Sharpening Wheel For Razor Sharp Blades! MDF
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- เผยแพร่เมื่อ 24 ธ.ค. 2024
- Sharpening has never been so easy! Stones are great but also very expensive and time consuming. With this MDF wheel it takes a matter of minutes and the material is extremely cheap. I saw many using and making wheels like this one, too many to name them all, if you want to make it and you are looking for more information a quick search here on youtube will give you plenty options :)
Rate, share and all that good stuff guys :)
Thanks!
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Now, I'm a lazy prick, so if I can get max results with min effort, i'll try it. I needed something, since I suck on a whetstone. So I bought a Lansky. That was good. Finally, I could get a shaving sharp edge, but I wasn't consistent and still needed to spend considerable time doing it. Anyways, found a 20 mm thick piece of plywood today and gave this a go. Holy crap! I shit you not.....3 kitchen knives to scary sharp in 90 seconds. On my Lansky, that would have taken 30 mins and not as sharp.....not even close. I love trying lots of youtube tips and tricks and some are ok, some suck, but this has got to be up there with the best I've ever come across. Thanks for sharing.....made my day!
Haha!! So glad to hear that Mike! :) Thank you a lot :)
Mike Wasowski haha mike wasowski.... isn’t that the guy from monsters inc?
I use the lanky system, and it's amazing. However, you're right about the time it takes. I'd say 30 minutes is generous! I'd recommend getting the sapphire lanky stone. I've never had a sharper knife, but it takes me about 2 hours.
Nonetheless, this rouge method is fantastic. A video describing angle, pressure, and what you're actually doing would be a good idea, too.
Possibly build a jig for us idiots.
B
@ The edge of either MDF or plywood will have lots of end-grain wood fibers - which is what carries the buffing compound, and rubs on the metal of the knife blade edge. There's really not too much difference in the amount, nor angle of the edge's wood fibers between the two.
L
Back when this process was new, the wheel was made of plywood and the compound was Silverline Fine White. I ordered the compound about a decade ago and plan to actually make this wheel someday. It's amazing how time passes.
Been using the compressed cardboard wheels similar to this for years. I run them backwards on a grinder motor so the rotation is moving away from the edge just as you do. There may be a bit more heat with MDF due to a higher friction coefficient, so a lighter touch may be required. The system comes with two wheels, one for sharpening with 300 grit powdered carbide glued on the wheel face. The other is plain for stropping with compound. I now wear a faceshield due to having a 14" Khukuri thrown into my face just below my nose. Luckily it was the spine that stuck me and not the edge. Still had to get stitches and clean underwear. I also run a foot pedal switch.
Damn! :( I'm sorry for you bro... I hope you recovered fast!
Yeah, just a few stitches at the ER that left a non-noticeable scar under a nostril. But the mental aspect of it still haunts me every time I fire up that motor. I now make sure my better half checks in on me in the shop. Been working with machines for 45 years and that was the first injury. Could have been my last....
You say 300 grit. Is that close to jewelry Sam or rouse, polishing compound? It looked like the sharp edge was facing rotation? Is that correct?
@@placitas52 milk ml? NJ omni hi by by DJ no 9
@@placitas52 no ...away from edge
A sharp edge is often described as "Two perfect surfaces meeting together" and polishing them is a very good way to get close to that concept.
Great project!
Thank you sir :)
i've seen several knife sharpening builds this is by far the simplest i will have to try thankyou for sharing
Thanks man :) You won't regret :)
The top edge of a car door window works also
Yep! What Mike said! I'm building one soon. I spend an hour on wood chisels and blades for planes and they're sharp but poor. Wit the help of a hammer I can get a jagged cut through paper(LOL). This will put me back on the job where the tools are 90% of the craft . Cheers Mr.. Top effort thanks.
Your MDF wheel is a marvelous idea. It works well and gives a perfect burr to my knives. What i did in my setup is i use a grinder with variable speed to make it more precise. Also i polish on the back so the wheel spins upward. In case my knife is caught in the wheel, it just fly upwards and away from me. Thank you so much for sharing.
can't believe how well this works!!!😃😃👍👍
You made this man? :)
yes i did almost as per video (a little smaller) I now have a 4" square of bare skin on my arm from the newly share carving knife
Garry Topley outch
Garry Topley ``
Amazing! Bro…you successfully just brought every stone and sharpening system down single handedly! I so wish I could have this, and because of how easy it is to make, I CAN! Thank you!
I like your idea, the way you used a pre drilled peace to make a perfectly vertical hole on the disc
That's the idea I'm taking first out of this video.
Gonna make a set of pre-drilled holes of my commonly used drill bits on a bench press, to use with a regular drill.
This is it! Old idea that works better than All the fancy sharpeners and beats them in speed and price.
Yeah! :) Agree
Please excuse my ignorance: isn't the grey surface plastic? Wouldn't that be a problem with wear, in that the MDF will wear and the plastic wouldn't, causing a lip to form?
Nice! I've tried truing my mdf wheels with old chisels, #5 rebar, etc. but can never get it cleaned up and perfectly round. Any ideas what I might be doing wrong?
Is that a rubbing compound your putting on the MDF to help sharpen the blade
I think they call it jewelers rouge. But it is basically a rubbing compound
Please can you tell me the proper name of the polishing compound please. Cant seem to find it. A google search doesnt bring it up and everyone who uses it on youtube never mentions exactly what it is. Many thanks
Hi Steven! I bought mine at the home renovation store, it comes as a polishing set for metals. I think it's also called "buffing compound" should be easy to find :)
gave up on regritting the mdf wheel, made an 8" plywood wheel, glued on 240 grit emery sandpaper, lasting over 50 sharpening and still going without any signs of failing!!!!
what were you rubbing onto the wheel? wax....very cool vid thanks
Great tool. Try some 1 micron diamond paste (ebay about 2 bucks) for extra sharpness and shine. Also penetrates the wheel and lasts much longer than buffing sticks.
I always recommend putting a drop of mineral oil on this then running it so it spreads on a rag! Best way to spread compound I’ve found.
Knife building friend of mine showed me how to do that with a wheel made out of chip board a long time ago. Never considered MDF . Thanks for sharing.
Thank you so much for getting back to me. Much appreciated. I think i have got it now. I'm assuming you hold the knife horizontal at all times and just move it back toward you and down the wheel to the angle selected. On another video I saw a fellow that had a piece of armature wire at the position he wanted to grind. Now that makes sense. Again, thank you.
Many thanks for this video in which you show how to get the job done with basic tools that are in most people's toolbox. Simple and elegant.
One of the most helpful videos I've seen and no talking 👍👍 awesome 👌👌
One thing confuses me. You must have a drill press to have made the straight holes in the drilling jig (unless someone else made it for you). If so, why didn’t you use it for the centre hole?
2:00 -- I love that bench grinder. Where can I get one?
Здравия тебе и процветания твоему каналу !!!!! Когда увидел тиски с надписью СССР , подумал , что ты наверняка из словян !!!
I noticed the also... But then I realized not the Cyrillic alphabet. Why would a Russian made vice have USSR on it?
Thumbs up for using the ultimate, best, cheap and razor sharp opinel knife.
Damn yet another of your projects going straight onto my to do list! Well done as always!
Haha! :D Great man :) Thank you a lot :)
I can't believe that worked! I will do a mdf wheel on the lathe and give it a try! Thanks for the idea 👍🏼
How'd it go?
For all the comments on this older video: 1. He no longer uses music in his videos. 2. This is a power strop. I use this system and the blades don't get hot, so no loss in temper. Similar systems are used at knife factories. Several of the MDF wheel systems offer two wheels. One has an impregnated grit edge for sharpening, the other wheel is as above - a polishing compound is applied for stropping. 3. I mark the side of the wheel with several angles to set a reference then power strop by hand. You are able to feel the angle is correct against the wheel when you match it with the factory or existing angle. 4. Check his newer videos for a link to the Amazon supplies he uses or click here: www.amazon.com/shop/blackbeardprojects
Thanks for the tips.
How do you mark the edge with a few angles and how do you use them?
I cant visualise it sorry.
@@terrytailor Hi Terry - I do not mark the edge of the wheel, I mark angles on the side of the wheel. In this video you will see the curved arrow he has marked for the direction of rotation on the side of the wheel. (Time index in this video would be around 3:07) Visualize the side of the MDF wheel as a circle. Start at the top of the circle and then draw a radius from the top to the center of the circle. That will become your zero degree mark - or if you took geometry, the Y axis. Draw another radius from the center at 90 degrees from the Y axis toward the right side of the circle. This gives you the X axis and you will now have a right angle. Bisect or divide that 90 degree angle in half and you will have a 45 degree mark. Divide that angle again and you will have 22.5 degrees. You could also use a protractor to mark angles on the side of the wheel. Again, start at the top of the wheel as your zero degree mark and then mark every five degrees to say 45 degrees. All this does is to give you a visual idea of where to position the edge of the knife blade as you can't see those angle marks when the wheel is spinning. A third method is if you have a standard grinder motor, it will likely have four long bolts that hold the motor and end shells together. Use the upper mounting bolt closest to your body as a starting point reference for your blade.
Can you use plywood and not mdf or is mdf better
gave up on regritting the mdf wheel, made an 8" plywood wheel, glued on 240 grit emery sandpaper, lasting over 50 sharpening and still going without any signs of failing!!!!
Question, whats the point? There's a thing called the razor sharp edge making system, it comes with the wooden wheel you attach to your bench grinder already made. I think its better than ordinary wood too. What are your thoughts on your method vs that system? Were you inspired by that famous system? how do these two compare? genuinely curious what you think. Thanks.
It is the same, the wheels aren't that important, all they need to do is carry the compound well, that's why he's using mdf. It is more in which compound is used (coarse/fine) and the consistancy while sharpening. I tried it and it works sharpens knives well with fine compound if a knife isn't beat up it refines the edge quickly and well. Those wheels are like 60/70$ and I don't think it is worth it. I got myself a used bench grinder for 35€ and some old mdf board that someone was about to throw away for free, out of which I made 2 wheels one like his and one rounded so I can sharpen recurves. I also made a third one which I'm gonna mount sandpaper on so if the edge needs to be reprofiled I don't waste a tone of compound and use the other wheel just for finishing. It isn't finished yet and I hope I didn't mess it up, but I have enpugh mdf for another one anyway. I made the wheel out of 3 cyrcles of 5mm mdf and stuck them together to be wide enough, it doesn't really matter if they are "well made" or anything, the system will work regardless. If it works for me out of junk mdf and year 1990 bench grinder I think you can't really go wrong, for 35€ + compound it is a bargon, half the price of the commercial wheels for the whole system. I hope this helped :)
Are you just moving the blade edge across the outer edges of the wheel? Thats where the black steel deposits are showing (clean in the center). I've been trying to lay my blade full square on the full width of my powerstrop but maybe i'm doing it wrong. ATB from the UK.
Hi! Yeah I'm just touching with the edge, not much pressure is needed :)
Thanks. Think I've probably been rocking the edge of the blade too much trying to keep it ALL on the flat surface.
This is brilliant. I use plywood wheels to polish jade and other stone - pulled fibers kill them after awhile. Next time I'm trying MDF - the stuff is hard and UNIFORM - what a great idea!
Yeah! :) Thanks man, the idea is not mine anyway ;) Have fun!
Well, I just got Ju Jitsu'd by the ole YT algorithm again. I just bought the WEN 10" wet sharpening system and then I see this clever solution. You are most welcome economy, glad I could contribute. LOL
So, you've got the polishing compound directly on the mdf?
I’m always impressed at peoples building abilities ...... thanks for encouraging me to try something new for myself!
I'm more shocked howmuch effort and time he put into it. Way to much for me lol
Can you use and polish compound? Like jewelers rouge compound? Is it better to use a liquid form? Thanks and really cool video! I have an extra bench grinder laying around.. I’m going to build one today!
Do you put the polishing compound directly on the wood? Or did you put a strip of leather?
What substance have you applied over the wheel ?
Please let me know the chemical name of that.
On screen it shows as"Fine polishing compound".
That is the name of it
Do someone remember when I made this "tool rest" 1:52 ? :)
Black Beard Projects was looking at that tool rest thinking nice idea, don't remember seeing it in the last 6 months of subscription.
was built not too long ago for a totally different purpose ;)
Ha ha got it, yes for the take down ski limb project ^^
Oh yeah! :D
I was at work at the time, then as soon as you said it was for something else i knew it was for bending but couldn't think straight away ^^
Walter Sorrel did the same thing. Just wonder if the blade should be sharpened on a stone prior to the MDF-wheel. Which paste do you apply?
Yep! I use fine polishiong compound. if the edge isn't busted no other sharpening is needed :)
Great video! I'm going to have to make one of these!
Thank you brother :) super useful!
Hello Black Beard! I have a few cuestions on same thing... At what RPM has to go the motor? Is that a very important thing? I mean, i have a electric grass cutter motor (a small one) but it has high revolutions... more power instead speed or a mix of power with speed? (like 1hp motor) THANKS!!! GREAT GREAT VIDEO!
My biggest concern has been that the MDF wheel might explode from turning at high RPM, since that isn't the intended purpose of the product.
I think just for my own piece of mind I'll try to find a lower RPM grinder (1725 RPM) and give it a go.
Yes i agree that i would not try it with mdf at all, but you can make one in Plywood and it will be safe.
I am a printer by trade and cutting and folding paper is my gig. I can attest to wood fibers ability to wear away steel. Even tungsten and hard chrome surrender over time with just paper and a little moisture and a gentle rubbing action. Using a compound to assist, no contest.
I found a guy on e-bay (in Germany) selling 22mm x 13 cm (about 5" dia) disks for peanuts so I bought a couple. Do you think they will be too small (fast)? I will have to figure out how to drill the hole exactly in the middle, but that isn't rocket science. I also ordered a green fine polishing compound stick. Is there any disadvantage of working with the wheel turning toward one rather than turning the motor around? I would work from the side anyway, not from the front. Thanks for the useful idea.
Thank you for watching! First off, don't use it the other way around, the blade can catch in the wood and it would be pretty damn bad. I've seen others using a wheel spinning thorwards themself and sharpening with the edge facing down but I never tried! Be extra careful anyway :) If the disk have no hole in the middle I think you will have to turn them a bit on the motor, getting the precise center is hard and even a bit off will make the wheel wobble too bad for sharpening! Good luck Bruce, and have fun :)
Thanks! I'm sorry, I guess I didn't make it clear that I would never try to sharpen against the rotation of the disk. I'm old, but not tired of living. I thought I would just drill the center hole and then do as you did, using an old chisel or the sharpened end of an old file to turn the disk true. I'll let you know how I do.
And if you out a polishing wheel on the other side you can make your blad look good too. I have both.
What do you apply onto the wheel before sharpening?
Does this method simply polish and deburr the existing bevel,edge or is it making a new edge? I'd try it because I dont buy expensive cutlery.
I use a fully stitched buffing wheel for my wood chisels and plane irons on a 10" bench grinder. The buffing wheel is actually 8" but make the point about the size of bench grinder because you can stall the wheel with inadequate motors. I find it only works with good quality steels as it rolls the edge on cheaper tools. I have a set of Chinese wood carving chisels I paid about $50 for, and buffing them after sharpening them on a 10" CBN wheel immediately dulled them. You do need to be careful doing this with wood chisels as it will put a tiny curve on the underside of the chisel if you work it too hard, and the chisel will not be flat to the workpiece. Easily fixed by re-sharpening them - I use DTM diamond plates - and remember to use light pressure on the underside. I probably use this method of honing about 20 times before reconditioning with the DTM plates to get the angles nice. BTW rather than slicing the paper at an angle, try approaching square on to the paper, That;s my test for truly sharp.
Curious why you didn't cut the disk all the way through with the router? (Seriously, not a criticism, just curious.)
I don't have a bit long enough :)
That is a cheap and effective solution. THANKS!
How well would it work if you wrapped a strip of leather around a wheel like that? Would that maybe hold the compound better?
I absolutely LOVE this.
I'm a fish cutter.
I wish I could get my knives that sharp.
Perfect! What exactly is this polishing compound you apply ?
Thanks! Just regular fine polishing compound for metals :)
Thank you! From all the sharpening projects I have seen in TH-cam, this is the easiest to build and seems most effective. For me it is the method of choice. I will build it soon. Thanks again.
What's interesting is you actually where able to put a bevel on those knifes with only a polish compound...! That was amazing
quick simple and obviously effective, amazing job
Thanks man :) :)
This an old trick but its a good one because any one can sharpen a knife with this method. I have made many knives over the years and guitars made from magnesium as well lots of other useful artwork and tools Im going to subscribe.
Great idea! 👍
Will a smaller version work for a bench grinder with gaurds?
I guess it depens how much smaller! :) and also what tipe of blade you are sharpening, may be enough for pocket knife and such :) Can't you take off the guars? I did on this one too
Black Beard Projects ok I'm looking at purchasing a buffer from harbor freight. I might try this sometime
The thing using MDF means any way you 'shape it', there is even grain available for holding the compound, so turning specific shapes into profile means you can do curved gouges, and any non flat cutting tool. I made one with variable curve in it, from large radius to smaller, so many different curved chisels can be done in seconds..
Так чего он использовал? Я ноль,желательно с разжевкой,плиз))
Great project. Cheap, easy and effective. Kill the music 😂
Great idea 👍 I didn't expect wood to make so good job
Very good Black Beard! I watched this twice, but can't seem to find the wheel diameter. Is that something like a 10" or 12" wheel?
Thank you!! :) yeah it's something about 12'', I made mine as large as I could! If you want the exact measure I'll take it for you :)
Black Beard Projects Yes, thank you. I'd love to know what size that wheel is. Both height, and width.
Would this work as well with a piece of wood such as pine?
I highly suggest you not to use wood, it could fail really bad with rotation forces since it's not strong in all directions. Composite materials are way better for that.. I've seen some use plywood, but it may have problems with mass balance. Look for a piece of MDF if you are building this, it should be very cheap :)
This is incredible dude! Totally gonna go find some old motor to strap some MDF to now!
I was considering buying a set of expensive Japanese whetstones but now I you came up with this.... Wow!
First
Because of the bell button man
AWESOME AS ALWAYS
Thanks bro
what a useful, helpful, valuable, practical tip!
Any danger of messing up the temper along the edge due to heat? That's why I always thought using a wet/ or oil stone was best... Or a slow turning wet wheel...
This is used very gently :) No much pressure, the edge doesn't get hot at all :)
Mine does heat a bit but Black beard is right, very light touch is all that's needed and make sure you have enough compound on the wheel. I just sharpen a few passes each side and then let the knife sit for a minute and repeat the process.
What RPM is the motor you used and the diameter of the sharpening disk? Please and Thank you.
Need to check! I'll reply you here tomorrow :)
2800rpm and 24cm diameter :)
Absolutely one of the best videos ive seen demonstrating this. Great work !
Thanks for a great video idea. Do you think it would work with plywood instead of MDF ?
Thank you for watching Dimitris! Yeah I've seen some use plywood too, but it's not as consistent as mdf and the edge migh be harder. Never tried myself anyway :)
bonjour de france ,quel pate tu a mis sur la roue en bois ?
Simply explained and simple to do. Thanks
Thanks!
I've seen good MDF sharpener builds but that portable lathe/tool rest device is brilliant! Please make a video of that!
Hehe... I made that for a very different purpose xD Here is where I built it: th-cam.com/video/1VwN3BtWF50/w-d-xo.html
Black Beard Projects .
А абразивной лентой не проще ли было? И без лишних усилий.
Hi, I really liked your video, help me.
I sharpen hairdressing scissors, would you have to use stone first to make a perfect edge? If so, would emery stone have to be used?
Nice project, thanks for sharing, but I have a doubt, what is this that you put on the edge of the MDF?
Fine polishing compound
Thats on my to do list. You made it look too easy. Well done.
Thanks man! :)
Ciao, ottimo video. Non ho capito cosa usi da mettere sul disco prima della molatura
Ciao, grazie! Applico pasta lucidante fine, quella per lucidare i metalli che trovi al brico :)
Hey. Thank you for the video. please tell me what you rubbed the disk for sharpening knives
В целом идея, вполне жизнеспособна, но я в качестве эксперимента, вместо пасты "Гои", попытался бы наносить "алмазную пасту" разной фракции, в результате получишь, тот же производственный "Эльборовый" круг, во первых уменьшится трение, и уйдет проблема перегрева, во вторых увеличится интенсивность съема металла, что улучшит контролируемость формирования режущей кромки............................................модернизацию дарю))))Идея не нова, в качестве основы, изначально был и остается, круг из алюминиевого сплава. выбор такой, не случайный, он относительно дешевый, достаточно стойкий к нагрузкам и сравнительно мягкий как металл, вполне подходящий для внедрения в его поверхность, мелкой фракции алмаза. Вот и весь секрет! На сколько я знаю, этому изобретению больше семидесяти лет...
What was the white compound you were adding to the sharpener?
Fine polishing compound
ماذا وضع على القرص قبل البدء ب سن السكين؟؟؟
او ما اسم مادة التلميع المستخدمة ؟؟؟
Good Video! What are your motor specs? RPMs and horse power?
Thank you! 2800rpm and 1/3hp if I remember well :)
How about trying one with a strip of leather glued to the face? Leather seems to load up and hold more compound but has enough "give" to strop the edge like a mirror.
Yeah I'm sure that would work very good too :) I thought about doing the same to see the difference! I have to try :)
What is the max rpm speed you can spin mdf before the centrifugal force causes it to explode & injure someone. Even proper grinding wheels have a maximum rpm speed. Accident waiting to happen.
Link us to a video or website describing a MDF wheel disintegrating. Thanks!
I made two of these set up on a double wheel grinder and can tell you it only takes one absent minded moment to lay the knife edge back to front on the wheel and it could be your last lol.
Curious to why not do the routing over scrap and step it all the way thru?get a square ,flat edge without having to do it with a chistle brilliant none the less
What was chalk like material applied on the MDF wheel? Please specify. Regard.
It was polishing compound. Comes in green, red, white, yellow, etc. green is the most common used for sharpening knives.
Is that wheel spinning too fast? In order to remove metal on really blunt knives I assume moderate pressure would need to be applied, would that over heat the cutting edge and make it brittle?
Yes. That's a serious issue.
simple but super effective and cheap!👍🏻
Thank you sir :)
Sweet! That was great! 👌👍 Thanks for sharing!
Thank you my friend :)
Great Vídeo. What kind of compound is that you are using? Thanks
That looks like Melzmine Shelving Material and not plain MDF Board. Have you tried plain MDF for a sharpening wheel?
Or does the melamine on each side to hold the wheel together? Wouldn't it sharpen different without the melamine?
Where do y'all buy polishing compound? Only stuff I found was on Amazon.
Harbor Freight has a lot of them chalky sticks.
@@atorsionx9406 Thanks, I'll definitely check it out. I haven't really looked into it but for polishing stuff is there a specific type of cotton wheel or bench grinder I need? Or could I just got to home depot or hf and get a wheel for the old one I've got?
@@oddball0022 You give me too much credit, I don't know that much. :)
Interesting. MDF itself is also abrasive. It's notoriously hard on cutting tools.
Molto interessante, la prima volta non avevo ben realizzato quanto utile fosse.
Solo una domanda (davvero molesta invero), quanti giri e che potenza la mola?
PS: Complimenti davvero.
Grazie!! :) La mola gira a 2800rpm e dovrebbe avere 1/4 (o 1/6) di cv! Basta poco xD
Vedo che anche a te piacciono i rottami pre industriali!
Saprò far valere anche i miei allora!
Complimenti, continua così ;)