Being in the Engineering profession myself , I must congratulate you on bringing this to our ( BLKS ) Brotherhood of Lansky Knife Sharpeners' 🔪 attention ! Very simple to understand and well presented... But......I was just wondering if all of this would really matter when we accidently slice our finger down to the bone....?!! But seriously , thankyou for the tutorial which I will definitely use.

I commented and you asked a question. I deleted my comment, because I (after further research) have realized I was talking out my hind end. You have made great points here and I will use this video as reference in the future. Thank you. Good work.

Brilliant. Been using my lansky for a while now to sharpen just about anything that I can. Still very useful even 4 years from when you made it. Thank you!

Best video ever. Congratulations. My third grade trigonometry would be proud of me.

amazing. in a world of youtube sets and purple neon lights, I appreciate greatly this era of instruction through youtube, thank you

Thanks a lot, you are great!!! Some mesurements if you want a precise angle (using yor Lansky system measurements): For a blade of 0.100" you can put the blade 0.781" from the holder and using the 25° hole you will obtain a 20° angle, and a 25° angle can be obtained at a distance of 0.513" by using the 30° hole. For a blade of 0.125", 20°, distance 0.815" using the 25° hole, and 25°, 0.540" using the 30° hole. 😉

You read my mind, only 11 years before i tought about this!😂 Excellent video.

Just bought a Lansky kit and have been tweaking it up. This is exactly what I needed. Thanks.

Wow, this was just the video I was looking for regarding the Lansky. Most videos do not even come close to explaining this just as you did. Thank you so much, I will be saving this video for future reference.

You must be an engineer! Great video, nice job explaining, thanks!

You just helped Lansky sell another unit! Thank you very very much for posting this analysis!

I'm jealous of your old lansky. Looks like it will literally last forever.

Really good video! I actually haven't used my Lansky in a long time because I was having a problem getting consistent results. I don't remember the exact number but in the directions for the one I have it gives you the distance you are supposed to have for how much of the knife blade you are supposed to leave sticking out from the edge of the clamp. I use a ruler to make sure each knife is sticking out the same distance but I wasn't taking in account the knife thickness so now I see my angles were being affected. Thank you.

Wonderfully detailed video! I really appreciate your spending the time. This will allow me to better use my Lansky system.

This was a ton of useful information, thank you for taking the time to make this video.

Thanks for doing all the hard work... Is this very indepth...

I ordered a digital angle meter to assist in this process. I do look forward to testing it against the math. Excellent method of operation and presentation. Great video, thanks

an excellent instructional video. Practical metrology! Well done

Great effort, a clear point of view, good results

Wonderfully detailed video! Bravo!

Thank you for sharing this information. It’s been a great help. Top$

Yeah, but your supposed to have the edge half an inch from the end of the clamp.

Hi Tony, First of all, you are correct. The angles marked on the clamp are way off. I did my own experiment with an angle cube and also verified it with the clinometer app on my phone .I used a gerber air ranger knife protruding out 5/8" from the end of the clamp. My results were very, very close to yours I was very anal in making sure everything was zeroed out, clamping halves parallel and made sure the stone rods were straight as could be. It amazes me that Lansky marked the angles on their clamp like they do. Whether you sharpen resting the rod on the top or bottom of the hole only makes 1/2 degree difference. I have several different knife sharpening systems and knowing the " True" angles of the Lansky clamp is a big help. Thanks for bringing this to my attention.

Thanks for your time and effort in this video. It is very informative.

what a find! thank you so very much...blessings

Thanks for the excellent video Sir! Very useful.

wow very cool! i knew the 17 degree angle seemed very acute. good to know! Definitely will change how i decide which hole to pick. thank you

I had just bought a lansky and upon further inspection I realized what your mentioning about the angles and so forth, then I ran into this video and a laughed at the coincidence. Good video, unfortunate to see some of the low IQ comments.

Very very good job, man!!! Thank you!

Thank you for all your knowledge

I'm from Enumclaw Washington great video

Thank you, very interesting !

Sine, cosine and tangent.. super basic math people! I use it daily for a myriad of uses, this being one of them. Great video sir.

the best and accute video about check the angle on a knife sharpener. good job!

Thanks for the video and good info

Thank you very much for the info👍

Good work!

Enjoyed your video I had to listen between the lines but I got it thanks.

Nice catch!

this guy is a perfect example of where the term over engineered comes from

Great video!! thx. im subscribed

Very great job! thanks a lot for that. my best regards

Excellent video, really helps in understanding how to setup the Lansky. I haven't read all the comments, but when measuring the distance to the rod hole wouldn't it be more accurate to measure to the top of the hole, less the thickness of the rod? When you put pressure on the stone when sharpening wouldn't the rod be forced to the top of the hole? Thank you for this video, best video on the Lansky I have seen.

Very good. I have their LKC03 kit and had the same issues. Following their directions, leaving a 1/2" of the blade exposed from the edge of the clamp, the angles are all wrong. They seriously need to revisit the machining and enclosed literature.

final honing questions. if you clamp the rod to the stone by putting both on a table so the edge of the stone and bottom of the rod are matched, then put in a 1500 or 3000 stone, but had the rod extend down a bit, the stone angle would favor the edge, so the honing with the highest grades would favor the cutting edge more than the fill side of the grind. I find I spend more time honing the whole face much more because of how slow the really high number stones are.

Great video which verifies my concerns after just buying the Lansky Deluxe 5 stone system which I'll be using to sharpen kitchen and outdoors knives. The angles will change across any blade with angle change proportional to blade length. Assuming the Lansky is centred in the middle of the blade, the centre of the blade will be most obtuse and the base/tip will be most acute. This makes the tip and base of the blades sharper but more susceptible to chipping. Some examples For a 3" blade with the blade distance 4" from the Lansky and using the 20 hole, the angle in the middle will be 17.74 degrees. At the base and tip, the distance from the Lansky changes to 4.27", making the angle around 16.81 degrees. This isn't a massive difference. However, the same calculations for a standard 6" chefs knife (same hole, blade thickness and blade distance) the blade/tip angles change to around 14 degrees. I've considred the following options: 1) Change Lansky hole as you go up the blade, meaning a stepped sharpen (not a good plan) 2) Move the Lansky up the blade as you sharpen - meaning a variable wavy (but more consistent) angle all the way up the blade 3) Modify the Lansky to laterally extend the holes to the same length as the blade), allowing the hone to maintain angle all the way up the blade. I realise I'm getting seriously OCD on this, but I'd really welcome comments

The exact angle is not really important. The important part when sharpening a knife is CONSISTENCY. The lansky is very good at sharpening with a consistent angle.

According to Lansky, the blade edge should be 5/8 of an inch from the edge of the holder.

Great video. Just one question. Does how you hold the rod at the L bracket, ie pushed up to the top or push down change the angle much. There is some slop in the unit. I ordered the system and it’s sitting at the post office, so I haven’t been able to check into it

i liked the vid. Should of stayed awake in math class lol. But seems easy enough. I think ill get the work sharp

Very interesting video! Thank you for sharing it. I have a question. Can you wet these stones with water? haven't bought it yet

4:00 FALSE INFORMATION - I am not having a go at the author but I think it's really important to point out that this information here about the honing angle changing is false. The angle between the stone and the bottom length changes BUT the actual HONING ANGLE does not change.

Brilliant video. Cleared up a lot of confusion. And here I thought 17° was actually 17° . Thank you. What kind of clamp is that?

Hone angle will change at the tip as distance changes.

Lansky states to use the TOP of the hole for use. That would make your measurement closer to Lansky's index.

i like using a marker on the blade and adjusting tool until it takes the mark off. So easy and I can change angle of edge if I don't like it. Good vid though.

hi from england, thank you for the information. i have one of these and i knew it was way off.

I wonder when they started making all of the stuff in China? Also, I don't find anything about a warranty. Other then those two items I'm enjoying my kit. Thank for the video.

Well done :)

Wow too much info 👍

Good job with the video but that Sebenza is nice love my large #21

VERY INFORMATIVE VIDEO! THANKS!!

¡Master!

U sound like math teacher. 😂Cool usefull vid

When using the Lanskey system I put my finger behind the slot where the guide ride goes through so the rod rides at the top of slot not the bottom, this gives it a few more degrees i'm guessing. Your demo shows the guide rod riding on the bottom of the slot. Can you see that would make it closer to what the actual degree marks say they are.

I understand being accurate in everything, but for me angle doesn't matter as much as long as I use the lansky system and proper placement of my blade every time for repeated accuracy

4:00 This is actually FALSE. As you move from side to side, the blade is no longer parallel ie the blade is straight. IF you moved the fulcrum up to that portion of the blade, the sharpening angle will be exactly the same. IE, IF the blade angle was at a greater distance and stilll normal (perpendicular) to the fulcrum, the honing angle would change BUT the blade is straight and the angle of interest is the honing angle NOT the angle between the bottom distance and the stone.

for 12 inch knife i prefer a 25 to 30 degree. a 10 inch i prefer 20 to 17 . i use a very flexible 6 inch boning and prefer around 10

A lot of the measurements in the section around 5 minutes aren't set with the handle touching the top of the hole. If you adjust this you'd arrive at 17, no?

Any idea why one edge of a knife blade is 17 deg and the other side of the same knife blade is 30? I have a few different knives where the angles are not the same

Lol interesting but I've had no problems producing a very sharp edge using the lansky it took a few minutes to get used to it but it's a great cheap system that produces razor sharp edge with no hassle this is all great info but seems over done. I just hit the 20 degrees slot which is probably closer to 17 and get a consistent hair popping sharp edge with minimal effort . Granted I'm not sharpening a sebenza lol I don't know that I could bring myself to put such a nice blade in that bit it does great for my manix 2 and benchmades as well as other cheapos.

But how would you compensate for the distance lost in the removement of material?

Great geometry class ... but the guides flop around inside the holes, thereby altering the angle ... And does it really matter .002 degrees when preparing to cut the cheese ?

I have just ordered a Lansky system kit and will be going through every knife I possess over the coming weeks. I think I am going to have to re-establish the edge of every one of these knives as I have never used a consistent system of sharpening, and some of my camping knives are a bit beaten up. What I will need to do is to determine what is going to be the ideal angle to sharpen each knife to. Some video tutorials just recommend a uniform angle and approach and claim that this works well. Others, like this one, go into high detail. Any suggestions would be welcome. For the record, I am not super technical by nature, all I want is a consistent and effective sharpening system that will keep my knives sharp and tidy.

Bro this is too much! I don't even wanna buy it anymore hahaha

14:53: On a completely straight blade, the sharpening-angle change as distance increases away from where the blade is clamped has nothing to do with the distance from the pivot point to the blade. It is completely due to Lansky's notch through which the rod glides. Provide me with the dimensions of that notch, and I'll happily do the math for you. This sharpening-angle change does not happen on a true-pivot system such as the TSPROF. Both systems are subject to a sharpening-angle change on blades that curve relative to where the blade is clamped, however.

Lansky's angles are with the edge of the blade 5/8" from the edge of the clamp

Good stuff ! Lansky needs to make a clamp with adjustable angle hole, only one hole, that slides in a track and marked increments for different angles / ie blade edge distance from end of the clamp / or the distance to the 90° back vertical front edge of the clamp !

Can we have please your angle chart, with the real lansky holes angle? Thank you

Had my lansky system for 4 years now and been thinking about those angles, thanks for very good video, I nerded the heck out and putting the perfect edge on a vintage microtech m-socom :) thanks for very good content, oh yeah and subbed btw. Got a knife and outdoors channel myself, check it out if curious ;)

What do you call the tool used to measure the angle. I'm referring to the metal gauge with the meter and measurement settings etc.... Thank you very much.

Wow, talk about precision! Makes perfect sense though.

Every review I can find of this Lansky system is only sharpening pocket knives .... what about chefs knives - does it work on 8 or 10" blades and bigger ... or is it not suitable for such sizes

In layman's terms what do I need to do to make them angle correct.

👍

I was wondering why my knifes were not sharpening, and actually dulling

they weren't "forcing" you mate. you were free to leave

Hmm interesting. And now more time consuming 😂 to sharpen my knife

Lansky instruction and free Pythagoras class.

Great info put whey to fussy for me

its so easy to get the right angle with basic math, correct? so why would they get it wrong? they had to intentionally mess it up or your wrong

The problem with this is it assumes there is no knife. You could not have the angle so acute with a knife in place. When you put a knife in the jaws the stone will rise causing the angle to increase

Ok, now how to compensate for the difference in distance to the base in the middle and on the tip of the blade? For a long knife you get sufficiently smaller angle at the tip which sucks because the blade itself is usually thicker there and you have to remove excessive amount of material making a tip more fragile and ugly.

Does the actual angle actually even matter??...as long as they are consistent it seems that the actual angle doesnt matter...maybe because certain angles stay sharper longer?...I have no clue

I guess this is great for everyone who owns micrometers and vernier calipers. I found the presentation rather mind-boggling and I am not convinced it takes all this to sharpen a knife. It would have been nice if the information were condensed and easier to understand. I will take a few more goes at trying to follow this. Right now I will stay with my stones. Ain't got no problem in using stones.

where can I get that spreadsheet? I was going to create one myself. I was thinking of having a spreadsheet where you can look up or select the width of the blade.

Thinking about getting a lansky. Should I get a diamond or non diamond version?

Damn it

OMG!!

I don't understand why what you mean by "right angle calculation", you say it a couple of times. When I went to school 50 yrs ago a right angle was always 90 degrees.