GAME CHANGER sharpening method
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- čas přidán 21. 07. 2024
- In this week's video, I show you how I hollow grind my plane irons and chisels to establish a new bevel or re-establish an old bevel using a CBN wheel on a bench grinder. This method makes the actual sharpening process more consistent and significantly faster without crazy sharpening skills. Cheers!
If you’re into DIY, woodworking, or like to live vicariously through other people making stuff, please consider supporting my work by watching the videos and liking/subscribing to my channel. I’m on a mission to post weekly videos with a mixture of beginner and advanced projects. If you want to know more about a specific process, jig, or tool, please leave a comment below.
Hope all of you enjoy this video! Thank you so much for watching!
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Links to products relevant in this video:
Rikon 80-805 Bench Grinder : amzn.to/3vcgYOt
WoodRiver 180G CBN wheel : amzn.to/3W6gbwv
Oneway Wolverine Grinding Jig : amzn.to/3v2Cyon
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Below are links of products I use and recommend wholeheartedly. If you're in the market for any of these products, please consider using the (affiliate) links below.
My favorite [small] woodworking tools:
General Saw - Japanese Gyokucho Pull Saw - amzn.to/3x30bhW
Dovetail Saw - Japanese Dozuki Pull Saw - amzn.to/3v5imlL
Japanese Plane- Kanna (65mm)- amzn.to/3irvyi0
Japanese Plane - Kanna (40mm) - amzn.to/3w3WPLA
Chisel hammer - Japanese Chisel Hammer- amzn.to/3z8TzjT
Mallet - Wood Is Good Mallet - amzn.to/34ViZUq
Square Ruler - Starrett Combination Square (steel head) - amzn.to/3imGX2N
Marking Ruler - Incra Precision T-Rule - amzn.to/3cnrQ59
Caliper - iGaging 6" Caliper - amzn.to/3pxRyJM
Mechanical Pencil - Rotring 600 - amzn.to/3x6jJ53
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Lens- Canon RF 24-105L - amzn.to/3irv5wg
Lens - Canon EF 100 2.8L macro- amzn.to/3w3hu2n
Lens - Canon EF 70-200mm 2.8L ISIII - amzn.to/3iwtBBf
Lens- Canon EF 16-35mm 2.8L - amzn.to/3cn7aKI
Light: Godox SL150 II - amzn.to/3x6Wfg4
Light- Godox M1 - amzn.to/34XEyDA
Audio- Sony UWP-D - amzn.to/3x38KcE
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Audio- Zoom H6 - amzn.to/3puU7MK
00:00 Introduction
00:32 Background and reasoning for this sharpening method
02:30 Bench Grinder Setup
04:09 Hollow Grinding
06:12 Advantage of hollow grind and sharpening technique
07:55 Sharpening plane iron
09:50 Testing sharpness
10:44 Concluding remarks - Jak na to + styl
You had me at "doesn't require a lot of skills" - awesome video
How to be Rob Cosman for the lazy and untrained.
Let me congratulate you on a great explanation of how you utilize hollow grinding. Yours is one of, if not the best and clearest explanations I've seen.
Wow, thank you! I really appreciate the kind words and glad you found it helpful
Excellent explanation of a topic I was a bit confused about. The visual aids helped me understand the idea even more than watching you actually sharpening the iron. Having it enlarged like that was a stroke of genius.
"Or we're back in 2020 and you need toilet paper." HAHA! That was hilarious!
Nice concise explanation of sharpening! I feel like this topic involves so many varying degrees of expertise, which seems to evolve so much throughout a woodworker's life, so there's always interesting bits of information you can get from others. I just recently started polishing with a strop after honing, and although it doesn't seem to make much of a difference in sharpness, it makes me a little more proud of my blades when they have that mirror finish and I don't see any stray burrs.
Because there are so many ways to sharpen, I think youtube is packed with somewhat conflicting information. Sadly, I might be adding to it. I used to strop when I sharpened using a honing guide or free handed. I found that the strop basically makes up for the lack of consistently hitting the angle correctly on the blade. Loved the mirror finish and it technically did make the blade sharper. However, it technically does cause micro roundover and I think it makes the edge dull quicker because its a tad more blunt to begin with. Using the hollow grind method, I don't find the need to strop because it is super sharp as-is. And I anecdotally find the edge to last longer. At the end of the day, sharpening is a matter of personal preference. If it works, it works!
Back in 2020 lol. Great video.
Excellent valuable video thank you.
I've spent thousands of dollars on sharpening equipment and this was super informative. I saw your most recent video and I never thought of blade material (A2 vs O1 vs PMV-11) as being more important than the number of grits I possess at hand.
At this point I might just sell some of the unneeded/miscellaneous stones I have and stick to a 1000 grit, 10K, and 13K (I have all PMV-11 tools plus I don't want to get rid of my 10K and 13K). I really appreciate your methodical and precise testing which backs your advice.
Thanks Brian! Hollow grind is such an awesome foundation before sharpening with stones/strop. I would never ever go back to anything without a hollow grind. You already know 10k and 13k are an overkill but if you like it, no need to change a thing!
Nice presentation. I would like to comment of a few things you did not mention. One is that you used a thick iron with a wide primary bevel in your demonstration. These are much easier to hold flat on a sharpening stone with a wide primary bevel than with thinner irons like the older Stanley planes which makes it harder to continually hold flat on the primary bevel. For a novice, watching your video may make them think how easy this is but in reality when they go to the flat stones they'll see how difficult is actually is to continually hold the iron on the primary bevel throughout the entire stroke on the stone. It takes years of experience to do this. My advice is they should get a honing guide. To the experienced woodworker it is easy but even I, a woodworker for over 50 years use a honing guide such as Veritas. Mine has a dial to change the angle 1 or 2 degrees to create a secondary bevel which is totally repeatable as long as you set it up first on the primary bevel all the time. It takes just a few minutes. Complete repeatability until you have to regrind a primary bevel once again. I get about 20 plus sharpening's before regrinding.
Secondly, you did not mention to put pressure on each side of the blade (left and right) while sharpening so as to eliminate plane tracks. This is a must. Most experienced woodworkers put a slight camper on some of their plane irons to eliminate this problem. It also makes it easier to square an edge relative to the reference face of a board by holding the plane off to one side to remove the high side.
I like a .002'' to .003'' shaving on the average. Less when smoothing a board prior to finishing. Never any sandpaper.
Watch Rob Cosman's videos on sharpening.
I like the type of wheel you use for regrinding. Do these create as much powder dust as real stones? I have to vacuum around my grinder often. The dust is bad to breathe even after you turn the machine off. You need to wear a mask as the dust remains in the air for quite awhile.
Hope this helps. I did not have any intentions of knocking you. Life is a constant learning experience.
I agree with your comments.
Great video. The labeled wood props of the wheel and blade are awesome. Very cool.
Hey, thanks! I'm glad you liked the prop. I wasn't sure if it was worth the additional time to include that. Thanks for letting me know.
I used to use leather to strop i now use a pc of MDF with diamond paste and i only strop a few times on it , it seems to work better than leather, but again thats just me .. great video !!!
Great stuff for someone who may have the budget for the setup or wants to do it this way.
3 different grits of sandpaper and a strop can resharpen the same blades in one to two minutes depending on how far gone they are
I've been wanting a grinding setup like this for a while now! You may have pushed me over the edge, now I just need to find room!
Haha. I don’t have a dedicated space for the grinder. So technically I don’t have room for it either. It’s small enough that you can tuck it away. It makes sharpening so much faster and is totally worth it!
Awesome video
Damn! Never thought sharpening was so easy man!! Thank u so much u deserve waaaay more!
An "old school" chisel-tip marker lets you do the ink job much faster. Lowe's carries the Sharpie PRO Xl Chisel Tip Black Permanent Marker or other options at office supply stores. Thanks for the excellent videos!
The good thing about this method is that it effectively does away with the need for a honing guide. Honing guides have their place but the wheel eventually gets gunked up with waterstone crud. In the case of LV they suggest that you oil the roller every 3 sharpenings or so. However the oil always seems to leach out and can damage the water stone.
You made the process much easier. Every other video I’ve watched try to make it hard. Thank you.
You’re welcome 😊
Great video, this is perfectly timed- I have been meaning to put a new edge on all my chisels
Nice. Do you hollow grind your chisels?
Thanks for sharing! I've got the Tormek jig setup on the Rikon with the Wolverine, and it's a little bit frustrating. But I'm slowly figuring out out.
Never thought about this, awesome! thanks for sharing
mr chikadee sold me years ago on the idea of the hand crank ginder. without a jig i am free in what i can grind, the hollow doesnt even have to be perfectly centered on the edge. all that matters is the relief angle established. ever since i got a second one with felt disc and compound to strop on. literally made most of my stones obsolete
Great instructions which I generally follow as I start with Tormek wheel then the Tormek strop to establish the edge. When it needs a quick touch up I use a carborundum stone so just the very tip gets sharpened. Shaving the back of my hand as instructed by my dad completes the exercise. Unfortunately I also follow your action of putting the plane down on the bench instead of on its' side or on a raised block to prevent accidental dulling of the edge - lol.
When it comes to sharpening your video helped raise me out of the sea of ignorance. There are so many opinions about sharpening out there, and some people will even fight about it, that your video is a really good starting point for me. Thank you so much Mr Suman! 😸😸🌷
Excellent video and great channel!!
Although I've been sharpening hand carving gouges etc. most often. I believe you are right in saying stropping is rounding the edge. I will be getting a set of stones to use. Thank you.
Best sharpening video I've seen! I've subscribed lookin forward to checking out your other vids 👌🏾👌🏾
Great concept and video. Can you give a description and source for the spherical washer
Great explanation!
Glad it was helpful!
30 seconds or less sounds amazing. I’m just like you, I hate sharpening. So much so, I don’t sharpen my tools as much as I should.
Same here. That’s why I decided to the hollow grind method. You’ll notice in the video I sharpen a plane iron in real time. While that took probably closer to 50sec, off camera, it really can be done in 30seconds.
@@WoodcraftBySuman I’m definitely going to get a bench grinder now. Great tutorial!
that was very insightful.. thanks mate
Glad it was helpful! Thanks for letting me know!
thanks for this video, buying the items
Great job! I really liked this video. You are right about sharpening being so controversial but I'm not interested in that debate. I use a different method than you that I am very happy with but I love your method and I think you explained it really, really well with your plywood mockups. That was brilliant and very informative! Keep up the great work!
Thanks man! Really appreciate the kind words. The way I see it, if the tool is sharp, that method is the right method. Thanks for watching
Good video. Common sense approach. The hollow grind approach is well suited to the modern, thicker plane blades.
Good video. I may graduate to a CBN wheel in the future (I have to save some $$$ for one!). I like the way you mix diamond and water stones. The only point I might add is that sharpening plane blades straight across without a camber (or slight curve) has limited usefulness IMO. The utility of my bench planes improved quite a bit when I started honing a camber on them. Let's face it, planing the edge of a board is relatively simple, and is where I still use a blade that is sharpened straight across. I dedicate a blade just for that, although it can be done with a cambered blade with practice. For planing face grain, you really need a camber, otherwise you will be left with ridges all over the place.
One more thing; a strop is worth its weight in gold. Stropping the edge of plane blades and chisels adds some to the initial sharpness, but is most valuable for touch-ups as you are working. As soon as my edges start to dull, I strop them, and find that I can go right back to work without repeating the formal sharpening process right away. I can strop the edge several times before I have to repeat the sharpening process with stones.
I have noticed that my tools develop a burr after a bit of use so makes sense to me.
@@deemdoubleu Re: Strop- Yep, I didn't invent it... I read it somewhere and it works.
I started out using an angle jig to sharpen, which was fine and consistent but also time consuming and involved a lot of extra "gear" to make it work smoothly. After that I started to sharpen freehand, which works pretty well for me on plane irons, knives and larger chisels, but is a real bear with narrow tools I find. The angle will also slowly creep up as I tip ever so slightly higher over time to get a bur along the entire edge, where I must re-establish a clean primary bevel by grinding.
And that is when I, also, started hollow-grinding. ;)
I settled on the Paul Sellers method. I came quicker/easier to me than I thought it would. But your method also foolproof with that hollow grind itself working as the jig. You made me laugh with the "or it's still 2020 joke" 😂 Great channel.
Where did you get a spherical bearing to match the wheel and arbor? Thx!
Thank you for the awesome video. With your sharpening method, how do you add a minor chamfer to hand plane blades using diamond and water stones?
He explains it in the video. The hollow grind aligns it for you.
'I don't know why people didn't tell me about this sooner.' 😋 But seriously I'm totally using this now. Thanks dude!
FYI: The woodriver wheel you have linked in the comment is incorrect. It's linked to the 1/2" arbor instead of 5/8" and 6" wheel instead of the 8"
Thanks for the heads up. I think the link is broken or something- I’ll find the product and update accordingly. Thanks
Thanks for a well done video. I too have recently begun grinding with a 180 CBN wheel but am considering adding a 600 to get a finer polish on the grind. Do you think there's enough value add to justify the cost in time & money?
Hi Michael, I don’t think so. I can go from the 180 cbn and straight into 4000g stone and it works just fine. I did that on a plane iron this week and it took about a minute to sharpen the blade in 4000 and 8000. The only reason a 600 cbn might be useful is if you’re a turner and you need a decent edge straight off the grinder.
Do you have a link for the spherical washer?
Super sharp! Time to make sushi. Great video
Aw man! You just reminded me to sharpen my kitchen knives. Haha. Glad you liked the video! Thanks for watching.
Great video. I would love to see some youtuber do a video testing if something like this could work for people with a smaller budget. In 2023, the equipment used in this video costs $638! Do the benefits of this method disappear with cheaper equipment?
Good 👍
Hello, Suman;
What is the 'tray' your stones are on?
That looks like a great way to hold stones w/out making a mess.
Thank you in advance for your kind assistance.
Have a GREAT day, Neighbor!
Gotta say, I sincerely appreciate the effort you put into these videos. Although with some tools I have developed some kind of 'muscle memory', it's always refreshing to, er, 'refresh' your memory 😄 (pun intended)
You mentioned a "spherical washer" for the CBN wheel Can you share links to those that you prefer?
Thanks!
And which CBN grit do you recommend???
'Unless you're back in 2020 & need toilet paper' 🤣😂 that made me subscribe!!!
😁
Worksharp 3000. CBN wheels. Freehand if possible. Never worry about it again.
The sharpie outlines on the model pieces make me think this guy was an elementary school teacher or something before CZcams, very well explained even for dum dums like me
That’s high praise but I have no teaching background. Haha
Awesome demo and demonstration with the wood blocks! I've heard "hollow grind" before, but never really spent the time to look into it. This video is a perfect explanation! Nicely done, although I will still despise sharpening...haha!
Glad you like the demo! I spent a couple of minutes between takes and sharpened all of my chisels and plane irons. I have one A2 steel and all of the rest are PMV-11. Man...I never appreciated the PMV-11 "feel" when sharpening as much as I did during this session. As a Canadian, I thought you should know that your home-grown steel blend is one of the most beautiful thing.
@@WoodcraftBySuman Thanks for reminding my to get my PM-V01 seeds into the ground. By mid-summer they'll be PM-V11!
@@MasonWoodshop Haha. You know, the craziest thing is: we are not that far apart. I'm in Buffalo, NY and we have taken up some stereotypical Canadian things like Tims and of course, wineries from Niagara On The Lake.
@@WoodcraftBySuman Oh wow, that's not far at all! You'll even be able to attend Blue Jays games once they transition to Buffalo from Florida. As a super-fan of the Jays, I'd like to thank Bufflo for being such a good host city last year!
besides TP, the reason for a shaving that thin is that then you don't have to sand the surface because it's as smooth as the blade polish.
Get a strop with jewlers rouge for last step in sharpening...it will blow your mind
I have used strops with compound like you said. It workes well in terms of sharpness. But edge retention wasn’t quite as good, in my opinion. It creates a micro rounding near the tip. I find a consistent angle of attack when sharpening, while it may not get quite as sharp, holds the edge longer.
@@WoodcraftBySuman male sure you are using a compound that is finer grit than your finest stone....as for edge retention - it is all in the proper technique of using a strop....I use the trend mirror paste....there are several videos that quantify how much sharper and edge gets w stropping
@@WoodcraftBySuman Paul sellers has an excellent video on stropping
@@jeremymcclanahan2389 funny you mention the trend compound. I have used the very one with great success. Still find edge retention to be better right off the stone if it is sharpened well with good technique.
Microphone on your cap is the new Google Glass look.
You know how everyone has a past they’re not particularly proud of? This microphone placement is mine.
Suman, thanks very much. Very logical advice and clearly a very efficient process. But one question: you mention that a "spherical washer" that secures your CBN wheel is extremely critical to results because it ensures perfect concentricity between wheel and arbor. I'm not familiar with that device, and I don't see a link in your notes. Can you elaborate just a bit more about that washer, and perhaps suggest where it can be acquired?
Sure thing. The company I bought it from has since stopped supplying the product. I hope the link here works. If not, search spherical washers 5/8 on Amazon or feel free to email/Dm me on Instagram and I’ll send the link to you.
amzn.to/3JJfLsw
Perfect! That link at Amazon shows me why the washer set works so well. The set of two washers is sort of a "ball and socket" that forces the arbor to stay in the center of the CBN wheel, enforcing concentricity. It all makes sense now. Thanks so much, Suman. (and BTW, I loved your comment on Witt's video, comparing tapping screw threads into pine to taping threads into cheese. I though he was a pretty good guy to include that on his video😂.)
@@LewHarriman haha thanks. He texted me and said he was going to tap threads on the table. Before I could stop him, he already messed it up. Haha. So we had to get some clips in there making fun of it.
Yeah. I just love the cross-play that happens between so many of my favorite CZcams creators. I've often added to my "library of experts" by tracking down the "other side" of such warm-hearted, good-natured horseplay. Thanks again, Suman.
Could this be used for knifes? Like a chefs knife?
I would not recommend this method for a chef knife. Usually the blades on a kitchen knife is thin enough that traditional hand sharpening on wetstone can produce excellent results.
That was pretty damn fast. I guess the next question is how long does it hold the sharpness. But then it's a moot point if you can take a few passes to bring it back to the base line. Also, do you recall which spherical washer you purchased? Thanks
The edge lasts about the same as a traditionally stone sharpened iron with a jig for example. The washers I bought is no longer available but this is nearly identical: amzn.to/3jsGFdO
@@WoodcraftBySuman much appreciated!
I can't believe I'm about to say this but...(I just ordered it all) and I can't wait to sharpen my chisels/plane! :)
@@hansangb you’re gonna love it. As with anything new, be patient with it. But your sharpening will never be the same again, in a good way. Congrats!
👍
Link for the rubber mat at 9:10?
amzn.to/3yk0Eix works pretty well as a dry rack in the kitchen. haha
I noticed you showed a Japanese plane in the very beginning of this video. Do you sharpen the Japanese blades using the same method?
Hi David- generally speaking, Japanese blades and chisels have a lamination of soft metal and a hard metal. This allows for easier sharpening without a secondary bevel because majority of the blade bevel is soft metal that cuts though quickly. This allows more effort to be concentrated on the hard steel without the need for something like a hollow grind.
What about gouges?
Where did you get your 3 plates??
They’re expensive but should last a lifetime for a hobbyist:
The diamond plate: amzn.to/3wQa42U
The shapton 4000: amzn.to/2Sjapfl
Shapton 8000: amzn.to/3j7ScMO
@@WoodcraftBySuman That's not a bad price for what you get...thanks
@@SamsWoodCreations oh good. The ceramic stones are super hard and barely wear. The only way to flatten it is by using a diamond stone. Which is why that three combo works well. The diamond plate can rust if you don’t use a protective coat after every use. The bora concentrated mix is probably the most cost effective: amzn.to/3xKuR8c
all for a measly 406 DOLLAHS! November Foxtrot Whiskey.
What about stropping?
ok that covid joke got me :D
subscribing
It gets funnier the further we get from 2020 😂
So no micro/secondary bevel?
Nope. It’s not necessary because you’re only removing such a small amount of material that your primary is technically the micro. Works really well. Highly recommend hollow grinding
@@WoodcraftBySuman gonna try it next time i need to grind a blade. thanks!
This is a sharpening method that I first discovered in 2002
I have been using a Craftsman low speed grinder. The bushing disintegrated, then the belt became like a gummy bear. But has not needed further repair in 10 years.
Your Amazon link to the CBN wheel is to a 6” wheel which doesn’t fit this grinder.
Thanks for the heads up. I’ll update it soon.
Skip the blab filler.
4:45
He uses a grinding wheel.
Can I bring my blades to your shop and borrow your grinder? 😂
I don’t mind sharpening, I just don’t like the time it takes away from working with wood.
"Why don't people use XYZ" - when in reality they do. but the way YOU show it makes it less consistent.
Well, I'll answer your question. More people don't sharpen like this because they don't own the expensive tools you mention.