DIY MDF Sharpening Wheel (XL 10")
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- Опубліковано 19 гру 2020
- If you're a DIY (do it yourself) person like me, this is a great project! I wish I would have made this years ago to keep my knifes, hatchet, axe, etc all sharp!
I used scrap MDF and bought the the other supplies, links below.
Beeswax amzn.to/3Zv6aKA
White Polishing Compound (aka Jeweler's Rouge) amzn.to/3Y4nEMJ
Silicone Carbide Grit amzn.to/3EJKnXE
Bench Grinder amzn.to/41CHdz0
Here's a the original Razor Sharp Edge Sharpener via amazon. amzn.to/3mv2VPu
Exact label is Razor Sharp Edgemaking System 8 Inch Deluxe Blade Sharpening Kit | For 6 Inch Bench Grinder | Made in the USA
0:01 Intro
0:10 Switch rotation of bend grinder
0:40 Remove guard
1:14 How the wheels are held in place
1:32 Measure max size of diy sharpening wheels (ended up being 10 inches)
1:39 Drawing perfect circles to cut diy sharpening wheels
1:50 Cutting diy sharpening wheels
2:17 Gluing together two MDF circles to double the thickness
2:48 Drilling hole in the middle of diy sharpening wheels
3:24 Installing sharpening wheels
3:49 Testing balance (it was very unbalanced)
4:17 Turning the wheels to make it more balanced
5:28 Impregnating the MDF with the Silicone Carbide Grit
5:53 Add a touch of beeswax to the Silicone Carbide side after it has dried
5:57 Add a touch of polishing compound to the other wheel
6:10 Dull knife, will not cut paper cleanly
6:17 Sharpening knife
7:17 Sharp knife, now will cut paper clean
7:29 Is it worth the hassle?? (outro)
Contact me: lawnkove@gmail.com - Навчання та стиль
You're a sharp guy, Koven. That was satisfyingly awesome!
😉
It is always nice to design something, make it and have success. Good for the brain too. Great idea to turn the base around, who would have thought such a simple remedy to reverse the direction.
Thank you! This was precisely the purpose of the project. I almost didn't film because I know how amatuer it is.
INSANE! And as always I mean that night the best possible way. Sharpening certain tools has always been a major pain in the ass on my grinder. Love watching your jumping in headfirst to crazy projects like this.
Thanks again 😉
Damn! This is SO going on new bench grinder! Awesome dude a shed load of thanks flying your way.
Wife cam at 4.38 though!!😂😂😂😂😂😂😂😂😂
Yep, she knew something sketchy was going down! Glad it helped!
That was epic, gonna do this next weekend. Will go outside for the shaping part haha. Thanks for the video
Good luck! did you get around to it?
That’s why I bought me a tormek. Best investment ever. Add leather hide to one of the wheels(honing wheel)👌🏽.
I'm going to buy some stones pretty soon, seems ultimately quicker and a bit safer.
Not going to lie, when I heard you say "let's get into it, I heard you speak with an Aussie accent like I was watching Self sufficient me. Thanks for the video, I'll definitely be making one of these soon.
Lol, I have to go back and watch it. Just looked up that channel, great one more that I'm subscribed too! 😉
It's Maaaaaahk
Dedicated sharpener in a few hours work and it saves tons of time sharpening any other way 👍👍
Cool project!!! Wish I had saw it before I did mine.
Thanks Roger! Do you plan on making another?
Love these kind of vids!
Thank you Sven!
Damn I was nervous when you turned that on. And I didn’t even know I needed this in my life until now
I figured it *shouldn't blow up when spinning 3,600 rpm. 🤠
@@kove
👀
May have to try this on my Shopsmith after I'm done cleaning/restoring it. With variable speed, I feel it should be safer and more controllable. Yes, I will have to work on the opposite side.
Variable speed would be great!
@@kove yeah that extra few inches being a 10" should be generating more heat, do you cool the metal by dipping it in ice water or something? The Higher RPMs of a smaller wheel bench grinder scares me to try to make this conversion on my grinder without some kind of router variable speed controller.
Koven, the Handy Man!
It's cool to learn!
This was the best video I've stumbled across on this. Great Job! Was in the middle of building myself one and the damn chisel kicked back and the Handle took a gauge out of my palm. The only thing missing is the safety piece - the blade must turn up and away from you, not toward you!
Ouch, sorry to hear that! Has it healed okay? Did you finish making the tool?
Oh ya sharp things. I work a wood lathe. I have a 9 stich scar when something went wrong. Kickback, happened so fast I never a thing. What a mess that made.
Great video! I can count on one hand the informational how to videos that incorporate music where it actually adds to the video in a positive way. Also, the way you describe the info is very clear. I can’t put my finger on it but you definitely have what it takes to do these types of videos
Thank you Irazu. I will remember your kind words.
WHAT? The background noise was louder then your description. And I am not talking about that motor.
Mad scientist at work lol . Very cool. Merry Christmas to you and your family :)
🔬🥸, thanks man and Merry Christmas you and the family as well!
Awesome Man I want those wheels too
Thanks Leo. I'd make the diameter smaller if I had to do it over. 6" or 8".
If you have a drill press, need to check the clearance between center and back upright support/ tube. Mine is 4 inch. So made 3/4 inch ply wheel 8 inch diameter on a Grizzly 10 inch bandsaw. Only need 1 wheel because I have linen and cotton buffing set up which uses the same rouge etc, keeping one grinding wheel alive for repairing chipped blades, chisels, sharpening bits etc. I run my buffing gear on an old B&D mains drill, and Drill Press. No need to get fancy when the gear is already in the shop. The Band Saw BTW is a gift to any workshop, along with a good Lathe/Mill and welding gear. A wood lathe is a toy ...lol.
Nice!!
I turned my motor base 180 so that the wheel is turning away from you. Despite being careful, it takes a fraction of a second at that speed for the blade to catch --and it's coming straight at you. Otherwise - great idea !
Thanks Splash!
@@kove lol...don't ask me how I found this out. Luckily I wasn't injured and saw someone on You Tube turn the motor 180 from the base....and thought...yep. Also forgot to add..new subscriber. Thanks for the videos.
Yikes, thank goodness! Thank you!
Is mdf meant to sharpen smaller items like knifes and a regular stone grinder meant for thicker items?
The MDF mainly is the surface for silicone carbide, and the polishing compound. Although the mdf alone did take off significant amount of chisel by itself when I was balancing it. Backlapping compound is made of the same silicone carbide.
@@kove nice dude! learned somethin new everyday, you should rig up a reel grinder! i know that would be nearly impossible but would be dope af!
Nice 👌
Thanks Raul
Nice vid. Thank you.
Glad you liked it Metl!
That’s pretty cool koven. I love watching your diy inventions How long will it last for you think. Or would you just make new wheels? Great job Merry Christmas to you and your family
Thanks Mike! It should last a lifetime, as you can recondition it at any time by sanding off surface (36 grit) and reapplying the glue and carbide grit. Merry Christmas you and you family too!
Very cool idea.
Thanks man! It was fun project. Learned a little more about woodworking, and a ton about knife sharpening.
Nice, if you cut small x's around wheel.
The part you turned. Load with valve grinding compound.
Reapply as needed.
Load other wheel with the white Rouge.
With x's on face .
Ez to renew. Makes you able to make scary sharp tools.
Make sure you use good MDF wood.
Cheap stuff can fly apart. Yes it makes a difference!
Nice and eacy. No problem following.
Thank you! Cheers!
I love that we can see the moment you realized you can now have razor sharp lawnmower blades lol
lol I still need to do that, perhaps today?!
Your the man!.
Thanks Jack!
Thanks for an informative and well shot video. I liked how it was obvious you were learning as you made it. I will be making my own over here in Derby in England over the next few weeks.
Too many blunt knives!
Thanks! I love learning things by trial, and diy. Good luck!!
My next project, your's is working great.
Haven't need to use it since, but it worked great at the time!
super skill
Any tips?
@@kove
Apply wood sealer to the sides of the MDF wheels and let it dry completely.
MDF absorbs moisture quite easily and as the wheels absorb moisture they will swell and weaken.
That may be one of the best videosa on making a sharpener that I've seen. To the point, quick and concise. I liked it. I'm going to build that for my kitchen.
Thanks for the video. I will check out more later.
Glad it was helpful!
So does the carbide cut an edge on the blabes? I made one just like you did by gluing two pieces of 1/2 inch mdf together but only made the wheel 8" in size. I keep the wheel spinning in the downward direction and keep the gard on the grinder too. I works good but I only made one disc with no carbide. Should I make a carbide disc for cutting?
I plan on doing this very smooth so I can sharpen my lathe tools. I may just attach it to the lathe...
Great idea, would it be difficult to center it each time?
Nice rebuild, but the best results for sharpening you get is with a lower speed, finer grit and with a wet stone.
Thanks for the tip Bjorn, I intend on trying that out.
Great video! My new homemade MDF stropping wheel (not the one with silicone carbide) might need to have green compound reapplied - but I'm not sure. The perimeter of my wheel is all black. How do I tell when to apply more compound and how do I tell when to strip off the old compound and redress? Thank you!
Thanks Bob! Mine lost its color pretty quick after 4 or so knifes., I'll probably reapply the next time it's used. The manual only says how to reapply, but not when.
The dark color is metal from the sharpening process.
Only reapply a small amount each time. More is just a waste of the compound
Thanks for a very informative video. That's an awesome project! What is the name of the white grinding compound block that you used and where can I buy it?
White Polishing Compound (akaJeweler's Rouge) amzn.to/37zCl3k
@@kove Thank you!
No prob. Thanks for watching and good luck!
Why did you use glue for the silicon oxide application vs. bee’s wax? When you need to refresh this wheel will you use glue oe the wax? Thanks
My understanding is the glue with impregnates the wood, making it longer lasting.
Hi, great video! I have just finished my MDF wheels, I wander what's the grit of your silicon carbide. Cheers!
Hey Bernardo, thanks! I believe it was 180 carbide
If the Carbide Grit faded, do you apply glue on the wheel then put the Carbide Grit on top so the glue can hold it?
hm, don't know. Maybe I'd sand it off, then glue a whole new layer on.
1inch ply works 100 times better.. And safer too as mdf is prone to blowing out over time so be careful if u dont change it out! Plus ilu wont need the carbide chips an will get a better result with ply n just the compound. ✌️
Ply, well that is unexpected. Have you tried it?
I always wanted to do something like this but I'm afraid it'll ruin hardened steel by getting too hot. Any experience with that?
I don't, but it's a valid concern. I don't notice much heat when doing it. I'm sure one could pay close attention and make sure to stop if there's heat building up, or have water near by.
1:19 These faceplates are a mockery of the consumer! You immediately get eternal end vibrations. First you need to roll the turner with a normal faceplate with an outer diameter of 32 mm. And use discs with such a hole.
good advice, thanks~!
@@kove I recently made two videos about it.
Checking them out now, great content over there. Sidenote, surprised hasn't YT hasn't recommended it to me.
What grit silicone carbide did you use? What was the beeswax for?
It's labeled 180/220 grit. The beeswax a) helps control heat & b) helps the grit stay on
the wheel longer.
And a shop vac would make your life a lot healthier too. Not to mention less messy.
Yep, didn't even cross my mind.
This looks great, but Id have a real fear of that knife digging in unexpectedly into the mdf and that grinder kicking that blade back at you.
it won't unless i hold the knife pointing down. Appreciate the concern :)
I like the music. Thanks.
Glad you liked it, thanks for watching!
How thick did you make the wheels? If you were to make it again, what would you change?
They are two thin pieces of MDF glued together, it was scrap but I think it was 1/2 or 5/8 MDF so total around ~1". If I had to do it over again, I'd make the diameter smaller because it's hard and could be dangerous to balance.
Actually if you want to round out/true up the diameter of those mdx wheels fast and with less hazard potential, out a tiger paw horizontal sanding disc on a 4-1/4" angle grinder. Fire up the bench grinder. Hold the angle grinder so the tiger paw flapper wheel is flat, above the apex of the mdx wheels to where the tiger paw will meet the top of the mdx discs at a right angle. Slowly bring the angle grinder straight down. You can feel the high points vanishing. Of course, as always...but especially since you're working at the to of the wheels, wear a faceshirld and a respirator...respirator especially if you glue the boards together like that. Great video tutorial by the way! Love it.
A standing block would do the same thing and be a little safer than a chisel
Good idea!
@@kove You made a video about what not to do. This also applies to safety precautions.
Try to order a faceplate from a turner with an outer diameter of 32 mm and buy abrasive discs with such holes. And also remove the weight imbalance of abrasive discs and then correct their radial geometry with a diamond pencil. After that, you will be very surprised how perfectly the discs rotate without any vibrations.
Hi, great job. How much power does the grinder has?
Thanks Stephan! I believe it's 3/4 HP
What is the final thickness of glued together mdf pieces; or does it just depend on how much room you have on the grinder? Thank You
Yep, depends on the grinder. If I recall correctly, mine was 1" thick from gluing two 1/2" pieces together.
hi what glue did you take because i took bison wood glue d2 and the powder grit didnt sit with the glue and when i started the machine its all gone.if you can tell me exactly the glue to buy it
i don't recall, sorry
a lot of GREAT workshop improve going on here! (perhaps that's why you 'wife cam' shows you in ballistic armor!) Just one question. All the commercial mdf (aka paper discs) systems seem to have one of the wheels with radial cuts along the circumference. Is that not really necessary?
Thanks dude! Good question, I don't know. I would have did that too, but would make it even harder to balance.
How often do you clean the stropping wheel?
I've sharpened about three knives and haven't done it yet, now you mention it I might as well add a touch to it. That said I haven't cleaned it at all.
Here's the manual I'm going by even though I made it DIY. cdn0.grizzly.com/manuals/g5937_m.pdf
Awesome. I'm an amateur knife maker and one aspect that I always have trouble with is sharpening. Ill be making one of these wheels in the next couple of days. Thank you for the video. Also, may I ask what is the purpose of adding beeswax to the silicone carbide?
Thanks! Helps keep the heat down, and helps the silicone carbide stay on the wheel longer.
@@kove thank you very much for the reply. I know this is a slightly older video of yours so I appreciate the response 👍
Glad to help! If I can to do it again, I'd probably make the wheels smaller so it's easier to balance and less mass to shake things around.
@@kove I was thinking of maybe 6 inch? I only have small bench grinder so I thought that size should be ok
What ever size of wheel it came with is what I'd do. Also don't necessarily need to make it double thick like I did. Once you have the supplies, the MDF is cheap to try different options.
Great how to video. What thickness are the wheels?
1"
Help! Made one of these today. Double thick 1/2" MDF glued together like you. Used a chisel and sandpaper on a block to get it smooth and round. Charged it with white compound. And all I could do is blunt my knives, which were sharp before. I use stones and a strop to get hair shaving sharp easily. I thought MDF would be an upgrade. I have a variable speed bench grinder and I definitely have some side to side wobble on the wheel. Is this why I am finding blunt knives after doing this?
Sorry lito, don't know what could be causing it. 🤔
@@kove TX. Trust, to try remedy, I measured 20deg from vertical, and 20deg from horizontal and tried sharpening with the knife (held vertically) to those two angles. Have about 4-7 passes each side. Just blunt. Am ig holding it wrong?
i'm not a big safety nark but i kept thinking that thing was gonna be sticking out of his neck for some reason.
not wrong..
A circle cutting jig and a router would have saved a lot of scary shaping with a chisel.
Indeed. I considered that, I don't remember why I went this way.
What number grit was the silicon carbide you use?
I went with a smaller size 6" wheel to get slower speeds, as my bench grinder spins too fast.
Yeah, there are some tradeoffs with going bigger. Unsure if it's worth it the more I think about it.
Wheels looked like spinning grenades.
Accurate
A year or two later now so my question is how many visits to the ER did it take to abandon the diy Version? How many other folks went to the ER trying to make their own?
I've a tourniquet in the garage, can't be too safe.
That looks amazing and a real value!
How is the front door fish doing?
Thanks Wayne! The last one died when the pond drained itself because of a slow flow rate. Putting another in there come spring.
@@kove Thank you for your reply!
Does the edge get warm from the friction?
It didn't take much to sharpen mine, so not for me.
Does anyone know : Can I use plywood or solid wood instead MDF material to make those wheels? Big thanks.
Pretty sure that would be a bad idea.
Can apply grit carbide 120 for knife of butcher
I'm not sure Khalil.
Where did you get the jewelers rouge?
Amazon, I also put a link in the description.
Did you put the wax on top of the grit?
I think so, it's been a while.
Someday that wheel is going to grab the blade and throw it into your chest. You should sharpen on the down side of the wheel. Otherwise, great job. Please be safe.
Thank you! I reversed the wheel rotation, so the orientation was indeed the safer way.
Next time, if you choose to add music to your video, please make sure your voice is louder than music. So we could actually listen.
Thanks for the feedback
If you have a table saw (yes, a table saw) or a band saw, or a router, there are a TON of circle cutting jig videos on UA-cam that cut perfect circles every time. Make the jig and use it for other projects. A jig will save a TON Of time on this project.
Everything in this video is terrible, including safety.
I'll have to check those out, thanks!
I had a kevlar vest and helmet, I'd like to be upgraded from terrible safety to bad please.
Amen!
Hello.
I just found your channel and I was wondering if you might be able to help me.
I bought a bench grinder that came with one 6” x 3/4” x 1/2” grind wheel and one 8” x 1/4” x 1/2 wheel.
I messed up and broke the 1/4” wheel and now I can’t find a replacement wheel anywhere.
Might you know where I can find a replacement?
Thanks for any help and thanks for the tutorial on this build too.
Turn the grinder 180 to grind away from you.
Thanks, it's the first thing I did in the video.
What function is the bees wax?
According to a company that makes similar product, 1- helps control heat & 2- helps the grit stay on
the wheel longer.
Nice video…I’ll spend the 80 dollars and buy it commercially..lol
Fair enough!
iirc... when i made mine, i used #35 grit Sand paper instead of a chisel and the wheels spin away from me, making it much safer during 'sharpening' (polishing
Good idea with sand paper. the wheel was spinning away from me, I reversed the rotation early in the vid.
Joven, the wheels could be done from plywood or wood? Or it has to be made from MDF
Hi Jorge, they are MDF. Thanks for watching!
@@kove I know that it isMDF. My question is if I can use plywood or wood instead of MDF.
@@jorgenj1 Ah, I see. I don't know but others have said they've used plywood. I tried to emulate as best I could the original design. I don't know if the manufacturer's decided MDF is better suited, or simply cheaper.
@@kove thank you for your reply
@@jorgenj1
DON'T USE SOLID WOOD !
The centrifugal force can cause it to explode along the grain line.
(possibly with disastrous results)
Plywood should be safer than MDF but MDF seems to be the preferred material.
What was the yellow stuff and can you use any glue
Beeswax
Beeswax, it a) helps control heat & b) helps the grit stay on
the wheel longer. Yes, regular wood working glue for the grit.
Bravo Turkey İzmir selâm
Hello, hope you find some usefulness from my video. What not to do, and what to do.
I have a LOT of safety concerns about using the MDF on any rotating apparatus.
It's not designed for centrifugal force and the larger the diameter, the greater the force will be. If that wheel explodes, the result can be a disaster.
I know that many people have made these wheels and never had a problem BUT will YOU be the first casualty ?
Fair point
Good video. Just a tip, loose clothing is not a safe idea around rotating equipment. Bad things can happen. Other than that, great information. Thanks...
Plus it is rotating the wrong way, super dangerous
was it still out of balance in the end?
yep
Does the wheels work better than a belt?
I've never tried a belt sharpener.
The wheel has to turn not towards you ❌ be carefull friend
It depends on which side you are using. I use the top, and the top spins away. Good looking out though.👍
Soundtrack should have been more sinister 😂😂
🤣 yes it got 10 out of 10 sketchy for a bit there...
We know we’re in danger territory when you bust out the flask jacket lol
Also had on two pairs if safety glasses
I'd be concerned about the centrifugal force and the wheel exploding.
I'd like to make one but with a slower RPM, maybe a 1725 RPM motor and 8" diameter.
Another concern is MDF was NEVER intended to be used in this manner. There have been NO tests to determine the strength under centrifugal force and there is NO safety rating for this kind of use.
I was concerned too! Hindsight, I'd keep the smaller diameter wheel and have a variable speed controller.
Is this not super dangerous? Is there no way of the blade catching somehow someday and throwing the knife?
Some may say that. I made it ;)
THE GRINDER WHEEL IS TURNING AWAY FROM THE BLADE EDGE. NOT TOWARDS HIM. SO IT CAN NOT CATCH.. IF IT WAS TURNING TOWARDS HIM HE WOULD BE CUT UP BY NOW. HE DID NOT TELL YOU THAT... THAT IS WHY AT THE BEGINING HE ROTATED THE BASE, SO THE WHEELS WOULD BE TURNING AWAY FROM HIM AT THE TOP.
@@mefirst4266 I'm aware, it just seems exceptionally dangerous. The day I wrote this comment was the same day I came home from a friend's house who was showing me his as well as the cut on his finger from basically doing what this guy is doing.
I don't know much about these things, heck idk what they are called.. bench grinder? I'm sure this plays into my fear of them lol
Where do you buy the carbon bits
amazon, should be a link in description
Doesn't work on super steels with carbides. Heats up the temper and makes the edge annealed.
thanks for the insight!
How thick is your 10" wheel?
about one inch
I imagine a maniacal / sardonic laugh 😆 was part of this project! Don’t forget your eye protection 🥽 safety sally is watching 👀
Spot on
What was the black powder you put
Rock tumbling powder
Silicone Carbide Grit amzn.to/3arvlaC
Scary! If I sharpened butcher knives like that, the master butcher would probably kill me. The same service will do my diamond sharpener and relatively fast. And no pointless work. It goes so just as repairing the grinding wheel?
Yeah, it was a simple project for fun.
that kid at 2:49 scared the shit outta me
second person to say that lol
Shouldn’t it have lower RPM for grinder? Goes pretty fast.
Yes. I'd make a smaller diameter next time, and/or get a lower RPM machine.
I'd think 1725 RPM would be safer but grinders with 1725 RPM motors are a bit hard to find.
I would consider making a fixed support with adjustable height and angle to control and maintain bevel angle of the tool or knife being sharped and while polishing the edge. Thus making it easier to control safely. Recommend for anyone trying up the mdf do it outside, and make sure you are wearing a mask or respirator and eye protect. What is the beeswax used for? Bet it would be great for putting an edge on a chisel, plane iron, adze, axe, hatchet or draw knife. With the right jig it could be used to sharpen drill bits.
I hadn't thought of that, great idea! Finding the desired tangent angle at X, Y and Z heights. Also good advice about PPE when grinding the MDF, it gets everywhere. From what I've read, the beeswax a) helps control heat & b) helps the grit stay on the wheel longer. Thanks for the insight and checking it out.
Is better to use a rasp file to make it even than a chisel, its a lot safer.
Solid advice, I didn't have one on hand.
how did you figure out the center to mark and drill
Sorry, I don't recall.
MEASURE ACROSS AND DIVIDE BY 2 ... SO HIS WAS AT 5 INCHES. BUT HIS WHEEL IS TO LARGE.
what is the brand of this grinder
Don't know, got it at harbor freight
Beeswax amzn.to/3Zv6aKA
White Polishing Compound (aka Jeweler's Rouge) amzn.to/3Y4nEMJ
Silicone Carbide Grit amzn.to/3EJKnXE
Bench Grinder amzn.to/41CHdz0
0:01 Intro
0:10 Switch rotation of bend grinder
0:40 Remove guard
1:14 How the wheels are held in place
1:32 Measure max size of diy sharpening wheels (ended up being 10 inches)
1:39 Drawing perfect circles to cut diy sharpening wheels
1:50 Cutting diy sharpening wheels
2:17 Gluing together two MDF circles to double the thickness
2:48 Drilling hole in the middle of diy sharpening wheels
3:24 Installing sharpening wheels
3:49 Testing balance (it was very unbalanced)
4:17 Turning the wheels to make it more balanced
5:28 Impregnating the MDF with the Silicone Carbide Grit
5:53 Add a touch of beeswax to the Silicone Carbide side after it has dried
5:57 Add a touch of polishing compound to the other wheel
6:10 Dull knife, will not cut paper cleanly
6:17 Sharpening knife
7:17 Sharp knife, now will cut paper clean
7:29 Is it worth the hassle?? (outro)
buen video mudo
!Gracias!
Update: 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!!!!
sweet! Thanks for the update Paul!