Are You Ruining Your Knife Edges By Using A Powered Knife Sharpener? (MAYBE)
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- Опубліковано 7 чер 2024
- Are You Ruining Your Knife Edges By Using A Powered Knife Sharpener?
Do knife sharpeners like the work sharp over heat knife edges? This is usually referred to as "burnt edges". This is a piggyback video for the work sharp MK2 video here→ • PRO Knife Sharpener te...
How to sharpen a knife in 5 minutes → • How To Sharpen A Knife...
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Thanks
Chapters:
00:00 INTRO What is a “burnt apex”?
01:23 How FAST an apex can over heat (VERY FAST)
02:21 Over heating an apex ULTRA CLOSE UP in real time.
04:02 What causes over heating and how you can avoid it.
07:11 DISCLAIMER about using powered sharpeners
Music from Epidemic Sound - Навчання та стиль
I can ruin the edge without power tools.
yea, let my mom try and sharpen it. Her kitchen drawer is a house of horrors... Ever year I dedicate a weekend trying to salvage the ones that are still savable, and often I have to grind back a third of the blade's width in order to get rid of all the chipping that she induced with one of those ring pull through sharpeners from the 70s. (come to think of it, I should actually just steal that thing from her so she finally stops using it)
@lukearts2954 haha, yeah, some people don't care the way we do about their blades. My missus' mother stays with us, and she has her own knives, I don't let many touch mine. Her knives are all bent and chipped, I try clean them up occasionally, but it just frustrates me.
@@veridico84 smart man!
Me, too! 😁
I’m going to get into free hand sharpening, and I’m excited to be able to say the same.
Nobody has done this before. You are a freaking pioneer!
Don’t know about modern DSLRs, but back in the day we would get cheap UV filters to screw onto the lenses to protect them. They didn’t really do anything except add an extra layer of glass to keep dirt and damage from the actual lens glass. They might even have polycarbonate now.
Your dedication to providing proof of concept and your constant reinforcement of good technique and practical blade work, are the reason why so many people enjoy your content. Keep up the great work.
As the head chef of a kitchen I am very happy to have found this channel. I've learned not to use the weird V sharpeners, and that our knife honer is useless.
That’s the first time I’ve seen the grinding process and its effects that close. Thanks for the risk and awesome footage.
Me too!
@@OUTDOORS55 Is it possible for your set-up to add a mirror (polished steel) where your expensive lens would be and place the lens further away (out of harms way). You might also be able to use the same mirror to direct the light onto the region of interest.
This trick is done in ballistics and, for example, is used to film a bullet leaving a barrel head on. They shoot the mirror instead of the camera. Quite a bit cheaper to do the testing this way.
good idea! @@DreadX10
@@DreadX10I can imagine this not being possible because of how close the macro lens needs to be to the subject.
i don't know how much my word is worth but you're putting out THE best and most informative knife content on yt and anywhere else , thank you and congrats!
Totally agree. 👌
Thanks I appreciate it! Im just screwing around and showing results in my garage 👍
Agreed
He's great, I'd recommend also checking out neeves knives.
immediate thumbs up! as a (hobbyist) knifemaker i have to say, this is one of a very few substantiated observations on this this topic. Probably not the type of video that will generate a ton of clicks, but very appreciated by some!
story of this channel... And exactly why I love it: he doesn't mislead, he doesn't do clickbait, he just gets right to the point, and proves all of his claims with clear footage that he made himself... The accuracy of information is unique and thus all the more worth the watch.
awesome to see that apex crawl back, grain by grain as each takes a tiny scratch of metal away from the back side of that edge. Mesmerizing to watch...
That's why I converted my Harbor Freight 1x30 and installed a variable speed sewing machine motor. I run it at 1800 rpm, which is about half the speed of the stock motor. A light touch and keeping the blade moving keeps the temperature low.
I got a half speed bucktool 1x30. I haven't done the math but even if it's a little more expensive you can't beat the convenience. I also have a 2 speed bucktool 1x42 but I use the 1x30 more often because it's easier to move.
If you're going for that type of upgrade where you can control the speed, I'd always suggest going with the following. In rough order:
*3 Phase Motor. Requires at least 240V and a VFD (Variable Frequency Drive), but you can find them cheap 2nd hand for stupid amounts of power.
* Brushed Permanent Magnet DC motor. Cheap, often good enough, can be a bit louder than most others. Needs a speed controller, but those are cheap.
* A BLDC (Brushless DC) motor. Needs a DC power supply. Basically a small 3 Phase motor, but with a fancy name and takes a specialty driver board.
* A 120V "spindle motor". At a glance you'd think 120V 3 Phase is super rare, exist, but that's the magic keyword. Needs a 120V VFD.
* The variable speed brushed Universal motors used by some Harbor Freight tools. Cheap, Loud, runs on 120V AC. Inefficient.
The other option is to just find an AC motor with the speed you want and use that. It's the cheapest, fairly efficient option.
Wow. This highly magnified footage is absolutely wonderful. Fascinating and so telling of what burr formation actually is.
Thanks so much for your relentless curiosity and creativity to dig deep into the mysteries and myths of blade sharpening. A topic that definitely needs more of a scientific approach than magical thinking.
Each of your videos is very informative, and occasionally also very funny.
Thanks a lot for your work ! 👌👍👏👏
Very interesting! You could have used an IR camera as well for showing the different temperature zones during grinding.
I had always heard that IR cameras get weird when used on shiny surfaces. Might have to paint the blade and settle for measurements just back from the actual part being ground
LOL! I'm not sure if your humor is just as dry, or if you're being serious. In the off chance that you were serious: yes, I think he'll do a little dance of joy at the idea of buying a $2000 camera body just for a one-of video and then throw it in the drawer to collect (metal) dust...
@@outsider344 that's right. There's also an issue with resolution. At this magnification, having a high enough resolution on your substrate will make it super-expensive for just a very niche application. Thermal imaging is usually _not_ high res for multiple reasons, including price. But I think this person probably thought of the camera apps on iPhones that can simulate (and look like) thermal imaging. Those will not do the job here...
@@lukearts2954 price and ITAR restrictions. Thermal imagers count as a "dual use" item meaning they have potential for military use. For commercial sale they are limited to low resolution or low frame rate. You can still get a decent one for around 300$ that plugs into your phone though. They are low frame rate so you would have to really work to sync up it's pictures with the moments the knife heat changes. Expensive, yes, but not crazy for someone doing what he's doing. Honestly they are fun and useful to have around, beyond UA-cam use.
@@outsider344 Correct about shiny surfaces. We want to see the black-body radiation of the metal in-situ. Having reflective surfaces would make us see the (reflected IR-image of the) light-source and not just the metal doing the reflecting.
That's some of the most incredible footage I've ever seen! THANKS for your channel, the content; and the science behind everything you do.
Wow, that’s really awesome. Also cool to see the burr formation. Thanks!
That closeup video was awesome and much appreciated! You talked about the two keys for not overheating the blade: belt speed and pressure. I often sharpen larger knives on my HF 1x30 belt sander and have never had an issue with heat. I use the slack portion of the belt above the platen with very light pressure. On smaller knives, I stick to either traditional sharpening or my Worksharp.
i do the same on my 1x30
Vadim Kraichuk / Knifegrinders Australia did a study on heat in grinding and found the Worksharp to overheat edges, but only with the highest speed setting and the finest belt.
Yeah, this dude is awesome for sharpening info. There's also science of sharp that did some electron microscopy of knife edges. Then there's Outdoor55 doing moving pictures of this amazing macro and disproving myths and educating the masses
Thanks for putting the lens at risk for us. Excellent footage indeed.
I´m a german Knife Lover and i Love your Videos ! I´ve learned so much from them ! Thanks, Respect and greetings from germany...😌
I genuinely appreciate the no bullshit videos. Always a joy to watch, its refreshing. Especially as everyone seems to be moving towards tiktok-like videos with constant sound effects and trash research repeated as gospel.
Don't forget all the ai generated fake content
You've been killing it with the content lately. This is great stuff.
This is good stuff. I'm a novice beginner sharpener and I always enjoy your vids and appreciate the info.
Great job. One important note is that overheating always occurs at the tip of the knife, where there is less steel to act as a heat sink. Some also believe that there may always be a small loss of hardness just at the apex when using a grinder, even if there is no apparent color change. The damage would cause a loss of edge retention but be limited to just the apex and could be removed with subsequent sharpenings.
Absolutely love your channel very informative and educational. Thank you so much. Not sure if you was aware but I absolutely love your theme Music it’s the same theme as “the outdoor gear review” channel. Absolutely has helped me a ton. Thank you.
Thanks I appreciate it! I actually put music in my videos to help keep them from being stolen and re uploaded to another platform since the music is from a paid service. They will copyright strike music that is not paid for. It's definitely helped😉👍
Outstanding research and demonstration. Thanks!
So happy to finally see proof of what I’ve been saying since the Worksharp came out - with proper use, a small machine designed like that doesn’t have the speed and torque to damage a heat treat. SO many people just say “oh I won’t use a Worksharp because they ruin heat treats” as if they have some secret knowledge - well, YOURE WRONG people. Nothing like a microscopic image for proof!
Nothing feels better or worse than vindication.
Wow!!! Thank you for doing this. Great video!
Excellent footage. Thanks for the priceless perspective. Very well done
Remarkable footage! Well done!
Great video man. Love the channel and the content is amazing. No other channel has stuff like this. Great work man.
Great content man! Well done!
What cool close up shots! Really awesome of you to make and share this with the blade community. Thank you.
Thanks for the video, that was fun to watch.
Fantastic video! I loved seeing the details and always enjoy EVERY video you have been doing recently-working through these kinds of details for better understanding. Helps understand stones, and what sharp really means.
Lovely videography - well done Alex
Absolutely amazing footage Alex thanks for sharing this it’s really appreciated
Man I’ve wondered about this for so long! Thanks for this!!
Awesome videos! Thanks for getting/showing this.
I like how professional your videos look now
I miss the shack in the woods...
Those were nice
Love my Ken Onion Work sharp. I feel its the best for somebody like me who only sharpens once and a while. Then I want to work quickly on a lot of knifes, and don't have time to use a stone. That and i always forget my stone sharpening skills between sessions.
Kudos. Thanks for taking the risk. Awesome.
Great videos and great demo. I've never seen burnt edges demonstrated so well anywhere else. Thanks for your careful work!
Simply incredible. Most amazing UA-cam video. Commitment, detail, information. Thank you.
Another great informative video. Thanks So much for all the information you provide. Keep up the great work.
Amazing Visuals, thanks for covering this. Im glad your lens didn't get messed up👍
u could use a temperature camera, to make it even more exact. I found it very interesting. U could test the small sharpener that way and be 100% sure that you are not overheating the knife.I would be cool i think. Very cool shots btw.
This thing works for me, thank you for showcasing it
Thx for risking the expensive equipment - nice shots. Another factor that contributes to overheating is dull belts. Some people try to squeeze the last life drop out of their belts, but the less cutting the belt does, the more heat it generates.
First off this video is great. I'm a Mat Sci. student and the closeups and the way you portray the science in an intuitive, simple way, is phenomenal. Second, I just wanted to say that I learned sharpening from your videos years ago and the content you've been producing lately is absolutely amazing. Nobody else is making content like this from what I know, and I'm absolutely here for it. So proud of how you've progressed and I'm very happy for you that your hard work seems to be paying off (views/subscribers). Keep up the good work!
Thanks for showing us.
Awesome awesome footage! ✌🏼
Awesome, informative video and super sweet shots! Thanks for putting your equipment at risk for our viewing pleasure 🙏
Very cool footage and info bro😊
This is incredibly cool footage - thanks!
Very very fantastic video! Compliments for the macro close-up! Greetings from the Netherlands, Frank
Thank you for all the effort you put into your video's, I have learnt so much about the art of sharpening a knife
Please do a test of the Sharpens best pocket knife sharpener! Its one of the first things that comes up on youtube when people look for sharpeners. Millions of views, but barely any reviews.
Thanks! I just received my MK!! last week and love it! Started with a few junk knives and was able to get them super sharp in just a few minutes! Incredible video!
Good talk... great footage!
That was cool. Thanks!
Amazing, thank you!
Yea, I've never had a knife turn colors on me. I inspect the edge each time after a few passes. I've definitely had a few knives get hot to touch, and that's why I keep a quenching cup near me.
Outstanding video - thank you!!!
If you're looking for more video topics, I recently purchased a DMT diamond stone, but apparently the wrong one... it has like a steel mesh suspended slightly above the plastic base, with most of the surface being holes, rather than grinding area. I'd be interested in whether or not I should continue trying to learn free-hand sharpening with this device or if I should spend yet more money on a more traditional sharpening plate, because my results have not been particularly good and I'm not sure to what degree that's caused by my own inability and to what extent it's caused by the stone's architecture and/or if there's a different way you should swipe the knife across the plate with that sort of stone.
Thanks for deep diving on this one. 👍🏻
Cool footage Alex! Thanks for risking your expensive equipment to get it.
Another Awsom video
Wow that footage thank you
Terrific camera shots again Alex! Fresh crispy edges, yum.
This is awesome, finally a video that puts this to rest, too many people afraid of the worksharp because of misinformation, or immediately write it off as bad
Wow. That footage was so impressive and key. A lot of people talk about edges but you take it to another level. Edge is the last thing I am struggling with and you provide amazing information and visuals. Also, yes I was one of the people who got a white and blue sharpening stone from Amazon to try and learn on. I stepped up to a Norton stone but it looks like there are still better learning options.
Very informative!
Amazing Videos you took there 👍
Your are definitely a pro at your profession. Great info.
Very cool! I’ve been playing around with a 1x30 and I will be using more caution from now on.
Incredible video! I didn't hear the dialog because I was so fascinated by the video footage. I'll watch again and pay attention. THANK YOU for this video!
Amazing footage dude!!!! as allways
Incredible footage
OMG. Great video! The outro music was epic!!!
Super images. Thanks for taking the risk.
FANTASTIC images, Incredible presentation.
well, I for one, found the presentation _very_ credible.... ;P X"D
Very informative, thank you :)
Great subject and video!
Thank you for the great content!!!!
Glad to see that is the conclusion! I bought one of these from the last video, have only just got it! :)
Great video thank you
Excellent video 👍🏼👍🏼👍🏼
Thank you for sharing broooo🙏🏼
Thanks to you and your channel I sharpened my first knife for real tonight. You were right along.
Before I had had attempts to use the crap aluminum oxide water stones. It was a nightmare. The experience using the 20 dollar diamond stone is night and day. I can honestly say the knife is sharper than I started because of it and now my wife is happy to have a sharp kitchen knife once again.
Thank you for teaching me this skill and suggesting the right tools!
If the edge doesn’t last I guess I’ll need to get a strop but I did my best to minimize the burr as much as possible by doing individual low pressure back and forth passes.
Thanks you!!
Well done! The color change by the belt sander was a great shot.
Thank you, Alex!
Great video ❤
Good video. I use a worksharp and a strop to sharpen my knives.
Such nice innovative and brave work you are doing Alex. One additional factor leading to overheating is if your belt is dull. Sharp grit cuts cooler.
I, like many others here believe you offer the very best sharpening and knife info on the platform. I also like the worksharp precision adjust system. I'm not able to hand sharpen on stones, but your skills are always impressive.
To get the best shot, attach the knife to the camera lens so that no matter how much shake there is, the knife stays in the viewfinder, and it's just the background that shakes.
Just awesome footage! I have ruined heavy mower blades with a disk grinder (go figure). I switched to flap disk and nary a problem since. Much more forgiving, hardly heats up, and still does an excellent quick job.
Very useful! I want to be able to grond convex shapes towards edges.
great video!
Thanks
I wouldn't want to use one - it would take away any skill I have developed, plus you'd lose the meditative quality of sharpening a bunch of knives. Really enjoying these videos, take care, Eddie.
Wow, this was fascinating, I never thought about this when I see them use these to sharpen on forge in fire.
Thank you!