Thanks for the information! Cheers bro.
Thats really interesting. How you put that compound on. Never thought to do that.
Applying the compound in a smaller strip? Or the tension-release setup to make sure you can't ruin the edge?
@@homeslicesharpening the smaller strip of compound.
Though the tension release is also a good idea.
Gabe another great instructional video. Your tenderness denim stropping is appreciated, but is it perhaps too tender? I mean after the first cardboard cut the edge is going to be exposed to more stresses. Also I wonder if you have tried a gentle draw through balsa or would this be too rough? I’d think that properly setting up the final dual edge burr for removal is the trick since working back and forth is going to affect both sides. Hope that makes sense. Suggestions not criticism. May your days be sunny and nights clear and cool.
Hey Steven! I'm not sure. I just shot a video experimenting with different stropping substrates. Don't have any Balsa at the moment.
I also experimented with number of strokes. Very interesting. Also need to experiment with different pressures.
This gentle method definitely optimizes for a test like rope cutting better than my old method of stiffer strokes on cardboard with silica & diamond (as the 1550 cuts exemplify).
Does rope cutting not account for impact durability? I have more tests to do, but I think time will tell. Just got a 1000x Microscope to do damage checks - anyway, great question.
In short, big changes coming, and I'll look into it.😁
Just thought of something related to denim strop. I used to make rice bags to microwave for warming pads, filling the denim with rice might be a way to create the strop. It could be adjusted by varying the amt of rice or by rolling the rice in the “bag”.
Have you tried this with Cruwear or Z-wear? Thanks for the toot-torial!
Sorry for the delay, haha! I have some CruWear that I am going to try it on, but have not yet! Will keep y'all posted!
When you substitute the Spyderco ceramic stones for the water stone, I assume its the medium/brown and the fine? Or as you alluded to jump up to extra fine?
I only have the UltraFine - so I would jump on the fine side from the 1000 grit water stone to the Spyderco UltraFine. Otherwise the process is exactly as shown here.
Cheers bro!
Cool stuff but I’m heavily invested in the KME guided system. How do I do the dual grit sharpening with the KME? 250 on both sides then just on one side jump to 600 then “deburr”both sides then 1500 and deburr both sides then strop 1 micron gunny juice on basswood 3 passes then 2 passes the one pass?
Hey David! From what I know right now I think that would work, and I'm not sure exactly how you deburr your edges on KME, but I think you could use both edge trailing and edge leading passes up through the 600 grit. I'd suggest you perhaps switch to really light edge trailing passes at the end with the 250 grit stone on the coarse side and 1500 on the fine.
Do your last stroke on the 1500 side and (when you can no longer feel any burr on either side), hit the Gunny Juice and basswood (I'm actually re-experimenting with stropping in the present, and I think you could do anywhere from 5 to 15 passes each side without removing too much aggression - if you do 15 passes you'll maximize edge stability more, if you do 3-2-1, as you suggested you're likely to maximize aggression more). If you strop it really lightly, I'd recommend realigning the edge on unloaded leather once it loses its initial "bite" as the edge is slightly more prone to bending.
Let me know how it goes - I'd be super interested!
Hey brother, I think basswood strop with a Diamond emulsion would give to a better finished result.
You know, I have recently been playing with basswood and diamond, and I must admit that it did create a much better finished edge - at least on Vanax which I was testing at the time. Thanks Brandon!!!
@@homeslicesharpening your welcome my friend!
Do you always use the angle blocks or do you only use them as demonstration for the video?
Hey Scot! I used angle blocks here primarily to show how I made the specific edge for Pete, though I sometimes will also use them if:
1) I just want to know for sure roughly what edge angle I'm working with for comparison or tuning.
2) I have a super small edge bevel and want to reset myself so as not to accidentally round the edge to a convex (EG in kitchen knives).
I often sharpen my Spyderco Military M4 work knife freehand unguided, but I know it's 14-15 dps and the edge bevel is huge at this point, so I have something to rest against and make sure I don't accidentally lift the angle.
Is it possible to do this on a fixed angle system? And have u tried? Thanks!
Hey there! I believe so, I have heard good things from friends about doing it on fixed angle systems. I think for best results you should focus on edge trailing strokes for the last few stones, and I think alternating from the coarse to the fine sides each pass on your last stone or 2 helps if it's not too cumbersome with your system.
Also I have found that harder, higher carbon steels can endure more stropping than I did in this video and benefit from diamond abrasives in the strop. Cheers!
@@homeslicesharpening OK awesome! Great information and thank you so much for your reply. I have the TSPROF pioneer so switching stones is pretty easy. 👍
Is that.. Pete's wrists slayer grind?! ;x
Oh, poor Pete. I still feel bad.
Good to hear from you Owieczkin! Been a while.
@@homeslicesharpening I'm good, just busy with my job, and hobbies, and sharpening is still one of those ;D
@@Owieczkin Noice.
Will it work with Cruwear?
I have no reason to suspect that it won't! CruWear ought to be a great candidate (I have PM2 in CruWear which I will be testing later on this year - so stay tuned if you want to hear any tips that I discover!)
Cheers.