Cheap Bench Grinder modification
Вставка
- Опубліковано 27 жов 2016
- Being a power tool with high speed rotating stones, I made this modification at my own risk and I showcase it here for demonstration only as an experiment. If you find this inspiring for your own uses please remember that what you do is not my responsibility and whatever you do with your tools is at your own risk.
2023 Update: there are several people criticising this video and its contents. To all them I say that perhaps you misunderstood my purpose. The purpose was to not have the sparks flying on one's face or body while sharpening blades. The wheel is spinning THE OPPOSITE WAY, UPWARDS FROM DOWN rather than downwards from top. The bottom exit is not directed at the operator's face but away from it since it has been turned upwards. No polarity is changed. I take the point that on one side there may be a need to block the gap. This is a cheap grinder for light home use and general sharpening, any of you professionals can carry on doing your heavy duty grinding for work as best you know, I am not here to tell you what to do. This is for those who are uncomfortable with a grinder that is facing and spitting debris and sparks towards them like I am. As for gloves, if I wish to protect my fingers from being accidentally grated I will use some dedicated thin gloves, and believe me I still have my grip and no risk of them being sucked in as you say. The stone has the same probability of exploding as in the standard configuration, but the wheel is spinning upwards and guards are oriented at 45° upwards so that any debris, including your "exploded stone", will go away from the operator towards the rear of the tool, look at where the opening is.
Finally, I have been doing DIY safely for decades and I never had the slightest accident, I am not as stupid, irresponsible or ignorant as some of you think. Others have appreciated my reasoning on this and I have used this grinder several times in this configuration with no issues.
P.S. The knives and blades I have sharpened like this are actually sharper. I am not a professional metal worker so I don't care about the final finish, just getting sharper blades at home for free is good enough.
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A bench grinder is a very useful tool for quick and precise sharpening and general grinding or sanding of various metals and hard materials. What makes a bench grinder more useful than an angle grinder or a mini-tool is that you move your item against the tool and not the other way around.
They can be quite cheap but they often are configured in a way that SOME, LIKE ME, find too cumbersome and ineffective, and in my opinion not that comfortable.
In this video I will demonstrate how you can safely, easily and quickly modify one of these cheap grinders to work much better for sharpening and precise work. No additional expense is required (unless you too buy a white wheel), nor sophisticated tools other than a screwdriver, and the change is non-destructive and completely reversible, so you can return the grinder to its original state should you change your mind or for warranty purposes.
Obviously whatever you do with your tools is at your own risk. - Навчання та стиль
i got the same deal , pick one up myself . i spun it up once and then started thinking along the same lines as you about making it better. its why your vid got my attention.
It's actually unsafe to use gloves because they can get caught and hurt your hand badly
True, but it can be just as unsafe _without_ gloves, if the grinder grabs or kicks the piece, shifting it a lot or even shooting it off into your fingers/hands. Or working on small pieces, your fingers/hands meet the wheel. Then of course, there's severe burns from hot work pieces.
I would suggest using common sense. Don't use gloves that are too big, especially in the fingers so you get floppy glove finger tips, and just _be aware and attentive_ to the risks, and where your gloves are ik relation to the grinder wheel (or band) at all times when wearing them.
@@pr0xZen Do what you want, but it's bad practice to use gloves while working around any rotary equipment even under powered ones like this grinder. And you never even want your materials to be hot enough to create a severe burn period because it either ruins the finish or temper of the material.
You might want to swap the steady rests side to side, right to left, left to right. This will place the flat portion right at the wheel.
ditto , I thought, what the hell ?
Never reverse the polarity of the grinder's motor. The threads are made so that it tightens the wheel as the wheel spins. If you reverse the polarity it will losen the wheels.
There is no reversing of polarity here...
I see very many grinder/ sharpener vids where you turn it around, as is mine, but that's just dedicated rigs for sharpening, usually for the mdf wheels, not general rough grinding. I put a big directional arrow on top in case I forget, and the first thing I do with grinders is toss the view shield, hang a good pair of safety glasses nearby with a cloth draped over them to keep shop dust off.
I use mine mainly for sharpening or very light grinding.
3/4 of the video is an over-explication of your issue and the solution, and in the end you do it all in a rush, and ends good, for your needs at least. I like your style.
Excellent low priced solution! If you look at expensive grinding systems like Kaiten Toishi or Tormek this is similar. Nobody's saying they are dangerous. Only thing missing is the water.
Thank you!
Great tips. Thanks
I’ve been doing this for 50 years. Number one the tool guide is too for from the wheel. Please do not do any of this. This is not how to use this tool.
Done mine but added a strop to the other side
This is NOT a good idea! Please check some information from a reputable source if you do not believe me! 1. Do NOT wear gloves .... they can snag and will then drag your hand into the grinder at a frightening speed (broken bones will be the least of your problems then) 2. The grind direction is downwards for good reason ... The sharp edge you want will have burrs on it if you go the other way and the edge will tend to bevel over! Sharpening towards the work will leave a clean edge! 3. If you hold your work at the top (wheel going away from you) the kinetic energy is dragging the work into the wheel and you will struggle to hold it steady. Also if it does drag your reflex will be to push away against the wheel ... NOT Good! 4. The thin perspex is designed to deflect any sparks away from your face, NOT to provide a little window to look through! Why would a few sparks hitting you on the body (I assume you would be wearing clothing) affect you? 6. If you look up "Grinders Nose" you will see why inhaling any of the crud thrown out by a grinder is not conducive to long life! 8 out of 10 for trying though! Please note I am not having a go at you .... just trying to convince you to get more information and revise your work practice!
Re invented the wheel, I love it❤️❤️❤️
You have got the tool rests the wrong way swap them round so that the square flat edge is up the the wheel. The angled side of the rest is to help you sharpen drill bits.
Hope this helps you progress your idea and solve your problems.
Let me know.
Regards
Chris and a dog called Mo.
Just purchased one of these super happy with it £19.98👍 will be changing to a finer wheel and mybe a wire wheel at some point .... great for the price tho
JC! I inherited my bench grinder from my father, it must be at least 25yo -possibly 35; and IT'S EXACTLY THE SAME!
Just the color...
great mod! I'll do it
thanks mister. but l bought a jooltool to sharpen tools , drills, etc.. Very super cool tools of texas has safety for drill bits too.
For sharpening, look into a low speed grinder or one with a variable speed controller. 1700 to 1800 RPM is a low speed grinder. For knife edges, lower speeds are best to preserve the temper.
i think the only time to run a grinder in reverse is when you modify them to become a polisher sharpening is best done on a sanding belt
les truth he defeated the purpose of the grinder its no longer a grinder but now a polisher
Me parece interesante la posibilidad de cambiar el sentido de rotación y el cambio de la posición del área sin protección "para desbastar con las piedras", esto abre posibilidades para muchos que no sentimos que la posición predeterminada por el fabricante sea la mas cómoda para algunos trabajos. Por otra parte seria bueno implementar un regulador de velocidad a tu maquinaria, dado que en el caso de afilar se necesitan bajas revoluciones para no sobre-calentar y/o quemar el metal, ademas de ayudar en la seguridad con un equipo que no se esta usando exactamente como lo indica su fabricante. También existen discos de resina de nailon que no sobre-calientan las superficies metálicas a afilar y disponibles hasta en grano #3000, lo que permite afilados supremos.👍
That opening in the wheel gaurd where the plastic viser is attached.. that opening needs something to block an object from entering it. It's gonna act like a gun with barrel bent tword you.
When I saw this I had just bought my first grinder and now I realize why this method is dangerous.
This configuration.... The wheel gaurds are gonna act like a pitsol barrel.
Objects that leave your hand MAY hit the wall... But smaller objects will go down into the wheel gaurds travel around and shoot out closest to you.
no, it was actually like that when new, with the top of the wheels facing towards you, as well as all the sparks! The guards have now also been turned forward so that the exit is beyond your chin.
on one axle the friction wheels rotate in two directions,one down the other up :(~£
I wear gloves when using my dremel, as well as hang it securely. At least, when using a cut off wheel on it, as it slipped thru my ungloved grip and cut right into my knuckle instantly. On a bench grinder I can see why you'd want to keep your hands bare. Or maybe cut the fingers off some gloves and use just the finger tips of the glove, thus they can easily come off.
There are dedicated gloves for this type of work that are thin and snug yet provide good grip with rubber fingertips and no loose fabric.
Nice 👍
What you have done is made a polishing machine, no longer a grinder. Very useful for reworking and sharpening things like carving tools, especially gouges. You should rethink the process of grinding though, as others have pointed out.
Did not buy this to grind, but to sharpen blades as you said.
One of the better entertaining set of comments here. That guy, yes, is an example of an anti-genius I agree. But most of the comments here are really funny because they attempt to be an educational but hardly are.
I am almost sure that the author of this video got a designer's job at some renown bench grinder production plant immediately after the release of this video and made millions. We will have from now on the redesigned bench grinders. :This is how metal industry is being revolutionised right in front of our eyes. -)
🤣
anti-genius? It works for me and I am still alive and in one piece, no injuries from this, sorry to disappoint you. It was never meant as a show-off to earn millions mate, just a tip for those who felt uncomfortable at the original setup. Or did I hurt your metal-worker's feelings?
Thumbs up. I was reading the comments and some say that stones break and shatter and would hurt you. But the motion is away from you unlike the original which will throw the broken stones into your stomach area. The only concern is if any lose clothing got caught, but my grinder as soon as you put any load on it slows and stalls. They just do not have the power. I like what you did and will do it to mine. All rotary tools are dangerous and what you did looks to me to be an improvement. I do not trust the plastic guards anyway and would wear a face visor.
Dumb, man, really dumb!!
The way this is set up.... How he is grinding... If a small object is pulled from his hand it's going inside the wheel gaurd and it's gonna reverse direction and come out the end where his tool rest is.
The regular way of grinding pinches your work peice between the wheel and tool rest almost shearing.
The plastic gaurd is only ment for small dust. Usually a heavier metal gaurd is attached with the plastic one so that if any object traveled along the inside of the gaurds that additional gaurd will stop it.
On his, he don't have a gaurd where and object could shoot from... It's his tool rest which is angled to act as a reflector directing the metal at his face..
His main concern is SPARKS... But Sparks aren't the hazard. It's wheel explosion and objects pulled from your hand entering the gaurd traveling around it and shooting out the end closeat to his face
Think it’s a wet stone grinder you need. Basic Bench grinders have been like this since I was a lad starting my apprenticeship. Also the rests are the wrong way around, and should be 90 deg to the wheel.
I use this to sharpen some blades.
"I suggest you wear gloves"
You never wear gloves when using rotary tools, they can get snagged and break your fingers.
Wow, that is a dangerous statement! Using properly fitting gloves protects your hands and fingers from abrasion and heat, not to mention a barrier that sacrifices leather instead of fingers! I have had a polishing wheel grab my gloved fingertip when I was polishing metal, and it was a real wake-up call! I was fortunate that it was my glove that had gotten caught instead of my bare finger. It sure made me aware of my technique when holding small pieces of metal when polishing.
SaucyTreasures Gloves can aid in protection from abrasions however, if an accident does happen and your gloved hand gets caught somehow in a powerful rotary tool, it can remove the glove, along with skin, bone or worse yet, half your arm. It is acceptable to wear gloves when your hands are well clear of the wheel (6 inches or more) and never get closer, however is ill advised and frankly unsafe to wear gloves when holding a small part to the grinder. Never wear gloves when a wire wheel is mounted on your grinder. The same goes for working with a lathe. No long sleeves, gloves or neck ties. An anvil might fall on your head.
sorry but I insist on wearing gloves and a neck tie whenever I'm grinding...
i used to be a metal polisher, we had the biggest bench grinder i've ever seen for polishing and i slipped off the polishing wheel whilst polishing a rocker cover, i was wearing gloves and as soon as my glove hit the wheel it grabbed it, ripping the glove off my hand whilst taking my hand through the polisher and polished a 40mm line from my fingers, half way up my forearm! It was one of the most painful few weeks of my life so now i don't wear gloves when using any sort of bench grinders!
How was the finish?
I'm getting a bit tired of my matte arms.
The sparks go down and if you let go of the knife, it won’t shoot up into the air but instead go down
well actually it would go on me and my feet, so that's why I changed it so it would go away from me at the rear of the tool.
@@bustedcaps3394 haha, took you 3 years to reply. I don’t remember why I commented that as I never really comment. Weird reading old comments.
What happens if your stone explodes?
It blows out backwards toward the wall.
It's not just sparks. Stone wheels can explode (either due to operator error, or to a faulty wheel), and it would be best if the flying shrapnel did not hit you in the FACE. The little Plexi shields seem a poor defense against such an occurrence.
The whole point of this exercise was precisely to have the wheel direction NOT facing your face...
Shields?guards in same place why take the guards?wheels off to change pedestal. No criticism here just curious about complete disassembly. And understand about ccw rotation. Don't like sparks in my face or arms either. thanks.
Can you change brown and blu wires around? To run it opposite way?
No polarity is changed, only the base.
I'd hate to see this man do a demo explaining a chainsaw!!
Dave M lol
ahh don't worry I don't use chainsaws only firearms... OK?
5:17 Wrong plates installation. You should swap left and right's.Bevel should be on yourself.
Cant believe I watched this video 😔
In this configuration... The top opening and opening closest the tool rest have no gaurds to protect from objects entering the wheel gaurd.
Eccentially acting as a pistol with the barrel pointed at you.
Actually the barrel is pointed towards the wall.
I can understand why you have a band aid on your finger.
You assembled it,, wrong son, I think you need schooling. The rest must always be 90 degrees to the stone.
did you bother to watch video or did you just go by the thumbnail, mister?
Sorry you got the method of sharpening a knife backwards. You Do grind into the edge for the best result.
i think this is a wind-up if not how have you still got all your fingers and what if someone else worked on your grinder :-(
Yes I still have all my fingers thank you - oh and only I work on this grinder no worries
GLOVES...with a rotational tool????? D . U . M . B
Edit to add...then I noticed he's working with long sleeves. Genius.
The long sleeves were worn also for the video, but even so, what would exactly be the problem?
i hope no body watch this video, this guy is totaly crazy !!!
Yes I just got out from a mad house now they are running after me again, help me... FU
👌👌👌
You are not using the grinder correctly. However, I can agree with some of your points
I applaud you for making a video, but I fail to see why you didn't follow the instructions properly when assembling your grinder. Following that, I could have recommended going on Google or UA-cam for instruction on how to safely use a grinder.
Instead, you used it a couple of times, scuffed your finger, had no clue what you were doing, decided you knew better than the manufacturers, modified your machine, and put out a video for others to follow your unsafe practice.
Your video should simply have stated, "Please follow any and all manufacturer stated instructions when using power tools!"
Sorry to disappoint you but I didn't scuff my fingers, I did follow the assembly instructions but then I thought about a way to avoid sparks and debris flying in my face, did you actually watch the video or just wanted to stir up some shit?
@@bustedcaps3394it took you 4 years to reply, because you were butt-hurt over my comment? Seriously?
The bench grinder is not designed for precision use. It can easily sharpen knives, but don't expect a fine edge... especially on an 60 grit wheel. Your statement about needing to protect eyes... that's what the plastic shields were for. If your issue is the sparks coming at you... wear something long sleeved, and not easily flammable. The issue is the way you were using it. If your preference is for the machine to grind on the "pull" as opposed to pushing into the wheel, that's your choice; but if the thing you are grinding gets pulled from your grip and jams in the wheel guard, you stand a chance of breaking the motor, or exploding the grinding stone which you already pointed out may have unseen flaws. Heaven forbid your finger gets pulled into the wheel guard. You push into the wheel to grind as a safety precaution, rather than risking things catching & and being pulled by the wheel.
Have you considered that if you aren't comfortable using the machine as designed, then it's not the right tool for you, or the job?
@@The_Shiny_Red_Dingus_of_Mingus I hadn't checked the channel for 4 years, that's why. And don't give me lessons of superiority, you said pull or push was my choice, things can get caught whichever way the wheel is turning, the way it is works for my basic sharpening with no issues.
@@bustedcaps3394 And only one of those methods is safe. Continue to do as you will, but you might want to preface your videos with, "Dont try this at home," or someone could lose a finger by following your advice.
There's a very good reason why whetstones, Tormeks, bench grinders, belt grinders, all grind by pushing into a surface that is rotating towards the item being ground. It's because it's safer.
I'm glad you've found a way that works for you, but I sincerely hope that someone new to powertools doesn't get hurt by copying you.
@@The_Shiny_Red_Dingus_of_Mingus At the text introduction I do say that any modification of one's tools is at the owner's risk.
The tool rest here is angled in such a way that it direct any object coming out twords you... Remember the top of the wheel is traveling away from you but the bottom is traveling tword you.
Between the wheel and interior of the gaurds will act like a gun barrel taking objects away from you, down into the gaurd, changing direction and coming out your tool rest end.
read above, the guard is shifted forward so the exit is beyond the chin.
HI purchased the Grinder and the wheel did the modification looks good (you are the man)
Hey, brilliant! Good on you, and thanks for trusting us. Let us know how it works out for you. I used the grinder myself the other day and it works so much better like this, it's much safer and easier to use. I was able to effectively turn a bar of copper into a small blade in a short time, and all the dust was at the back of the grinder rather than on my clothes!
DONT DO IT! YOU WILL HURT YOURSELF STONES EXPLODE
Busted Caps
Sorry I fell asleep, what did you say again
Warning if you watch this don’t look and also stick something in your ears and you’ll be fine. Thanks
Very clever idea I have only one reservation what would happen if the grinding wheel exploded as they sometimes do it could blow past those flimsy eye guards directly into the operators face. Would you not recommend thicker eye guards of possibly 1/4 inch thick polycarbonate securely mounted on angle iron bracket just a thought.......
The motion of the wheel is going away from you unlike the original which is moving towards you. If a wheel break the original would throw pieces into your stomach area where as his adjustment would throw them away from you.
Nothing he has said in this video is in anyway clever. Everything he has suggested or said in this video will put the operator in danger. The information contained in this video is so dangerous in fact, that I am shocked that UA-cam has allowed it to remain.
Rob C
I have to eat my words... The Sparks in his configuration do travel away from him but if a small object gets pulled from his hand...it's gonna shoot down into the gaurds and turn DIRECTION twords him. Not safe.
@@tKetcham1 well I am still here, dear chap, all in one piece, alive and no injuries... So, so sorry to disappoint you.
@@k3ith29 As I have explained in the video and many times in comments, the guard is NOT facing the operator but higher more forward - unless the operator is stupid enough to lean with his face entirely on the wheel....
I think you've got some good points but to be honest, if you're gonna do that, why use the guards at all...they're not doing much! If anything, they've now become the hazard and don't seem to serve much purpose anymore and are just getting in the way. Not that I'm saying 'remove the guards'....just an observation on being a little less unsafe.
Thank you but I'd rather something was there to stop fragments and sparks from flying all over the place...😁
Honestly, please take this video down. Your suggestions are well-intentioned and clever, but are based on misconceptions about how to use it and actually make the grinder vastly more dangerous. You have assembled the grinder incorrectly from the start, intend to use the grinder incorrectly (when sharpening a knife, the cutting edge should be facing the oncoming surface - you then know you have ground to the edge when you see hints of sparks on the very top edge) and you give incorrect safety advice.
Please, remove this video.
24 minutes, 14 min of rubbish 10 min of reasonable info
This video is junk waste of time
10 minute of rubbish, 14 minutes of homeowner reasoning to DO rubbish.
@@chrisgriffith1573 I have actually done what I needed to do, sorry to disappoint you testa di cazzo, but why did you watch the video then? Or did you really?
I suggest you learn how to use a grinder propelry before offer advice on how to modify or use them on youtube! The advice that you are giving is dangerous
You DID GOOD, practical......... others don't know what they're commenting about.
Venancio Vasallo
The inner wheel gaurds have 6 holes and 3 screws. IT IS MEANT TO BE ABLE TO ADJUST THE GAURDS FACING UP. OTHER WISE MANUFACTURER WOULDNT OF PUT EXTRA SCREW HOLES IF IT WAS HUGE SAFETY CONCERN.
Chas P
I'm eating my words. This is a dangerous way to use a grinder.
I suggest you learn how to spell properly
A grinder like this is not meant for sharpening knives , no instructions ? if he is savy enough to make a video he should be bright enough to watch a few .
I've got this exact grinder and it does say on the box it can be used to sharpen tools haha
Did I miss something? The threads on the shaft are machined so that when the wheels are spinning towards the operator the spinning force tightens the nut. When you reverse the spin that will loosen the nut. If that nut and wheel unwind themselves off the shaft you will have an experience.
no spin is reversed, no polarity is changed, only the base is turned 180° and the guards moved accordingly.
Obviously never been on an abrasive wheels course
UA-cam, I know that posting is old but ! Take this stupid dangerous video down, Check the comments from sensible people.
This gentlemen has know Idea what a bench grinder is used for.
well it seems you have "know" idea how to spell for a start!
I have wondered if there was an easy way to "reverse" the direction on a bench grinder, I never thought that the base would be that easy to remove and turn. Thank you for giving me the nudge I needed to go ahead and flip my grinder around. One caveat though, make sure to remove the spark guard, it works in the complete opposite when the grinder is flipped around! Ooops! LOL
Hey, glad you got the right inspiration! I am not sure what you mean with the "spark guard", if you are referring to the clear plastic shields, you have to mount them as in the video (notice the wheel guard has been reversed), that will stop any spark from reaching your face if needed. I actually have never had any spark coming towards me, since the turning direction of the wheel makes everything go away from me....
The grinder is specifically meant to spin in that direction because it's safer and provides a sharper piece I urge you to do more research on using a bench grinder because this guy doesn't understand what he is talking about and doesn't know what he is doing
I think your tool rests are on backwards, that "kick down" should not be against the wheel.
If the tool rests are the other way around, you can set them up at 90 degrees (or any other angle) without a "v" formed by the "kick down" and wheel, which can jam your workpiece if it's small enough or rolls over into the "v".
Jeff NME
I think his tool rests are on correctly... But they were never close enough to the wheel.
Everyone is talking about how dumb and dangerous this is, I agree. My point is this; did you see how jacked up the blade on that knife was after he was finished? Yeah, it might be sharp, but he ruined the face and angle degree of the
blade.
Do I care? It is sharper, and I don't care about the finish.
3years ago this was posted, genuine wondering how many fingers this blokes got left.
All fingers still here mate, whole and fully functional, do you need a demonstration?
It is too dangerous as he didn't swap the rotor around, the left hand thread on left hand wheel can get loose when doing the grinding which applied lot of pressure. Dangerous!!!!
Get a belt sander for sharpening knives.You can easily change the belt from course to fine to grind a knife blade or to sharpen one! The grinder is designed properly, please learn how to use it as designed. your modification can be dangerous!
thank you, I got this for £20 and it works for me, cheers.
I can still see hes talking during the fast forward portion of the build even tho he knows no one will be listening to him he cant help himself but bleh bluh blahhhhh
Unfortunately one of those videos that should never have been made. He has very little understanding of most things he is giving advice on
Gotta be a spoof.
WTF? Are you from "Down Under"? You are doing thing backwards. You ALWAYS grind from the edge when you are sharpening. If you are grinding towards the edge, the metal rolls over the edge and makes it really dull or takes a lot of honing.
CPUDOCTHE1 he's British not Aussie. We know how to use grinders down here.
ikilltrees666
His biggest safety concern is SPARKS. However those are a minor safety concern. Objects pulled from the hand and taken down through one end of the gaurd and out the other is the bigger concern.
The opening of his wheel gaurd near where the plastic lense is attached..that opening needs blocked off.
Things will be pulled away from him, go down into the gaurd travel around changing direction and coming out where his tool rest is.
At first I didn't immediately catch the safety concern. Now I do.
That tool rest is gonna direct any object pulled into the gaurds directly tword his face
Probably not a screw driver but something smaller most deffinently will enter the opening of the wheel gaurd that is away from him. that opening needs a thick peice tightly abutted against the wheel to prevent anything from traveling the wheel gaurd and coming out the end the tool rest is attached.
The angle of the tool rest will most deffinently direct and object your way.
ikilltrees666
The wheel gaurd chamber will act like a gun barrel that is bend tword the user.
k3ith29 Ahh okay mate, thanks for the info.
@@ikilltrees666 He's based in the UK but that accent sure is foreign.
>
Please please anybody watching this video DO NOT DO as this chap is doing, it`s totally wrong in every way, please for your own safety
He is trying to get this tool to do what it was not meant to do. You don't sharpen knives on this type of grinder. While you can some what convert it as he is striving for to sharpen knives then that's all you can pretty much do but this is not safe for general metal grinding. He really needs to learn how to grind properly.
I easily sharpen blades on this, it works for me, thanks.
never use glowes on grinder!! it is dangerous. goggles are must, glowes no go.!!!
i was workin as a knife sharpener for a few years and i have to tell you that your way of sharpening knifes is as wrong as can be the wheels are to turn towards the edge and NOT away from it like you are saying
ohh, how many times do I have to say I prefer not to have sparks flying towards me? That's why I did the modification...
I got a cheap grinder set up according to the manufacturer and it works great and is pretty safe as it has a few additional thick metal gaurds that attach to the wheel gaurds.
I may make a video explaining why the traditional method is more safe then this.
He's got wheel gaurds but wheel gaurds have attachments of thicker steel that attach to the top opening of the wheel gaurd along with the plastic viser. Preventing objects from being taken down into the gaurd.
The tool rest should be 90 degrees closest to the wheel as possible preventing any thing from being pulled down into the gaurd.
This video needs to be taken down. This will get somebody hurt
oooh, call the police
The only time you reverse the rotation of grinder wheels is if you plan to use paper wheels for knife sharping using grit on one wheel and wax on the other for polishing..Never reverse a stone wheel it is to dangerous. It is about the same thing as driving without using your seat belt..Then it is to little to late. These high speed grinder are nothing to fool with, fingers and eyes are non expendables.
youtube channel: jooltool, she has great channel. l can polish & do drill bits like a pro along with bench grinder too, l use both machines.
smart
Oh dear....
This is incredibly dangerous advice. Please ignore!
Never wear gloves when using a bench grinder. High school shop class, union tradesmen, basic shop safety.
I'm in a college art class using real tools (in personally amazed) and it is the first time I've ever seen "don't use gloves"
Pretty stupid how one can use a tool for 10 years and have to go to an art class to learn the correct way
maybe you should specify which gloves. Boxing gloves, no; dedicated thin anti-scratch gloves with rubber grip, yes. If you like to grate your hands by accidents, then it's your choice, I've seen it happen on people.
April Fools Day is on April 1 not October. If this wasn't dangerous it would make great comedy. Are you planning on any household wiring videos? How about welding, perhaps that's one for the future?
Actually I have done a lot of wiring and solderingin my life, all good, thanks mate, have a better one.
Never wear gloves on rotating machinery. I know they protect your hands from things. Still don't. If you want to know why, go to google images, and search "degloving".
you should do an NPTC abrasive wheels course then try and teach about them, your doing dangerous things and fighting against the way your meant to use this. if you want a whetstone grinder, buy one! not dangerously adapt a cheap 90 degree one to something it is not.
This bloke hasn't got a clue. Very risky practice.
oh yes I haven't got a clue, everything happened by pure chance, I admit it.
please remove this video, you are going to give some poor fool the encouragement he needs to hurt himself with bad information.
NEVER wear gloves with a bench grinder
YOUR GOING TO LOOSE YOUR FINGERS MATE
no still all there, sorry
uk has legastraion on grinding wheels because they are dangers in the wrong hand. this should be taken down is not safe !!! please take this down .if you want to shaped knives use a wet wheel which run slow in water you will get a very sharp edge .
Ignore this guy. Wrong set up, bad mods and generally clueless
ah no you're wrong, I'm TOTALLY clueless, I can't even remember my name! .I.
Please don't do it,put it back to spec or you will get hurt.
I haven't so far, disappointed? Or maybe you didn't quite watch the video?
The bench GRINDER is for, well, of all things, GRINDING. Not sharpening. You can sharpen things roughly, but honing a blade is for a much more precise set of operations. You may think you are doing something smarter, but for a lack of experience with the machine, and with any type of knowledge for sharpening knives vs edges. I'd NEVER take a J.H. Henckels to a bench grinder, or even a stone. Just insane. What you are using it for may feel better and more comfortable, but it is not safer and not the best way to treat any knife.
All I needed was something cheap to do some light sharpening amongst other things. I really don't give a flying monkey about the finish, and it has been safer for me with sparks going away from me rather than towards me.
@@bustedcaps3394 LOL, Took you 3 years to respond?? You are more silly than I thought. I hope you like the first time you catch a burr, and that blade goes right into your hand...
Damn !This guy talks to much !!!
yes, don't listen to him!
I think you’ve bought them wrong tool for your needs,you’ve also made a world recognised design dangerous,as for sharpening knives on a grinder? This practice is best avoided,heat destroys the temper of the metal rendering the “knife” useless for any serious work,
strangely they come out sharper, now why's that?
Fail
Dumbest most dangerous use of a benchgrinder I have ever seen. Keep the guard on and angle your tool rest to achieve th desired grind angle.
I don't use this for grinding!!!
@5:37 confirms that you have absolutely NO idea of how to use a bench grinder (and no idea in general).
This video should be taken down for public safety!
Yes I have absolutely no idea in general, completely, I am just a vegetable. Amazingly though, I am still here, my blades are sharp, and my grinder works for me. I even make videos and lots more things, not bad for someone with no idea in general...
@@bustedcaps3394 I’m glad we’re in agreement then.
Not only are you ignorant to recognising unsafe practices, your arrogance makes you even more dangerous.
you didnt put the machine together properly in the first place. so thats why you werent happy with it FOOL.
They sell it like that.
@@VittorioZamparella no they don't.
@@carlmason983 please, read again:
>you didnt put the machine together properly in the first place. so thats why you werent happy with it
and I replied "They sell it like that" meaning that the factory assembly of those tools is so poor that you shouldn't use them without overhauling them as soon as you bring them home.
@@VittorioZamparella factory don't assemble it all. That's why he's assembled it wrong.
I did assemble correct it, mr. FOOL, then I changed it because I didn't like debris and sparks flying in my face, and it worked so well I thought of showing it to other people like you, Mr. FOOL, but it seems you didn't quite get my point, Mr. FOOL!
I see the good and bad here. I do like the improved angle for sharpening and the sparks flying away from you. But, what disturbs me is what happens in case of the wheel breaking apart. When the direction of spin is reversed, you will get the chunks of the grinding wheel in your face, the tool rest doesn't really block the spinning fragments from flying up. You would need to have serious whole body protection to shield yourself.
If there were a way to provide more shielding to deflect the fragments of a failed grinder wheel, I would feel more secure with changing the direction of spin. Having said that, the manufacturers would NEVER stand behind such a manipulation. Be careful with the adaptations.
The guard is turned forward so the exit is not on the operator's face but further away. With the original configuration any debris is actually exiting the guard precisely on the operator's face, how about that?
Please folks, do not do this! I have been using grinders for 30 years and I've never seen or heard such nonsense! This feller seems to be a really nice guy, but he knows nothing. Please follow the standard practices with all machinery. Modifications to machines should only be undertaken by competent professionals with a full knowledge of the machine. Sorry buddy, but this video needs taking down.
Raban A Burr I completely agree. No pinch points. Never a good idea trying to reinvent the wheel. Be safe folks. I've seen more idiots screw there fingers up at work trying to use maintenance shop grinder. Be safe
Raban A Burr
He may be an engineer.
Secondly.. the inner wheel gaurds have six possible holes for mounting it to the machine and only uses 3 screws.
The extra screw holes are there because the manufacturer intended people to be able to face the gaurds upwards.
If it was a huge safety concern there would only be three holes giving no POSSIBILITY of altering it
I am positive the wheel gaurds are meant to either face you or face upwards. The manufacturer would of never put the extra holes in if not.
Raban A Burr
The only reason you don't see many do that is because many don't have a great need to do it, there is absolutely nothing wrong with facing the gaurd opening up. The manufacturer intended that by putting extra unused holes.
Raban A Burr
I have to eat my words.
The more I thought about this the more I realized the safety concern.
In the normal configuration, the idea is to have the tool youre grinding press against the tool rest.
Where the safety sheild is.. mine has an additional sheild to block any metal from being pulled down into the working end, travel through the wheel gaurd and out the top where the sheild is attached.
That plastic sheild isn't to stop big chuncks only dust. An additional thick metal gaurd is attached to the wheel gaurd where the plastic gaurd is and it is abutted next to the wheel.
So should you be grinding a small object and it gets pulled down into the wheel gaurd....it will travel around and come out the top. The additional metal gaurd will block it.
However in this configuration... The way his tool rest is positioned...it won't block an object.
He believes it is safer because Sparks go away from him, but Sparks aren't the major concern.
He believes that all the objects will fly twords the wall.....
However the way he has it, a small peice that he is grinding could be grapped from his hand and taken down in to the wheel gaurd where his plastic lense is attached. He's got nothing blocking that opening.
Thus, a small OBJECT will travel tword the wall and potentially down into the gaurd, travel the interior, reverse direction and shoot out the end where his tool rest is. The tool rest is positioned in such a way that should an object fly from that end.... The tool gaurd will ricochet the object twords your face.
The top of the wheel he is grinding from is traveling away from him, but the bottom of the wheel is traveling tword him.
So objects can shoot from his hand, go down the gaurd through the opening furthest from him, travel around and come out the end closest to him.
Granted a screw driver probably won't go down the gaurd but will hit the wall.
But any other smaller objects that happens to be pulled from his hand may shoot down that opening furthest from him and come out close to him.
This is only my second day studying a bench grinder and abrasive wheels.... So I'm comprehending now why the traditional method is more safe.
thanks for considering me a nice guy but then you say I know nothing and my video is full of nonsense... Did you actually watch it all?