How Surface Grinding Works - Part 1?

Bonus footage! Title says it all, though this is specifically about grinding wheel wear.
FYI, my go-to general purpose wheel is a Norton 5SG.

[@HexenzirkelZuluhed]

I don't get it... you are INTENTIONALLY making those videos SHORTER?? Have you met your audience?

[@udowillkomm1173]

Now some of us have a small attention span...ADHD....maybe, the Pres is looking also...

[@kengamble8595]

Udo Willkomm Not me........ SQUIRREL !! 😆

[@ThisIsAVeryBadIdea]

Methinks a mix is good. Depends on the subject or question. Video length depending on content I think is a hallmark of actually understanding how to present something. ...I think it really means it takes as long as it takes. If he gets away with only a short video, he's fine. If it takes a long video or multiple parts, then it does. It taking as long as it takes means, uh, it takes as much as it should. SCIENCE. WORDS! AHHHH!

[@o11o01]

Thaddeus Jancewicz And somehow I understood you perfectly

[@MrDoboz]

he better don't meet us after this xD

[@dan27052]

I though the raisin jokes were a little fruity, if not dated... other than that, great video!

[@macf4426]

Dan Carpenter Would you prefer he prune them from the script 😀

[@Hagledesperado]

Stop wining., I think they're grape.

[@azyfloof]

I think they add to the currant situation

[@jimleonardson4268]

🙄

[@StanislavG.]

I don't know, I think they were a bit corny

[@thewmonster]

what's this question mark non-sense, Tot? If you made a 48 part grinder series, most of the humans on this thing would watch them back to back with a blank smile on their human faces. i know i would.

[@index7787]

Can confirm

[@evaderknives]

didn't he already do that when he built it? haha it was a few years ago, but still

[@ThisIsAVeryBadIdea]

Humans, yes! With our mouth and eye for seeing and breathing!

[@ThisIsAVeryBadIdea]

I love air! I breath it all of the time!

[@barrybritcher]

That's why I don't watch Alec Steele any more. 500 part build

[@reps]

Smooth nuts are good.

[@TheDanielConsole]

Marco Reps preferably without burn marks

[@johndough8413]

Smooth as eggs.

[@finnsailing69]

lol :D

[@vandyFixer]

Marco Reps That's what she said.

[@chebhou]

Ask Dave chappelle

[@Alitlittlehedgehog]

3 videos in a month!! dont push it tony you might hurt yourself.... I love your content and machining is my bag, baby...

[@davidwright4541]

Not a chance Maxwell Lakritz, he was having some down time next year and came back from the future :-)

[@bigchooch4434]

This video must have been difficult to film and edit as a cat.

[@macf4426]

He's fine as long as Chris doesn't pick up a laser pointer.

[@ThisIsAVeryBadIdea]

ᗰіɢʜѕᴛ ᗩʟʟ ᑕʀᴜᴄᴋіɴɢ ᖴіɢʜᴛʏ Dat lysdexic name

[@macf4426]

Thank you Thaddeus. I wonder if it reads correctly for people who have sexDaily 😀 lol

[@routercnc9517]

It takes ages. He keeps hitting the paws button.

[@macf4426]

routercnc And he has a really bad compulsion to chase the mouse.

[@TonyFleetwood]

thank you for another 2d representation of your 3d world.

[@AlecSteele]

Great video as ever!

[@rossmoffett1342]

Shouldn't you be working?!?!? lmao!! Just kidding take all the time you need man!

[@brunof1996]

Go back to work. We need more videos XD

[@garybaris139]

Alec, have you started doing stuff that are not made of Damascus Steel yet? I started taking a break from your channel when it exhausted everything I could think of being able to be made from Damascus Steel. Don't get me wrong, I loved your channel, just got tired of Damascus Steel. I'll be back in a flash if you've moved on.

[@dvn711]

Alec, when are you and Tony going to collaborate?

[@MichaelJCaboose013]

That moment when your favorite KZbinr is lurking in the comments on another favorite KZbinr's channel. Can't wait to see you in the States!

[@JasonWorksAlot]

Wooooo!! 3 in a week?! Have I died and gone to heaven?!

[@asdomega]

JasonWorksAlot thats exactly what i thought. wooohoo!

[@oldreliable303]

yes, we are dead, or drunk

[@JasonWorksAlot]

oldreliable303 Justin Scott or both! But who cares haha

[@mopoworks7780]

he said that time isnt linear in his garage..

[@chocolateteaspoon]

but we will still be getting the optoacoustic levitation vid, right?

[@cand0]

I need this in my life. If it's not a joke, I'm fairly certain that many megaliths were constructed with a similar technique. Please be real.

[@machinethinking]

Putting tangents into auxiliary videos. /me takes notes

[@TenTries]

Right? Lessons in KZbin by ToT 👌

[@davidbrown8365]

Reading through the comments (which is half the point of watching a TOT video) it seems to be that Tony is liking a lot of the comments.

[@artfx9]

Blue grinding wheels taste like blueberry if you lick them.

[@sayethwe8683]

artfx9 only while they’re spinning. Grinding wheels are designed only to have flavor while spinning. The yellow is lemon, red is cherry, etc.

[@metalpickle]

I'll bet the red one will taste like blood after a while....well i'm guessing all of them will

[@paulaitchison-_-4658]

Ok. I licked mine. Now all I taste is cauterised blood🤪

[@multiHappyHacker]

For some reason soft grinding wheels seem to work wonderfully on super hard parts. They do break down quick, but it doesn't load up.

[@Mentorcase]

Mine don't they taste like silicon carbide, depending on how fresh they are!

[@martinlumber]

Yes, more questions. ‘Grinding Wheel’. You covered the grinding part, but I’m lost about ‘wheel’. Any chance you could cover those in a future video?

[@davidfanner]

I agree, tell us which colours and flavours work with different materials..

[@pekkasaarinen2902]

I'm particularly interested about that square wheel he uses when grinding the square pieces to shape.

[@TheAmpair]

Due to TOT shop time discombobulation, wheels have not been invented yet, So, best hope is for grinding sled runners.

[@leeroy60]

All the different grades/grits and constructions of wheels makes for a veritable rabbit hole that will make your head spin. And how to choose which to use for what materials and such.

[@butsukete1806]

If you think wheels are tricky, just wait til you get to axles.

[@ENCHANTMEN_]

For grinding, I recommend finding the easiest enemies to defeat who also yield the most experience. In some cases, I'll actually go for lower yield enemies who are easier to defeat so that I can multitask or watch videos while I'm levelling up. It's a matter of preference, though.

[@TheCalgarydoug]

I used to pick up semi trailer loads at Norton in the mid 60s and over the shippers desk was a sign that read, "illegitimate non carborundum, don't let the bastards grind you down.

[@AimlessMoto]

I never knew I needed this video until Tony uploaded it.

[@user-neo71665]

All I hear is meow meow meow

[@Clough42]

I am watching your video on exactly that phone in exactly that case.

[@martianmartini505]

I love Spigen phone cases! Thin, light and simple.

[@warrantyvoid100]

What is the phone? HTC?

[@csepisaco95]

I would say Galaxy S8.

[@Clough42]

Sándor Cseppentő Correct. Galaxy S8 in a Spigen case. Probably the most breakable phone ever made, but the case protects it very well without adding bulk. I dropped mine down the steep concrete steps at a hockey game, and it just bounced. Several times.

[@csepisaco95]

I have an S7 in an import TPU case, however I don't want to know what it feels like when you drop it :D. Also there's something wrong with the front glass, as it scratches very easily.

[@Skydiverjoe2871]

I totally understand about the great variety of grinding wheels, I work in the R&D section the makes grinding wheels for a very large company. It is daunting how many there are

[@slamdvw]

You should publish a "gag reel" on occasion, would probably be a hoot to watch.

[@melgross]

slamdvw I thought these were all gag reels.

[@bartsmykla]

So many videos lately. :-) Really nice!

[@Wobblybob2004]

The wheel is going the right way, you have your machine facing the wrong way! Try turning it to face the wall then give it the old reach around. you'll both be glad you did!

[@SolidRockMachineShopInc]

Hi Tony, Have you ever tried Radiac grinding wheels? They make a nice 46 grit ruby wheel with open structure (porous) that works very well. The nice thing about this wheel is that it cuts very free and very little heat build up. Steve

[@Guysm1l3y]

Wait... Was that tangent line in any way a pun about how the dressing tool touches the grinding wheel?

[@jimc3688]

ATAN^-1

[@geraldgepes]

A video on selecting the right grit, bond, hardness and openness (I cannot remember what that's called) would go a long way in helping a lot of people. I know too many bench grinders are getting leaned on regularly because they have those concrete wheels they get shipped with on them. Any who, the coffee must be good this week man! Thanks for the threepeat!

[@SquareTheBagel]

Tony slow down, your gonna hurt yourself at this rate. 😂😉 Great video

[@paulanderson2803]

Don't worry cats have 9 lives.

[@sambishop3963]

I do wish screws dried quicker

[@TheAmpair]

They will if you have a power screwdrier

[@HepauDK]

Ah, the planar grinder. Brings back memories from my apprenticeship as a fitter back in the mid-90's. One time I was tasket with making a calibration tool for a cnc machine. It didn't matter if it was 82, 81 or 80mm, it just had to be bang on. First try at 82mm, I ended up at 81.999, so I had to take off those 0.999mm. Another time, one of the other apprentices forgot to run the stone dry before turning the grinder off. When he started it up the following morning, the stone shattered and pieces from it flew right past the bench grinder. Luckily noone was using it or they would have ben hit in the head. Oh, and the shattered stone made dents in the magnetic table so we had to plane that too...

[@TomHaroldArt]

So to a guy who doesn't know any better, am I guessing that "running the stone dry" is done after using some kind of coolant with it, and it is done to essentially "wring out" the wheel of absorbed coolant, because if said coolant is not wrung out, it settles overnight at the lower portion of the stone, and when you fire it up, all that coolant weight creates an out-of-balance situation, which immediately goes boom? Did I get that right?

[@captcarlos]

Unfortunately for some you got that perfectly right. Those days there was no such thing as 'soft start'.. Zero to oh my g..... In a nano second!

[@melgross]

TomHaroldArt exactly.

[@Ant0ine64]

La raisin d'être 😂🥖🇫🇷 I prefer raisin in form of wine 🍷

[@stephen1r2]

a Firm opinion I C.

[@Mishn0]

You should try raisin in the form of beer: www.dogfish.com/brewery/beer/raison-detre

[@tomholmez12]

Wow 3 in 1 week, thankyou lord tony

[@Bullorg]

I usually dont comment on videos on YT but I have to comment on a Tony video at some point. When I see a This Old Tony vid has uploaded it more or less makes my day. You are amazing keep up the good work!

[@samiant5199]

*gets tenths indicator out* - "everything is crooked rick"

[@geraldgepes]

No, no, no! Reality is poison!

[@plasmahead2]

Lambs to the cosmic slaughter!!!

[@samiant5199]

Always loved to be pinned by TOT thanks you for the vids

[@JustInTime0525]

Hopefully PART 2 comes out this year.... :D

[@ThePolishPlatypus]

Thank you Tony! And you should open a crowdfunding sorce so we can at least pay for materials.

[@dankeebler6171]

I've seen chunks of crashed grinding wheels break cement block. I saw a guy leave a big screw driver on a mag Chuck and crash a four piece Blanchard grinder wheel.

[@zacharysmith2983]

When you make this many videos this fast, It makes me nervous that it might be 2 months before I see another :,(

[@kamil19951]

Nice video Tony, but you are dressing the wheel wrong way. if you have the angle on the dresser facing column you need to be going outwards with dressing, that prolongs life of diamond,you downfeed on the diamond only one way. Also turning dresser in the holder frequently helps to sort of wear it to a point if you know what i mean. if you side wheel, it's nice to dress the wheel with handheld diamond, so you are only cutting with tiny edge on the outside of the wheel. You shouldn't side wheel with full face.

[@FedericoCatalan]

I've been kind of thrown into the machining world out of necessity, I had theoretical knowledge in machining as a mold CAD designer but no actual cutting oil in my hands. I have my good 15 years of "experience" now, but having learned on my own what I could, I'm very grateful of the tangents in your videos... The sheer amount of learning I squeeze out of them might surprise you. Thank you This Old Theacher for them.

[@Handmadeextreme]

Superb. Great tip about working on the trailing side of the wheel, makes perfect sense. Moved a Jones and Shipman 540 into my shop this morning.

[@shortribslongbow5312]

Another great video what else could be said? Thanks :o)

[@PandaMan02]

when you dress your wheel, do you use natural or synthetic fabrics?

[@Chaos------]

So for high precision applications, how do you compensate for the gradual erosion of the grinding media?

[@xoxo2008oxox]

My teeth at night do this very well.

[@rogeliolsborte2405]

xoxo2008oxox

[@RobertSzasz]

Surface grinding is for folks who like statistics and other black magic. I tried figuring a chip load per... grain in order to understand it worked? Then realized grain size, face angle and even the damn diameter of the wheel is not only probabilistic but changing at every moment you're actually grinding. 😬💥

[@xxxyyy7252]

Yes it's a form of art to some extent. It's different than drilling, turning, milling... Different but similar at the same time: it's a machining too. You should mind the size (dimensions) and shape (geometry) of your part, plus heat input (distortion). Many folks get it wrong, they think only about surface appearance. When it's shiny it's perfect they think. Wrong! You can screw-up geometry by improper grinding (but surface will look "nice").

[@jadenpeterson4881]

The onslaught of vidjeos from AvE, CodysLab, and Tony this week has given me great pleasure. Only problem is, my face is stuck and I can’t fix it...

[@StefanGotteswinter]

Are you happy with the Norton 5SG? I thought (heard) that they need quite a bit of pressure (And power on the spindle..) to work/break down properly.

[@ThisOldTony]

Can't say I've notice any big difference in the types of (small) parts I usually see. I started out with regular AO wheels, they worked fine, but I found the seeded gel wheels a lot more forgiving. This is a 6x12 *manual* grinder... when I start getting past 6x3 my arm gets tired and my traverse speed take a sudden nose dive. You have a general purpose wheel you like / recommend?

[@perw12345]

Three videos in less than a week, Tony. Are you trying to spoil us?

[@Xraller]

You're just grinding my gears now.....

[@StNuttall]

[@macf4426]

Hey, no need to get abrasive 😀

[@Codeaholic1]

Nah thats ClickSpring. He'll grind them one tooth at a time.

[@olekaarvaag9405]

The Optoacoustic levitation device I can get behind, I mean it makes sense, but "smell yah later"? How are you teleporting molecules from not just me specifically, but every other viewer as well? That's just ridiculous, come on. I was about to say the magchuck could be the subject of a video on its own but when googling for magchuck I realized you already had. Link if anybody else want to check it out; kzbin.info/www/bejne/fnKxemuIorShmNE

[@tommasofossati5123]

Vacuum clean the grinding dust, especially when dressing the wheel! Save your ways and surfaces! They don't like rubbing on each other with abrasive stuff around You would not like to have sex with Sand between moving parts, isn't It Tony?

[@multiHappyHacker]

Back in the 90s or early 2000s I saw an interview with an inventor that had managed to transmit sound via laser beam for highly directional audio, he was claiming the American government and large corporations screwed him somehow. Be careful ToT, they might censor your grinding wheels.

[@bobbob8229]

The laser method works both ways.Vibration of Window glass can be read by laser. Picking up speech by cops,outside of building.

[@finnsailing69]

nice vid! are you thinking of getting a new sweater? xD

[@ThisOldTony]

at the very least I should probably wash it huh

[@finnsailing69]

i thought that you need to wash it only once in decade, soo.... has it really been so long since last wash? :D ps. thanks for cats in last video :D

[@MrBuck295]

Matias Forsman sure tony has thought of it ,who among us doesn`t dream of something he can`t have ?

[@taohawaii]

Ah! Finally, a forum for answers to all of life's greatest questions! Can you use magnetohydrodynamic cooling when you upload motion pictures of optoacoustic levitation? While orally ingesting a blackberry sugarplum corndog eggroll? Inquiring minds must be sated (vicariously).

[@MadHatter123456]

The KZbin-way of grinding is soooo wrong. You DO NOT move the wheel small incremenents over the part. What happenes is that the wheel gets tapered. You always want to move the wheel 1/3 to 2/3 of its thickness over the part. Much larger incremenents. Believe me, do your research on that - not on KZbin for frogs sake! I've been working as a grinder for almost 15 years in a big tooling company with a shitload of grinding machines - small ones, big ones, conventional and CNCs, round, profile and flat and what not. And I've never seen this grinding style but on KZbin. Doing bigger overlaps improves surface finish and your wheels live so much longer...

[@TC-bz9dz]

I always leave an Old Tony video much smarter after watching...I always learn something new!!

[@Angel_the_Bunny]

The video didn't raise any questions but it did raise something else if ya know what i mean!

[@tedwells1941]

You need to get out more!

[@jean-jacquesdupuy99]

Yeah yeah..., it actually brings the answer to where could the god damn "Surface Grinder Rebuild - part 4" video be. Hear the comment and see the sign at the 1:03 mark? Maybe Tony is working onto a full "Refurbishing an old grinder" season with 25 episodes... Back in 2014, he said he wanted to have fun with the original second(/third?) hand grinder he bought... (Yes I am talking to you Tony ;-) ) Maybe there is much more answers to be given to the community as to "how to fix the perpendicularity between the knee and the column while refurbishing an old grinder", and much more ?!?!?! I can't wait to see more.... And am I losing my mind because of Covid-19 containement measures? I don't think so... I secretly hope not. :-)

[@feelingluckyduck373]

I'm glad you revisited the grinder to talk about what side of the wheel to feed into. It should be the first lesson for anyone stepping toward a surface grinder. Your surface grinder is useless to me. I have to much muscle memory invested in grinders that aren't backward.

[@jimm2099]

Well, I see you got yourself out of that embarrassing and awkward cat situation. Sometimes I wonder about you Tony? Actually, I always wonder about you. At least you got the optoacoustic levitation right. Drive the speaker with a DC power supply that pushes the photons through the lens that focuses them onto the hammer, thus levitating the hammer. Just don't reverse the polarity, it'll break the lens. Thanks for the awesome content!

[@roeng1368]

Shorter ? I'll have to go onto mrpete's or abom's channel now. Anyway, what about people with small work areas, using a surface grinder near other machinery ? The dust has to be bad for everything else there right ?

[@mpetersen6]

Usually SG's have a vacuum system that sucks up grinding dust when doing dry grinding. On wet grinders I've seen both. Plus normally SG's are segregated from the rest of the shop. And if they aren't they are pointed at a wall or some sort of shield.

[@matman7546]

Use coolant. I have the same sort of problem. I have a small basement shop and I have no choice but to have my bench grinder very close to my mini mill and lathe. They both get covered with plastic before any grinding takes place, which can get annoying when you need to do a quick touch up on a tool

[@RenaxTM91]

Short and informative for once! I didn't even think to think about grinding wheel wear, but when you mentioned it at the start of the vid i started thinking "how the heck does that get any precision? Then you explain it so even I understand, and thats without going into 20minutes of talking about why the nut seems so un-parralell... tnx

[@heyimamaker]

It's nearly 2am, I like the soothing sound of This Old Tony and the gentle chatter of surface grinding before I go to sleep.

[@chesterhill5940]

Wrong direction? Like how you Americans drive on the right side, but also the wrong side at the same time haha rule Britannia

[@aususer415]

Ahh! You seemed to answer a question to a concept I just could never get past.. Having never seen or used a surface grinder, I too always thought it would cause a taper. If I understand what you are alluding to: as the front face is cutting, the "middle(?)" and back faces are (essentially?) finishing to size. Therefore, as Tony showed, as the front face wears away, the actual cutting surface of the disk will gradually move away from the front of the disk to more move midline - up until the whole disk is considered worn and thus requires dressing? Pardon my newbie-ness but I am fascinated by your trade (as its not mine... I'm EMS 🤕) I am self-teaching metalwork as a hobby, and TOT and Abom have really helped my skilling in all areas (ie. Abom enthused me to buy a lathe; Tony a tig... Wife is not happy with you two btw). No dum questions right? 🤔Thanks team

[@mpetersen6]

Normally when Surface Grinding one makes a number of "Spark Out Passes" at depth.

[@matman7546]

Correct. The width of the wheel that is cutting will be dictated by the step over used. There are also plunge grinding and side wheeling operations where the whole surface is being used and thus great attention must be payed to wheel wear and the wheel must be dressed more often to maintain the shape of the wheel. They hold shape and size for longer than one would think in such applications.

[@captcarlos]

Fellow AuzTeralian, I was always taught the only dumb question was the one you Didn't ask...

[@TomMakeHere]

Oh to have a surface grinder. Do I need one? No. But I can dream

[@grendelum]

0:42 Funny enough I used to work with a *_polychromatic optical acoustic modulator_* or *_PCOAM..._* it was part of the laser bench at a planetarium laser show, where the main beam (50% of it, t’other half had been split off to hit fixed prisms to be split into RBGC) of white laser went through the *PCOAM* which was a crystal that vibrated at ridiculous frequencies to refract the white laser into any of 16.7M colors before it hit its XY scanner amps at the right moments so the pre-rendered laser images were the right colors in the right spots :)

[@WisdomVendor1]

How did you get that opto-acoustic levitation device to work without a laser aimed at the voice cone?

[@mindthependulum6245]

As an automotive technician, I appreciate the heads up on things like this that I do so rarely, that I might have ended up with a chunk of grinding wheel in my head. I'm already grinding gears plenty, so this video is a welcome sight. Thanks Tony!

[@jasonbice1103]

Man i've been wondering this since the first time I seen a machinist grinder. And you explained it perfectly, made me think of it as a broach, where 95% of the work is done by the same part of the tool and the other 5% does the finish/sizing. Therefore it last longer. Thanks TOT.

[@maierpetarer652]

I worked at a cylindrical grinder factory and learned there to build and use them. Especially micrometer grinding was an artform for it self 😉

[@codymoncrief8478]

Only saw one wheel explode, on a 14" bull grinder. Someone was grinding with the side of the wheel and just barely got pulled out of the way before the wheel shattered. Scary stuff

[@codymoncrief8478]

@Kay Kay It was pretty scary. A chunk of it embedded the side of a metal toolbox about 15 feet away. I believe "operator," if you will, learned his lesson.

[@GPWoodworks]

The minutes in this video were too short. I like your videos with the longer minutes in them. They have more stupi... (...2...1) humor. Thanks for the extra content this month man... I wait for your videos... not with bated breathe mind... but I wait nonetheless.

[@SenzokuHoshiko]

This grinds my gears 😤

[@Pablo4949]

Thats nuts

[@nobodyuknow2490]

Actually it ended up grinding his nut...

[@mpetersen6]

The second grinding video I've seen in the last week and again the wheel is running the opposite way from every surface grinder I have ever run or seen. And I have run SG's from 6 x 12 Harigs, Popes, Mitsui's up through DoAlls, old Abarsives with sleeve main bearings, Okamoto's, Fairly good size Thompson's and a 48 x 120 Maddison. The Mattison used 20 x 4 inch wheels. The machine was big enough that we could put the bases for crankshaft grinders on it and grind the ways prior to scraping them back in. Did you and Stefan just happen to wire them backwards or is this common in Europe. As the majority of people are right handed from what I've seen right handed people tend to work from the right hand side of the machine. I also tend to favor the table traverse to be on the right side as that is what I am used to.

[@gladious7894]

So many videos recently. Nice work.

[@scootscoot2k]

maybe all these videos are due to the cat conversion? perhaps he is knocking the dvds he saves the videos off into the disc drive and then uploading them by dropping things on the keyboard....

[@jimc3688]

They are short like cat naps. Now you know why.

[@gunhedd5375]

Wow. Now that’s a big nut. (Here I thought the video thumbnail was just some crappy photoshop job. 😉)

[@twigletts8433]

Don't take bits out longer the better more excuse to sit feet up nd chill with my son

I click like before I even start to watch

[@padraicmcguire108]

Spent a good deal of time as a high precision grinder. Side wheel grinding is made easier by relieving the side of the wheel so it is slightly concave/stepped back. You want workpiece contact to be limited to a narrow band, say 3/8 inch of the side of the wheel.

[@kenseven1647]

Hi. I'm a precision grinder too.Grinding all kinds of part like tool, dies and many more. Hope you can share your experience with me.

[@chris993361]

I really love your videos and they tend to be a highlight of my day. I for one would not mind the videos getting longer in order for you to include everything you want. Keep up the great work!

[@fefifofob]

You've piqued my interest in optoacoustic levitation

[@mortlet5180]

Does that opto-acoustic levitator by any chance use the Magneto-Optical Kerr effect to modulate the entagled spin state of the hammer, thereby allowing the Quantum Zeno Effect to keep it stationary (via the Principle of Stationary Action)?

[@edwardtaylor4785]

It's pretty obvious that Tony's system has no nirving spandrels, so it couldn't fully utilize the KERR effect to any significant degree.

[@BradCozine]

Like if you're here to see Old Tony grind.

[@bobi1589]

Wish there was a superlike in KZbin!

[@meduffer]

Good fundamentals that I didn’t know. Thanks!

[@billyproctor9714]

Thanks for sharing this with us, I have a Q with regards to what you call Mag Blocks. I have a pair of these that were given to me 45 years ago and never knew what they were or for. I've kept them wrapped in a doe skin and when asked I would say I was told that they were wht. & yel. 18 K gold that were smuggled out of Nazi Germany during the war. It always got a conversation going as I'm a retired goldsmith. Mine are small about 2x6x1" thick, would they have been for the same kind of use? Are mag chucks something you might consider doing a video on? Keep up the great job, Billy in Ladysmith.

[@ThisOldTony]

I'm sure they'll pop up sooner or later! mag blocks are to help in setting parts up on the flat mag chuck, they "allow the magnetism through". Say, to pick a bad example out of the air, you had a more-or-less flat part with a dowel pin sticking out both sides (imagine it looks like a square top)... the pin keeps you from laying a flat surface down on the chuck. You could use two mag blocks to lift the part up a bit, so the pin is no longer interfering, and your mag chuck should hold the part in place to allow grinding. Dunno if that makes sense :)

[@AaronALAI]

Clicked on hoping it would answer this very question from the last video, thank you!

[@mmcollins3]

Another thing machinist do it not turn off the spindle after dressing. Especially after dressing for finish passes.

[@kenseven1647]

Yes.. You are right. Sometime turn off your wheel can effect the surface look like wave.

[@kevinreardon2558]

What I want to know is the relativistic effects of the rotation of the grinding wheel has on the surface? And can we trust it after Chris looses the Antikythera Mechanism?

[@nox_chan]

So I assume this is the PG version of AvE

[@Finntheweekendwarrior]

I caim for the opto acoustic levitation, stayed for the grinding

[@StevenAndrews]

i'm concerned we didn't get to see part 2 first. you can be linear on your own time.

[@chrisstephens6673]

No offence taken, an English friend.

[@jmtx.]

Thanks for answering some of the questions I had. Looking forward to Part 2.

[@The.Talent]

That was excellent. I’m doing a Materials and Manufacturing course at the moment as part of my engineering degree and this was perfect to explain a lot of what our lecturer missed.

[@DrStoppel]

Does your grinder have the option for coolant. What are the pros and cons of coolant on a grinder

[@ThisOldTony]

it does not. coolant allows you to take heavier cuts and grind for longer, also cuts down on dust in the air.

[@ChunkyMonkaayyy]

I know you had to take some extra time to explain things but I learned something there. So thanks and keep up the good work. I appreciate all the hard work. I know it’s hard to translate into simple.

[@TheKh66]

Switch the electrical cables feeding it on the back and it will turn clockwise with faster speed and less energy consumption.

[@km5405]

hey tony, ever heard of electromechanical grinding? :P