Normal carbide inserts have an edge radius, because that improves surface finish and durability for how they are used on industrial machines - at the cost of needed more power to make the cut. Deliberately changing the insert geometry to a dead sharp edge makes them much more useful on benchtop hobby machines, because that reduces the power needed to make the cut - at the cost of durability and surface finish. That's a great tradeoff for people with small lathes, especially since inserts can then be sharpened many times. (I use a slow speed wet grinder, so I don't have to be concerned with carbide grinding dust or the noise of a dust removal system.)
@@somebodyelse6673 I think by ''edge radius'' you mean nose radius. Not trying to be pedantic, because the actual cutting edge on many carbide inserts also has a slight radius, or a samll flat spot (''honed edge'' is what it's called I think). That not so sharp edge is also done for durability, but also increases the power and rigidity requirements. A dead sharp lapped edge on carbide with a smaller nose radius than on commercial inserts and slow feed can probably leave a great finish and be very durable. Watch Robin Renzetti's video on production work on manual lathe. He used brazed carbide to make all of 420 or so pieces for a job he was doing, and the tool held up for the entire run of parts.
Nice work. I made one of these and put a handful of small magnets in the aluminum disk. It works great to swap out disks and if you catch an edge the disk slides instead of destroying itself.
Lo mejor del video es el final y que le diga al público que con una instalación mucho más precaria se logra el mismo resultado. Dale es un tipo honesto, me recuerda al video del welding cart. Me encanta este canal.
Started sharpening carbide saws in the 70,s , went on to sharpen carbide tools later with diamond wheels. Need a cutter grinder and coolant to do accurately
With our Sunnen sharpener they give you a spray to keep the dust down so you don't breath it in, but it does evaporate and the dust can become air-borne again if disturbed.
That is awesome...I actually use these small diamond wheels from HF, model 69658, and use the tapered wheel in an air die grinder to sharpen my tungstens, and then the larger flat wheel on an arbor in the lathe chuck to dress my brazed carbide...
I can think of a million reasons I want to move to CA., beautiful weather, women and country to name a few. Unfortunately, we both know the reasons I won't. lol
Awesome mate, I’ve learnt something again from you, I’m using carbide at the moment and wasn’t to sure how to go about sharpening until now, thank you very mate, much appreciated, Cheers Matty from Australia
Grinding always comes out better when grinding with the wheel coming down because the work piece is being pushed down into the table Giving the work piece stability while you’re grinding. Really nice machine and great videos. 👍🏻👍🏻👍🏻
Nice project Dale, enjoyed watching this 2 part series all come together thanks for sharing. Also thanks for the heads up on diamond discs have them on order. From Elliot Lake Ontario Canada.
Great grinder, awsome video. Your use of subtitles was highly effective in conveying multiple layers of information simultaneously. 😅 Brightened my day. 🙂
Might think about adding a cool mist or some way to wash swarf away. Put one on mine and it made a world of difference both with cutting ability and wheel life. That's a very nice looking piece you made there. You make lots of good projects and I would watch much more if just a lil' less cloy, but hey everybody is different nothing wrong with that as long as it's not fake or forced.
I didn't think I was going to like it! I Do! & See the benefit of the slow speed! I have use Diamond before but never thought about slowing it down. I was hoping you hit more on the green wheel! Good video! Keep building something cool!
Thanks for a Kicking practical video...Man you ROCK. I just bought a 320 grit diamond cup wheel. I guess it is going to be for hogging only. What speed should I run the 4" 320 grit diamond cup wheel. I hope to mount it to my lathe to use as a tool grinder I grind some crazy stuff by eyeball and would rather use more accurate tooling.
Another wonderful California law! Tell me how will they know? California is certainly not the land of liberty for all. Nice grinder BTW. Came here from Stefan's channel.
Great video. Would it be possible for you to make a video of your past experiences/qualifications? Maybe as an intro video? I'd like to see others do this too.
Great video. I'd love an Accu-Finish but man they are expensive. I found a Leonard Grind-R-Lap a couple months back so I think that is my next project. It needs some work.
Intriguing process & a nifty idea toavoid big bucks for a commercial grinder. For the brazed carbide...how many sharpenings before the overhang of the carbide on the steel substrate is no more? How do you grind back the steel substrate w/o damaging the carbide - or - the carbide gouges the wheel(?) grinding the steel?
Dale, FYI people are leaving California in droves! You came to Cali, what gives? BTW- I've been a Welder/Fabricator for over 45 years and never had the chance to learn machining until now, always wanted to,but have always worked heavy work in the field. Do you have any advice on where to start? I believe I will be building industrial furniture and parts for my motorcycles and cars I do make my own tools and machinery so being able to make parts will make thing move faster and be much more satisfying for sure! BTW- I'm one of those kats leaving SoCal in droves as ASAP!
@@BuildSomthingCool Hi , I have been using 6" lapidary discs for a few years now. I always buy the cheapest ones. I use them on my home made variable speed wood turning lathe with a 6" face place to sharpen wood turning tools (mostly HSS, some high carbon steel, some PM steel and some carbide) regular high carbon steel wood working tools like chisels and plane irons etc and other tools inc carbide. I have yet to run into durability issues. But I dont sharpen all that much carbide, rather mostly HSS, with the exception of the 4" disc I use to sharpen carbide tipped table and chop saw blades. I have also bought the cheapest off shore Diamond hones ( + - 3x7" ) and cut a couple up to make paddle hones. I use those to touch up drill bits and also to sharpen cupped round 10--12 mm carbide inserts that I use for deep hollowing on the wood lathe. I do have a few pretty low quality videos showing what I am talking about. Link here: ruclips.net/user/ralfish2008featured
Can you build (from raw materials) a tool post grinder for a small lathe as economical as possible even recycling something like a treadmill motor thanks
My ears tweaked when you said that, "You destroy the geometry when you sharpen the carbide". I was under the impression that one brings the geometry back on line through the operation of sharpening?
Thank you Dale for your quick response. I have a KK CALAMAR which uses wheels from Accu-Finish and they had once told me to use Windex spray glass cleaner. But I will try paint thinner on both wheels. If you find something better let me know. I only have a 600 grit wheel but I did purchase your 3000 grit wheel today. I'll let you know how this works out for me. Again, thanks Dale
DD, what is rotational speed that you qualify as slow? inches or feet per second? Since a lot of material isn't be removed, what HP motor would suffice?
I made mine from a lil' 40 VDC motor that is prob 1/4 hp and it has more than enough power. For a 6" wheel about 300 rpm is optimal, but you can get away with a little more if you use coolant/lube, which I recommend using regardless to knock down carbide dust and make the wheels last way longer. I use a cheap chinese mist coolant head with water soluble grinding coolant that works well.
There have been people show that on RUclips. Not for production work but as a quick & dirty solution to drilling out broken bolts. Can also be done on a green wheel or any diamond wheel.
I don't know why your lap disks are wearing out. Mine have been going strong for years. With diamond they still feel like day one. Mind you I have them glued down to their backing plate. The diamond doesn't wear really but it can be knocked off. Perhaps a flapping lap disk and vibration are the reason.
old dried silicone (one you use in kitchen,bathroom ,to seal things)works wonders on diamond stone and sandpaper.Old rubber soles of the shoes will work aswell.
No that video was a fast forward video of how you built the grinder . First thing with those cheap carbide tools is chuck them in some solvent to get rid of the paint .
Rent-Seeking The practice of an individual, company, or government attempting to make a profit without making a product, producing wealth, or otherwise contributing to society. ... Rent-seeking behavior is most common when the rent seeker is also a monopoly or has sufficient economic or political power to act as one. The concept was originated by Adam Smith. Anyone question why I left my native state and never looked back? BTW l love your very informative videos.
Dunno who would claim it to cause cancer, but it can cause inflamation and tissue scaring similar to Silicosis, same goes for many other fine particles. But, its everybodies own decision in the private sector, and not something to joke about in my opinion. (even at such slow speeds)
He's in California, in California EVERYTHING causes cancer even electrical tape. Now days it's getting harder and harder to find products without a California cancer causing disclaimer.
@@flatblack39 As much as i like sarcasm, it has its boundaries IMHO, especially in self claimed how to videos. Might be me being extra on the fence since a 17 year old i know watched some "how to use a table saw for beginners" video on YT, which didnt explain any safety like a blade guard, riving knife, or not using gloves while working on the saw. Just sarcastic remarks about not needing them. Guess what, said beginner was now in hospital with a severe kidney bruise.
@@zumbazumba1 Sure he will, he isnt stupid but a bit naive sometimes. He wanted a tablesaw for his birthday and his single mother saved up for it. But without anyone near him being able to show him how to use it (Im an old friend of his mother, but i live over 150km away) he searched for YT videos. IMHO it wasnt necessary that it happend, it could have been avoided if the creators of edjucational videos would at least mention safety in a reasonable fashion relative to beginners, instead of being a sarcastic dick about it like some youtubers i wont name.
Cadmium, Chromium, Cobalt and Nickel= tungsten carbide.And those arent great for your health.While you dont snort it like a al pachino in scarface ,i would recommend buying cheap replacable filter respirator(you would be amazed how much shit simple cotton filter blocks,for 10 $ i bought 3 masks just to see which one fits,add 5$ more and buy filters)-dont be a fool once that dust gets in your lungs it stays in.
boy there really are a lot of stupid comments on this video what's the deal with California no I wouldn't want to live there either the people are kind of weird but that's not what the videos all about
I don’t think there is anybody out in the world more happy to have helped me out than the Build Something Cool guy. Thanks Build Something Cool guy.
I too live in California.. Screw Hollywood. Not only am I watching this out of order but with no ads, double speed and backwards.
It would be worth while to show how the sharpening on the tools works out on say 1018 cold rolled and maybe some 4140..
A before and after would be cool
Maybe I need to make another video. Lets see how many thumb up your comment gets. :-)
Normal carbide inserts have an edge radius, because that improves surface finish and durability for how they are used on industrial machines - at the cost of needed more power to make the cut. Deliberately changing the insert geometry to a dead sharp edge makes them much more useful on benchtop hobby machines, because that reduces the power needed to make the cut - at the cost of durability and surface finish.
That's a great tradeoff for people with small lathes, especially since inserts can then be sharpened many times. (I use a slow speed wet grinder, so I don't have to be concerned with carbide grinding dust or the noise of a dust removal system.)
@@somebodyelse6673 I think by ''edge radius'' you mean nose radius. Not trying to be pedantic, because the actual cutting edge on many carbide inserts also has a slight radius, or a samll flat spot (''honed edge'' is what it's called I think). That not so sharp edge is also done for durability, but also increases the power and rigidity requirements. A dead sharp lapped edge on carbide with a smaller nose radius than on commercial inserts and slow feed can probably leave a great finish and be very durable. Watch Robin Renzetti's video on production work on manual lathe. He used brazed carbide to make all of 420 or so pieces for a job he was doing, and the tool held up for the entire run of parts.
I appreciate the great camera work, positive attitude, and great ideas!
I think the "positivity" is over the top and unecessary.
Nice work.
I made one of these and put a handful of small magnets in the aluminum disk. It works great to swap out disks and if you catch an edge the disk slides instead of destroying itself.
Interesting idea I'll give it a try
Lo mejor del video es el final y que le diga al público que con una instalación mucho más precaria se logra el mismo resultado. Dale es un tipo honesto, me recuerda al video del welding cart. Me encanta este canal.
Great video Dale. Actual proof your grinder isn’t just great looking it works great too.
Started sharpening carbide saws in the 70,s , went on to sharpen carbide tools later with diamond wheels. Need a cutter grinder and coolant to do accurately
With our Sunnen sharpener they give you a spray to keep the dust down so you don't breath it in, but it does evaporate and the dust can become air-borne again if disturbed.
Very well done Dale 👍Thumbs up
Thanks My friend
That is awesome...I actually use these small diamond wheels from HF, model 69658, and use the tapered wheel in an air die grinder to sharpen my tungstens, and then the larger flat wheel on an arbor in the lathe chuck to dress my brazed carbide...
Great idea thanks for sharing:-)
Why anyone would WANT to move to California??? Nice demo on the use of the grinder. Could be a real money saver. Very Cool Build!
Mature Patriot I couldn’t leave fast enough.
I can think of a million reasons I want to move to CA., beautiful weather, women and country to name a few. Unfortunately, we both know the reasons I won't. lol
that seems like a handy tool. I have lots of carbide that could use a sharpening. Thanks Dale
My pleasure:-)
Thanks for sharing, Dale.
I am getting chatter on my finger nail, really useful home shop instrument Dale, cheers and thanks!
Awesome mate, I’ve learnt something again from you, I’m using carbide at the moment and wasn’t to sure how to go about sharpening until now, thank you very mate, much appreciated, Cheers Matty from Australia
Grinding always comes out better when grinding with the wheel coming down because the work piece is being pushed down into the table
Giving the work piece stability while you’re grinding. Really nice machine and great videos. 👍🏻👍🏻👍🏻
Love it!
Great spending the morning with you!
Love your comment :-)
Great video Dale
This looks like a good addition to the shop
Keep up the fight, Dale.
Cool Dale. I’m building one.
Nice project Dale, enjoyed watching this 2 part series all come together thanks for sharing.
Also thanks for the heads up on diamond discs have them on order.
From Elliot Lake Ontario Canada.
Thanks for your comment :-)
Great grinder, awsome video. Your use of subtitles was highly effective in conveying multiple layers of information simultaneously. 😅
Brightened my day. 🙂
Nice video Dale!!! I enjoyed watching!!!
You do things I've never seen anyone do....
Might think about adding a cool mist or some way to wash swarf away. Put one on mine and it made a world of difference both with cutting ability and wheel life. That's a very nice looking piece you made there. You make lots of good projects and I would watch much more if just a lil' less cloy, but hey everybody is different nothing wrong with that as long as it's not fake or forced.
I didn't think I was going to like it! I Do! & See the benefit of the slow speed! I have use Diamond before but never thought about slowing it down. I was hoping you hit more on the green wheel! Good video!
Keep building something cool!
Thanks for your comments:-)
well handy tool Dale, still figuring mine out!
ATB from rainy Kent in England.
Love the "NUT" voice-over correction!
I use the diamond bladed saw blade sharpener from HF. Cuts a clean edge on all my carbide cutters and even the blades.
That's a nice machine though!
That’s awesome! Thanks for putting this video together!
Great job Dale, you make it look too easy!
Thank you very much for this and the previous video, with your permission I am going to copy your design.
Cool. Send me a photo when your done
Great video
Thanks for a Kicking practical video...Man you ROCK. I just bought a 320 grit diamond cup wheel. I guess it is going to be for hogging only. What speed should I run the 4" 320 grit diamond cup wheel. I hope to mount it to my lathe to use as a tool grinder I grind some crazy stuff by eyeball and would rather use more accurate tooling.
Another wonderful California law! Tell me how will they know? California is certainly not the land of liberty for all. Nice grinder BTW. Came here from Stefan's channel.
My thoughts exactly
Great video.
Would it be possible for you to make a video of your past experiences/qualifications? Maybe as an intro video? I'd like to see others do this too.
Hi Dan, I'm self taught. I started doing videos on RUclips because it is been said if you want to learn, teach.:-)
Great video. When are you going to make a video on the Deckel in the backgraound?
Enjoyed Dale!
ATB, Robin
Thanks my friend 😀
Necropost question: where did the shaft and bearings come from? Old drill press?
Great video! Love the California safety warnings. Lol
Great idea looks good
Great video. I'd love an Accu-Finish but man they are expensive. I found a Leonard Grind-R-Lap a couple months back so I think that is my next project. It needs some work.
Yes, accu-finish are crazy expensive. Thats why I made mine.
Intriguing process & a nifty idea toavoid big bucks for a commercial grinder. For the brazed carbide...how many sharpenings before the overhang of the carbide on the steel substrate is no more? How do you grind back the steel substrate w/o damaging the carbide - or - the carbide gouges the wheel(?) grinding the steel?
When you put the radius on the tool turn it 90 degrees and rotate it up so you don’t cut a groove into your wheel
Just messing dale. Love the vids.
Sharpening real big carbide tool bits can take real much time! It's good for small ones though.
благодарю вас
I like the video except I wanted to see more detail of the handy little angle gauge you made. You blew through that pretty quick.
Dale, FYI people are leaving California in droves! You came to Cali, what gives? BTW- I've been a Welder/Fabricator for over 45 years and never had the chance to learn machining until now, always wanted to,but have always worked heavy work in the field. Do you have any advice on where to start? I believe I will be building industrial furniture and parts for my motorcycles and cars I do make my own tools and machinery so being able to make parts will make thing move faster and be much more satisfying for sure!
BTW- I'm one of those kats leaving SoCal in droves as ASAP!
👍👍👍👍 glad I already watched part one , and dont live in California....
Thank you awesome video.
Thanks for the video Dale.
When buying a lapping plate, how will one know the quality before hand? Any suggestions?
The best price I've seen for a disk is $15. if you pay less then that you might get in trouble, but give it a try see what happen, and let me know.
@@BuildSomthingCool Thank you Dale
@@BuildSomthingCool Hi , I have been using 6" lapidary discs for a few years now. I always buy the cheapest ones. I use them on my home made variable speed wood turning lathe with a 6" face place to sharpen wood turning tools (mostly HSS, some high carbon steel, some PM steel and some carbide) regular high carbon steel wood working tools like chisels and plane irons etc and other tools inc carbide. I have yet to run into durability issues. But I dont sharpen all that much carbide, rather mostly HSS, with the exception of the 4" disc I use to sharpen carbide tipped table and chop saw blades. I have also bought the cheapest off shore Diamond hones ( + - 3x7" ) and cut a couple up to make paddle hones. I use those to touch up drill bits and also to sharpen cupped round 10--12 mm carbide inserts that I use for deep hollowing on the wood lathe. I do have a few pretty low quality videos showing what I am talking about. Link here: ruclips.net/user/ralfish2008featured
Can you build (from raw materials) a tool post grinder for a small lathe as economical as possible even recycling something like a treadmill motor thanks
Thank for the video
Scrapper video, please post where to find scrappers they seem to be a rare thing to find when you do that video please?
I have had those butter steel shanks on those cheap carbide bits bend over though and that isn't cool. :-(
Thats because you do real work. So you need real tooling. :)
Excellent video. *Viewing was compliant with all laws of the Great State of California*
I'm glad you obey the California law. I will not have to send the sheriff after you:-)
My ears tweaked when you said that, "You destroy the geometry when you sharpen the carbide". I was under the impression that one brings the geometry back on line through the operation of sharpening?
Didi I miss the Link for the Drive Belt?
🎯
Hi Dale, great video. I noticed the wheel was picking up carbide, how would you clean that off the wheel?
Good Question. I spray paint thinner on it from spay bottle. It works, but it is messy. I hope to find a better way. :-)
Thank you Dale for your quick response. I have a KK CALAMAR which uses wheels from Accu-Finish and they had once told me to use Windex spray glass cleaner. But I will try paint thinner on both wheels. If you find something better let me know. I only have a 600 grit wheel but I did purchase your 3000 grit wheel today. I'll let you know how this works out for me. Again, thanks Dale
Watching the sharpening video first while reloading my 40 round AK magazines.
Dale, what range of RPMs to you call low?
I find some "slow" stone grinders at 1750.
4:46 re : Cancer warning. Evidence also suggests that the only thing that does not cause cancer in rats is tennis.
I love the educational bits on trolls. Always was fascinated by those mythical beings, and everyone is too busy shooing them off :>
Grinding plates called and where you get them?
DD, what is rotational speed that you qualify as slow? inches or feet per second?
Since a lot of material isn't be removed, what HP motor would suffice?
I made mine from a lil' 40 VDC motor that is prob 1/4 hp and it has more than enough power. For a 6" wheel about 300 rpm is optimal, but you can get away with a little more if you use coolant/lube, which I recommend using regardless to knock down carbide dust and make the wheels last way longer. I use a cheap chinese mist coolant head with water soluble grinding coolant that works well.
Heeeey, what if you try sharpening a masonry carbide twist drill to use it on steel?
There have been people show that on RUclips. Not for production work but as a quick & dirty solution to drilling out broken bolts. Can also be done on a green wheel or any diamond wheel.
👍
If you use water for lube the diamond will last longer.
I don't know why your lap disks are wearing out. Mine have been going strong for years. With diamond they still feel like day one. Mind you I have them glued down to their backing plate. The diamond doesn't wear really but it can be knocked off. Perhaps a flapping lap disk and vibration are the reason.
you might want to wet grind your carbide it will make your disks last longer and cut the dust
Hi, I find it unfortunate to use this diamond disc without watering.
old dried silicone (one you use in kitchen,bathroom ,to seal things)works wonders on diamond stone and sandpaper.Old rubber soles of the shoes will work aswell.
Isn't carbide dust pretty toxic?
Try this carbide dust, trolls! It's as good as coke, and a quarter the price! Good sh*t, man!
Hey, Trolls are almost people too!
Hey, California would really be a great state if not for the fruits and nuts.
how can you be sure :-)
Yeah, right up there with Santa Clause, Easter bunnies and tooth fairy.😜
No that video was a fast forward video of how you built the grinder .
First thing with those cheap carbide tools is chuck them in some solvent to get rid of the paint .
Rent-Seeking
The practice of an individual, company, or government attempting to make a profit without making a product, producing wealth, or otherwise contributing to society. ... Rent-seeking behavior is most common when the rent seeker is also a monopoly or has sufficient economic or political power to act as one. The concept was originated by Adam Smith.
Anyone question why I left my native state and never looked back? BTW l love your very informative videos.
….6:45....Sharp Tools, check them, and often....
I suppose he could easily reshape those nails on the diamond wheel so it's no big deal.
Hey! You moved! I need your new address so I can drop by some time...
Oh! Good,I'm legal!
Glad to hear you made across the border LAUGHT OUT LOUD. (The thought police are not going to like my comment).
this one time my cancer got rats and trolls
i spy with my little eye 2 camel back straight edges.
At least he has nine more finger nails to test his carbide, lol.
Hee-hee...😏
Trolls! 😄
That California law is ridiculous.
Thanks for the warning, I'm a troll, I quit.
I don’t give a flying &#@£$ about any #%*& California £@&$ law..... Wait, does that make me a troll?😜😜😜
Dunno who would claim it to cause cancer, but it can cause inflamation and tissue scaring similar to Silicosis, same goes for many other fine particles.
But, its everybodies own decision in the private sector, and not something to joke about in my opinion. (even at such slow speeds)
He's in California, in California EVERYTHING causes cancer even electrical tape. Now days it's getting harder and harder to find products without a California cancer causing disclaimer.
Some folks just dont speak sarcasm.
@@flatblack39 As much as i like sarcasm, it has its boundaries IMHO, especially in self claimed how to videos.
Might be me being extra on the fence since a 17 year old i know watched some "how to use a table saw for beginners" video on YT, which didnt explain any safety like a blade guard, riving knife, or not using gloves while working on the saw. Just sarcastic remarks about not needing them. Guess what, said beginner was now in hospital with a severe kidney bruise.
@@FullMetalFox2 He learned a valuable safety lesson(unless he is super stupid and does same thing twice)that will stay in his head for life !!!
@@zumbazumba1 Sure he will, he isnt stupid but a bit naive sometimes. He wanted a tablesaw for his birthday and his single mother saved up for it. But without anyone near him being able to show him how to use it (Im an old friend of his mother, but i live over 150km away) he searched for YT videos. IMHO it wasnt necessary that it happend, it could have been avoided if the creators of edjucational videos would at least mention safety in a reasonable fashion relative to beginners, instead of being a sarcastic dick about it like some youtubers i wont name.
Cadmium, Chromium, Cobalt and Nickel= tungsten carbide.And those arent great for your health.While you dont snort it like a al pachino in scarface ,i would recommend buying cheap replacable filter respirator(you would be amazed how much shit simple cotton filter blocks,for 10 $ i bought 3 masks just to see which one fits,add 5$ more and buy filters)-dont be a fool once that dust gets in your lungs it stays in.
What's the law if I don't live in Ca?
Its a gray area. Better to be safe than sorry. LAUGHT OUT LOUD
why is it a terrible rush?.....you must remember to breathe!
California is so screwy it wouldn't surprise me if they had a law like that. 😂
boy there really are a lot of stupid comments on this video what's the deal with California no I wouldn't want to live there either the people are kind of weird but that's not what the videos all about
Why in the world would you want to move to libtardville?
I try so hard to ignore the trolls but I just can't.
And he seems like he got good sense. Maybe we need to do an intervention.😜
@@Loebane hard to ignore the trolls when every bridge in libatard land has at least one living under it.
@@tsw199756 If California is "libtardville", then would that make "libtard land" America?
@@Loebane it seems to be trending that way unfortunately.
"Don't buy the cheap ebay discs". "Buy the ones on Amazon 5 bucks more expensive where i can get a cut". Not very ethic is it?
Please buy the cheap one. It’s your money, and when you find out they are shit. Remember what I said, and then send me an apology😜👍😀
So, this is not a grinder at all....but a lapping machine....
Get it straight man.... no such thing as 'slow speed grinding'
Paddy
You really showed him.
Wear a mask…😱