#204519 - 07/09/23 10:59 AM
Knife Sharpening...HELP!
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Knife Enthusiast
Registered: 09/14/05
Posts: 12844
Loc: Central Florida
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I cannot figure any way to "post-in-photos" the process..."BUT"...I can try and explain it. Here goes: When I was runnin' the boats, I would "task myself" with keeping the knives sharp. Old Forschner re-grinds, mostly, they required a very "very" low angle to sharpen. Of course, I cared not what scratches may occur on those blades..."&" that low angle meant a lot more trips to the steel to re-sharpen. RMK's? A totally different story. The bevel is quite "thick", requiring the maintaining of a 16-20 degree angle. Be it steel-or-stone-or ceramic sharpening device, the "angle" is the 1st key in sharpening these RMKs we love so much. NO WRIST movement when sharpening! Steady, continual and in the same motion wins the day. Consider your arm, wrist and hand an extension of the knives, keeping them as one. The steeper the angle (20 degrees for example) the less re-sharpening will be required. This comes at a price in that the actual "cuts"-n-"slices", i.e. are not as "surgical". When filleting fish, etc. a lesser degree of angle will produce the results you are looking for. When we have a "doe" day or "youth" day at the hunting camp, a good many whitetails need processing. The angle is not as critical but still needs to be maintained. Speaking of "maintaining", you must maintain your sharpening devices as well. I use vinegar (white) and hot soap,water and a stiff brush to clean the longitudinal lines on my steel. My big "shop stones" (Nordic, tri hone) requires less but it is wise to wipe and re-oil them every so often. Ceramics: Hot soap and water as well. The "chefs" on TV whip those blades quickly on their steels and make it look effortless. Again, low angle sharpening lends itself to this method of sharpening. "NOT"...for RMK's! Hope this helps, Capt. Chris PS: This upcoming hunting season I'll try and get someone to photograph some of this procedure. I will pin this topic so we can all add, subtract or amend it as time goes on and allows...CCS
Edited by Captain Chris Stanaback (07/09/23 11:34 AM)
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#204522 - 07/09/23 11:11 AM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 06/04/15
Posts: 55
Loc: Washington State, USA
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Thank you Captain I have less than minimum success with my sharpening skills. Craig
Edited by 32Craig (07/09/23 11:12 AM)
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Craig NRA- Life Member since 1981 Retired
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#204525 - 07/09/23 12:06 PM
Re: Knife Sharpening...HELP!
[Re: 32Craig]
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Knife Enthusiast
Registered: 03/20/06
Posts: 1848
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On smaller knives, I get good results using the Spyderco Sharp Maker with its ceramic stones. The two angles they are set for match up with Capt. Chris's recommendations.
Even with the stones held at a consistent angle, it still takes practice to hold the blade at a consistent angle as I draw it down the stones.
The short length of the stones makes it a bit difficult to do longer blades...I run out of stone before the full blade length can be drawn down to the bottom.
I probably need to go back to their video online to watch how they recommend sharpening longer blades.
Larry
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Larry W. Williams RKCC #CM-041 ABKA #046 RKS #1246
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#204531 - 07/09/23 01:26 PM
Re: Knife Sharpening...HELP!
[Re: Windsor]
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Knife Enthusiast
Registered: 02/04/08
Posts: 2840
Loc: Georgia
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I know a good, local knife sharpener....as Dirty Harry would say...."a man has to know his limitations"
:-)Rocky
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Rocky Whitaker RKCC#25
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#204537 - 07/09/23 07:23 PM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 11/04/11
Posts: 327
Loc: WI
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Thanks Capt! Pictures would be great. Hanna on seems to be best for the people I've shared my rudimentary sharpening skills with. Even then there's still a fairly lengthy learning curve involved.
Do you find you need to find the exact angle the knife was sharpened at?? I know that's the goal, but (I know, that's your line Capt) I've found it helpful,especially for newer knife people, to find an angle that is repeatable for the person sharpening. Usually end up reprofiling, to an extent, without getting to carried away but the knives are typically at that point anyways
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Jerry
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#204541 - 07/10/23 10:48 AM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 01/25/10
Posts: 2370
Loc: NY
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Stropman bought at Blade 6 years ago. Hone them all after light touch-up on fine stone with mineral oil.
Tom Flynn
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Tom Flynn NRA Endowment RKS#5918 RKCC-CM-178 SCI Life Member DSC Life Member
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#204543 - 07/10/23 04:48 PM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 09/14/05
Posts: 1804
Loc: The Desert Southwest
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Knife steel
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#204544 - 07/10/23 08:03 PM
Re: Knife Sharpening...HELP!
[Re: Holzinger258]
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Knife Enthusiast
Registered: 09/15/05
Posts: 3955
Loc: Deep East Texas
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Thanks and I will try it on my kitchen knives. I hope all I have to cut afterward is a stick of medium warm butter. There used to be a guy at our local gun shows that would sharpen knives but he is long gone. I would take a bag of knives (not Randalls) at least once a year for him to sharpen. I miss that old man.
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Tom Welch RKS #4868
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#204545 - 07/10/23 08:46 PM
Re: Knife Sharpening...HELP!
[Re: tomthbomb]
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Knife Enthusiast
Registered: 12/01/13
Posts: 454
Loc: Ladue,Missouri
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I use the Spyderco Gauntlet perfect everytime ! I actually used my Model 10-7 so much I took the edge completely off and got it laser sharp with the Gauntlet and a DLT strop with the white and green compound.
Edited by Kirko (07/10/23 08:50 PM)
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#204550 - 07/11/23 04:59 PM
Re: Knife Sharpening...HELP!
[Re: Holzinger258]
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Knife Enthusiast
Registered: 09/14/05
Posts: 1804
Loc: The Desert Southwest
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For my kitchen knives (NOT for Randall Knives!) I use a Chef’sChoice. It works very well, even on my Japanese knives. They are sharp enough to slice tomato so thin that it only has one side! (lol)
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#204555 - 07/11/23 06:59 PM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 09/14/05
Posts: 1804
Loc: The Desert Southwest
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You're right, Captain. Honing with a steel doesn't remove metal, just smooths and straightens it. (maybe if I remove enough steel by power sharpening, I'll have an excuse to buy a new knife!)
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-Steve RKCC CM-066 RKS #258
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#204557 - 07/12/23 06:55 PM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 09/14/05
Posts: 1804
Loc: The Desert Southwest
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One of my steels is even harsher--my Professional Extra Fine Oval Diamond Sharpening Steel may say "Extra Fine," but it DOES remove steel. I don't use it as much now as I used to.
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#204721 - 08/05/23 05:11 AM
Re: Knife Sharpening...HELP!
[Re: Holzinger258]
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Knife Enthusiast
Registered: 09/25/13
Posts: 1146
Loc: the other side of the earth
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Oh, thank you so much Capt Chris for sharing. As for the angle, this is the most important I also like the instruction from Ruana, I added the scanned leaflet to the message. And after sharpening, sometimes a burr or a wire edge remains, here is a good way to remove it from 12.5 minutes https://www.youtube.com/watch?v=8FqUL6slhtA&t=764True, he does not say anything about the constant angle, but it is clear that he observes it I use only stones lately, there are different, artificial abrasives and natural ones. For Randall, my favorites are Crystalon, India from Norton and Craftsman and Sintered Ruby by Gesswein for end sharpening
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#205357 - 09/30/23 05:39 AM
Re: Knife Sharpening...HELP!
[Re: desert.snake]
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Knife Enthusiast
Registered: 09/25/13
Posts: 1146
Loc: the other side of the earth
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Last week I met several cool guys, they make knives and sharpen them at a high level. They showed me an old video. One of their teachers. Unfortunately, he died about 12 years ago, but his notes and some articles have survived. You can include subtitles in the video and their translation into English https://www.youtube.com/watch?v=fdmrMNDL5BwHere he shows how to hold a knife, this position of the right hand helps to maintain a constant sharpening angle, very accurately control the pressure of the knife on the stone, and most importantly, it is suitable for people with sore wrists, for example, the hand is numb due to carpal tunnel syndrome or due to arthritis etc., and also for those who need to sharpen a lot at once Now I'm trying to sharpen it this way. It’s still unusual for the hand, but overall the result is good. The guys also gave me 2 stones - Hindostan and Cretan stone. This time I sharpened #10, first coarse and medium carborundum, then Arkansas and 2 new stones alternately. I wanted to find out the difference between the stones. Cretan turned out to be somewhat rougher than Arkansas. Hindostan turned out to be at the level of Arkansas, but removes metal more quickly. I think from now on I will carry Hindostan with me as a help to Fine India for sharpening when it’s slightly dull. It works well with both water and oil All this took about half an hour, including cleaning and washing the stones. If look under 10X magnifying glass, can see that it is still very far from ideal and in some places there is a very small burr, but in real work more sharpness is not required https://youtu.be/UWxheAxpb14The penultimate photo shows that I did not remove all the dents on the blade, since I don’t see the point in this. I don’t remove large chips, I sharpen them like a serrated tooth. It's a pity to remove a lot of metal from a blade without a serious reason. The last photo shows my folding Böker Slimline. It has suffered from time and rust, a dent has formed, and it has been sharpened like a serrated tooth. Cuts perfectly
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#205363 - 10/02/23 12:02 AM
Re: Knife Sharpening...HELP!
[Re: desert.snake]
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Knife Enthusiast
Registered: 10/14/13
Posts: 776
Loc: Kentucky
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Very interesting. Thanks for the in info.
Dennis
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#205679 - 11/27/23 01:12 PM
Re: Knife Sharpening...HELP!
[Re: spark42]
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Knife Enthusiast
Registered: 11/13/23
Posts: 29
Loc: Texas
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I use flat diamond stones for most of my sharpening. They cut reasonably quickly and stay flat. No oil needed.
You have to remove metal to really re-sharpen. Hones re-shape the edge, but eventually you have to remove some metal. It takes a little practice to get accurate and consistent, but it isn't too hard. Always watch the point, it is easy to round off the point.
The various guided sharpeners make it much easier, but those are not cheap.
Does Randall have a shop specified sharpening angle? Does it vary by knife model. And, if anyone knows and can answer, please say whether you mean an inclusive angle (the angle formed by the two bevels) or an exclusive angle (the angle between the bevel and an imaginery center line).
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#205680 - 11/27/23 04:24 PM
Re: Knife Sharpening...HELP!
[Re: jhe8888]
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Knife Enthusiast
Registered: 04/14/07
Posts: 597
Loc: Suburban Deeeetroit
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I believe the paperwork that comes with a Randall specifies the angle. They recommend 20 degrees. I'd say use a white ceramic rod and the a steel hone rod rather than removing material that the diamond would unless the edge is really poor. Just my $0.02!
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Mike Marshall NRA Life Member RKS# 5598 RKCC# CM-068
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#205682 - 11/28/23 11:48 AM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 01/06/06
Posts: 1371
Loc: IL
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For a long time I used a Norton bench set almost identical to the ones used in the RMK shop, they have a metal base mine is plastic. Nowadays I highly recommend Work Sharp products as they are extremely effective and very reasonable. Many products like the field sharpener are available locally.
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Ben
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#207066 - 06/28/24 10:26 AM
Re: Knife Sharpening...HELP!
[Re: Captain Chris Stanaback]
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Knife Enthusiast
Registered: 09/25/13
Posts: 1146
Loc: the other side of the earth
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A couple of days ago the unexpected happened. About 1.5 weeks ago, a friend gave me a Fox Vulpis pocket knife with M390. I used it and it finally got dull. Moreover, he became dull at a fairly simple task - sharpening a bunch of pencils for a friend's children while I was visiting him. Lol. At first I tried Arkansas, since the dullness was slight - it had the opposite effect, it stopped cutting altogether. I tried a ceramic triangular rod from Lansky - no effect. I went to Norton Crystalon Fine, he sharpened it, but the edge was rough. I switched to Fine India, the results got better, then I switched to Arkansas and again the knife stopped cutting and became very dull. That is, it seems to be sharp, but if you need to cut something like vegetables or meat, then it slides along the surface. An internet search brought me to this site. A guy with an electron microscope sharpens knives and looks at what influences sharpness and subsequent dullness. Perhaps this will be interesting to someone: https://scienceofsharp.com/After reading everything and thinking, I came to the conclusion that this steel is hardened very hard and dull due to the fact that when moving from India to Arkansas, I cannot maintain an even angle and lateral pressure spoils the base of the cutting edge and it falls off already in the process sharpening. As a result, I again came to what the Captain described at the very beginning - need to keep a constant angle Then I took Fine India again, a black marker, so I could see where the metal was being removed, and sharpened the knife, trying to do it with very little pressure. As a result, the knife is very sharp. I don't see the point in switching to smaller stones. If I had a Norton 313 in the first place, I would have saved a lot of time Along the way, I also bought a rather unusual diamond plate; it is made of bronze or brass and the diamond is distributed inside it evenly throughout its entire volume. It sharpens somewhat rougher than India, very similar to Crystalon Fine. Together they are a great couple
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