Grinding HSS Tools

A slightly different take on grinding your own tools for the shop.
I was going to call this video "Making The Case for Insert Tooling" but that'll be part 2. :)
I start from the very basics; if you're a ninja-level tool grinder, yes, this might hurt a bit.

[@andrewcullen3235]

I hope most people realize the effort that goes into shooting and editing these videos, adding all the graphics and animations, switching to macro lenses, dragging the camera around mounting and focusing, explaining technical jargon while being funny. I certainly enjoy and appreciate them. It's also the first tool grinding video that didn't make me pass out from boredom

[@schrauberhugo2594]

nicely said !

[@BrokenAbyss]

Andrew Cullen I'm a master welder took video production for 4 years in school and this stuff is rocket science literally down to the nutty gritty using 1000ths this and rocket 🚀 science. that's about it. I've used manual machines like presses brakes drills saws and even a mill cutter and I've known how to stick weld for almost ten years(yes I still do it because my vlog playing online video games haven't hit big for me yet. give me the money💰 ) my step dad had own business but I left after I got basics because family and business doesn't mix. believe it. but this shit rocket 🚀 science even after all that and every video online until I can put it to work(he has fab not machine shop and I don't have time to play with these machines they pay the bills),

[@BrokenAbyss]

Andrew Cullen I'm serious adobe movie maker like from when it was created through the 7th versos I believe. and honestly I've been working steel and stick welding ten years mug welding he wouldn't let me do for the first year until I could pass bend test and work in the field a year and tig about the same. and I'm telling you you're wrong on every level. 🚀 rocket science

[@jasonsloane7317]

this guy is awsome an funny i could watch his videos all day literally i have

[@dienachtundnebelmaschine5941]

I dont even have any machine i could do this with or use it in!

[@rockcrusher4636]

Tool maker 65 years and your descriptions are great. It's one thing to know how, but quite another thing to explain it. I've done everything there is to do in the industry, but still enjoy and learn from your explanations. Thank you and God bless you.

[@rocifier]

clearly you haven't invented a single compact and affordable cnc milling/turning machine with 6 degrees of freedom for hobbyists

[@HowItBreaks]

“If you can’t explain it to a six year old, you don’t understand it yourself”

[@MrRedstoner]

@@HowItBreaks Or you simply suck at explaining. IMHO that's a separate skill also needed for that.

[@PracticalEngineeringChannel]

Love the scooby doo approach. I like learning through other people's mistakes rather than my own.

[@ThisOldTony]

It's also cheaper. ;)

[@LeCharles07]

@@ThisOldTony The Scooby Doo approach reminded me of Jam Handy films like "Around the Corner" (kzbin.info/www/bejne/r4qkqGpvaJ1pjas) and "Spinning Levers" ​(kzbin.info/www/bejne/gICvpYZqi7qWrLM) and I still think it is the best way to teach a lot of topics. Your videos are more fun than Jam Handy films though, 11/10.

[@westly7rock]

amen

[@MAVENdeNYC]

Anyone can learn from their own mistakes, but it slows progression and advancement since it is expending time that could simply be leaped over by knowledge. If one knows what to do and what not to do, the experimental process for advancement can be done instead. No *need* to reinvent the wheel if it isn’t necessary, so to speak.

[@MAVENdeNYC]

@Will Swift Yes, which is why we have referenced resources such as books, manuals, magazines, videos, audio recordings, ect. of knowledge from historical timelines of technology to years of experience from writers. For example, some thrird-world countries bypassed certain technologies because they didn’t have the resources and/or skills other countries had, but as those first-world countries advanced they spread them to the third-world countries. Think of skipping dial-up to DSL, skip b&w T.V./photography to color, land-line phones to cell phones. Manual dexterity is only learned through experience, however with guidance on techniques and form one can acquire mastery much quicker. For instance, if you know how the stir pancake mix you can use that same technique to mix mortar/concrete (knowing more-or-less the consistency). Once the basic fundamental processes, techniques, and principles are learned and understood they can be translated and incorporated into other subjects than the ones which were learned from. I see a lot of basics being missed simply because the necessary skills aren’t translated from other fields which have the same basic principles. Only if they broke it down to to simple steps and processes and used what is already familiar to them would they succeed, and quicker. Sometimes the bigger picture needs to be put aside and ignored.

[@verdatum]

This is the 4th time I've watched this video. That's what This Old Tony has going on that very few other machinist KZbinrs manage to pull off: These videos are fantastically rewatchable.

[@katskratchkustumz]

2nd time for me! Fantastic videos!

[@katskratchkustumz]

@MichaelKingsfordGray Wow, good one.

[@daveunderwood6498]

This is only my third. Better pick the pace up. :)

[@AppliedScience]

Awesome! This is the best all-in-one video introduction to tool geometry I've ever seen. Nice job!

[@ThisOldTony]

Thanks AppSci!

[@djeletropopstarify]

I would say that, would be best to do on the belt grinder

[@jeffbeck6501]

Applied Science stole my line. I was going to say, "Awesome! This is the best all-in-one video introduction to tool geometry I've ever seen. Nice job!"

[@sidekick3rida]

Ben!

[@RazzleberryHaze]

@Solomon Dario literally no one cares

[@garth849]

I'm going to have my apprentice watch this video, it's absolutely the best primer on single point tooling I've ever run across. I started learning the trade from old machinists 40 years ago and I'm still doing it and still learning! Thanks Tony for helping me train my youngers!

[@TrevorDennis100]

I often think how awesome it must be starting on an engineering apprenticeship nowadays. There is so much amazing information to be had from the KZbin channels, In fact I started as an apprentice in 1967, and I am _still_ learning new stuff. (Not from this video however. We did not have tipped tools when I started, so I have ground a LOT of HSS tool bits. I actually ground one two days ago because I wanted to cut hardwood on the metal lathe, and tipped tools are not great on wood. You can buy the blanks cheap as chips from wish.com

[@GardenGuy1943]

They will fail. I did.

[@thefaulenzer677]

@@TrevorDennis100 You could try to grind the shape of a skew chisel into a solid HSS bar. Just watch a few videos on how skew chisels are used in woodturning and you'll know how to grind the mini version in your stock so that its positioned to the wood like a skew chisel to the wood in woodturning.

[@clayz1]

Old school machinist here. Why am I watching this? It is all quite correct. No drama. Good job.

[@tracylemme1375]

I’ve been at it for more than fifty years and I agree completely.

[@robpeters5204]

I’m 53 years old now living in Ontario Canada and I’ll never forget my grade 9 high school machine shop teacher in the early 80’s. He was originally from Bulgaria and he was frickin amazing! He showed me how to do just this. I have always used his technique on how to make a specific tooling for the lathe. It has served me and saved me throughout the years where I have seen many other tool, makers fall on their face.

[@HanstheTraffer]

Wow, Tony you have a GIFT of communication and instruction. I greatly appreciate you making these videos.

[@ruudsmits907]

Again, this video giving insight into the why more than the how suits my needs much better. I keep watching this channel probably until I have seen all 7 years of it. Thanks!

[@tigerzero5216]

40 years ago I took the wrong career path being mesmerized by electronics. I didn't recognize I had a talent for working materials back then. I've never had any schooling in metal work but everything I saw in this video made sense. A very well produced video. The hand gestures kept the attention going.

[@andrewyork3869]

My problem is I am into both....

[@tickertape1]

Same

[@MAINTMAN73]

This is absolutely solid gold. My 23 year old son is just now learning to become a machinist oh, and this is the type of irreplaceable priceless information that you just can't get in a class! Thank you so much for your contribution to the art!!! too many young kids are becoming appliance operators with their CNC machines, I was blessed enough to have learned on manual machines when I was much much younger, and it makes the troubleshooting process with a Haas CNC machine much easier.

[@GunflintDesigns]

Man way to break it down so even a dimwit like myself can follow along! Just what I was looking for, thanks for the help!

[@philipbyrnes7501]

Gunflint Designs Here, here, me too

[@chickensfloat7427]

Joim the club lol

[@daveunderwood6498]

Me too!

[@liamjerkins7259]

I just started a college level intro to manual machining class, and both my instructor and my textbook explain the tool geometry pretty well, but you, you TOT, you blew both of them out of the ball park. Excellent Video! I wish he would have played this for my class!

[@courierdog1941]

Tony brings the theory to real life using simple down to earth graphical illustration that wake the brain up and provides the viewer an Epiphany Moment in time where the World Stops and the Magic comes to the Light of Day.

[@courierdog1941]

Tony brings the theory of GRINDING HSS TOOLING, to real life, using simple down to earth graphical illustration that wake the brain up and provides the viewer an Epiphany Moment in time where the World Stops and the Magic comes to the Light of Day.

[@coolineho]

Tool geometry on cutting effect has always been more black magic than science for me although having a chance to make my own tool back in school. Thank-you so much for making it super clear! Love your videos

[@Luthlan]

I own an ancient Zyto hobby type lathe. Passed down through the family. I followed your instructions and was able to make my own tools in 1/4" HSS in no time. They cut like a dream. Thank you!

[@piecetoyou8285]

Well THANK YOU. After watching hundreds of footage on lathe cutters, I have to state `this was so easy to understand, You did a great explanation through the whole footage, 'and very well filmed, I understood what a relief is on drill bits and after 50 years I now can sharpen my own drill bits through watching other vids, And now ill be able to sharpen cutters etc for a lathe, I take my hat of to you, for your time you've taken out to show us how to do this, So a big thanks' And thank you for not using music which end up drowning over a persons voice.

[@smallfrysworld1794]

Thanks for describing all the reasons for the grinds...it's been over 40 years since Trade Shop Class and I needed the refresher. Picked up an older model Edestaal SL1000 and trying to relearn how to use it correctly. Thanks again...

[@Pow3llMorgan]

I let out an audible "Yeah!" when I saw this in my feed.

[@Thefreakyfreek]

Povl Besser it's the first thing I learnd at school (this was not ment to be a response 😆)

[@tomstr21]

Povl Besser ..i know that feeling :D

[@dfw_motorrad1329]

But did you change your speed to match this change in your feed?

[@YourMom-nz3qy]

Povl Besser I think we all did !!!!

[@per-5786]

Always the case when tony has a new video tbh..

[@n9viw]

Probably the single best explanation about a) how to grind HSS tooling, and b) WHY to grind it that way. Absolutely indispensable, and definitely bookmarked for future reference.

[@slep5039]

The amount of knowledge in this is amazing. These videos are just awesome.

[@ddd228]

Instructional and well laid out with excellent descriptions. This is what I have found,lately: kzbin.info/www/bejne/iXKwqpKenreCr80

[@fernandomoran8105]

22

[@alexm2833]

This is the type of instructional video i like. It goes beyond just telling you what to do, it teaches you how things work.

[@brandonlewis2599]

This is the most approachable introduction to the subject I've seen. I remember struggling with this for an hour in a machining class I once took, and in the end the instructor had to basically do it for me... I just couldn't understand what I was even trying to do. Now I might try to give another crack at it. Also, funny to boot. Thanks a lot!

[@staylucky4727]

I just tried doing this now in shop class. Came out like complete shit. Had no idea what I was doing

[@arkwoo]

Tony - I agree with folks who praise your skill and talent at setup, videography and narration - you're a natural at this and your production quality absolutely delivers. Beyond that, you are a wonderful teacher and mentor - folks don't realize what a gift this is. I greatly enjoy all of your video productions - thank you for providing these great videos !

[@garys9694]

Rather than just add my thumbs up, I have to agree with arkwoo, your videos should be a prerequisite for an apprentice machinist, tool and die maker or model maker. I was a machinist and only wished I could have had somebody as good as you instruct me. I had to learn it the hard way and even as I loved what I was doing my instructors were absolutely no help. I was successful, but damn was it hard!

[@ReevansElectro]

Another great video. I wish more KZbinrs would take the time to produce well scripted thoughtful and humorous informative videos.

[@gordongraham4247]

Wonderfully informative video. I love the way you describe things. It helps me to understand things at a very basic "first principles" level, which is much more useful than a "here's how to do it" video. Thank you.

[@2011dtish21]

I want to let you know, you are incredible. I spent a week attempting to figure out what was going on with rake angles, chip load, etc. during University, and I nearly failed the section. This actually clarified everything so super well. I know that I probably could have put this all together myself, but not nearly as well as this half hour has been. Thank you sooooo much for this.

[@BrokenAbyss]

David im still confused

[@titantitan3030]

I love those job I worked for 50 years ,all my live ,if I born again ,I will try again to work in that profession .I'm already retired but I still have some hooby machenery ,a hug ,many people in this field need this type of tutoring .

[@InfiniteCraftsman]

Wow. I acquired a lathe with a ton of cutters and tooling and now I know what I’m looking at. I can identify how each cutter should be used

[@dfu1685]

Wow! I have no experience with this nor do I have a clue what lathe tools are supposed to look like, but what a wonderful methodology and video for showing someone the HOW and WHY you make the tool as you do. I feel more intelligent just from watching you. Thank you for your Time, effort, experience and wisdom when making this video for us. Beautifully Done!

[@cav89-]

It has finally come to it. The ultimate consequence of watching thisoldtony. It’s still hard believe it. I bought a lathe. And I’m not even (too) embarrassed of saying it was largely because of his videos. This is the third time i’m watching this one. The first, i was but a hobbyist handtool woodworker, who inadvertently fell asleep while watching some other, more woodworking-friendly, of tot’s videos, and woke up midway this one while on autoplay. The second one, I watched because I had seen enough of tony’s videos to understand a little bit better what he is talking about, and was honestly enjoying the technical content and having a better grasp of the jokes. Now, I’m about to grind some hss blanks. Wish me luck. Otherwise, I’ll be sending you an invoice for the price I paid for the lathe. 😆 Thanks for your great work tot! This is how awesome you are! Congrats on 1M subscribers!

[@01oldfart]

As with most things you have to arrive at a point where you are ready to receive the wisdom and then it comes. This has clarified why tools are ground the way they are for me. Thank you a bunch. excellent presentation

[@abumalikmohammadabou-basha8060]

That sort of information is the most useful thing in the world, I think reading 100 books is not yet enough to get all that info you mentioned in this video. I love your work!

[@abdelmajeedabdallah1397]

That's right Mohammed

[@hashgeek929]

Just ground my first lathe tool based on what you showed here - 3 years after watching it. I honestly am shocked that enough of what you showed stuck in my head that the tool actually worked really well!

[@ccamen]

You're subtle subliminal message of subscribe wont work on me. I already subscribed.

[@BrilliantDesignOnline]

Dang, I saw it and I still subscribed!

[@Splatterpunk_OldNewYork]

I'm not hypnotized either. Though I am subbed for some reason....

[@dth91]

You are subtle subliminal message of subscribe wont work on me. I already subscribed.

[@pantherplatform]

I bet people would subscribe more often if you flashed it every second. I can't stop subscribing!

[@johnsontrucks8806]

This just in subscribing part 2 confirmed

[@brianhind6149]

SIR! You have answered every question about tool bits & the various angles. I do no machine work & never have, but I have insatiable curiosity about many things. Bravo ! & thank you !

[@moechano]

Dude, I love your videos so so much You have no idea the joy they bring me

[@LeuCustomKnives]

Man this was the BEST explanation of grinding tool bits I’ve ever seen!

[@ra13amon]

I use to have a family, wife, kids and a little turtle, my life did a 180 turn since I discovered rake angles, curls and chip breaking AND I don't even have an laythe ! I love you dude, keep it up.

[@nosimp-thy2485]

Wifey loves ya for it too

[@arunsharma-dx4yn]

The best explanation for the need for a single point cutting tool that I have seen as well as a clear explanation of how to create it.

[@sumikomei]

I've been gradually going through watching each of Tony's videos, and every time there's a new one I actually get a bit giddy. These videos are all amazing, it's pretty incredible how much I learn from each one and how entertaining they are at the same time. This guy really doesn't get enough attention in my opinion.

[@castelmichel8670]

Man. you should have been my math teacher in grade school ....you made this complicated subject as clear as it can ever be.. thank you for your time and effort.

[@xanokothe]

This video was really good. Now I undestand perfectly! Nestish-barb-wire is good, buying cutters is cheaper, and feed-rate for metal/alumnium is between 5000~7000. I'm so confident now that I'm going to work alone in my shop all night. Smell ya later

[@WCGwkf]

Xano Trevisan Kothe lol what

[@flyingpictures1100]

Got my 50 year old lathe today, Have not even cleaned it up or switched it on yet. Your video makes me think I can do this! Thanks Tony you took away the jargon and added the fun.

[@immolationangel4124]

When doing a boring operation, typically you want the tool to make chips. Long stringy shavings get caught up on your boring bar and ball up inside the work, causing scratched up finishes or breaking your cutting point. Small chips fall into the bottom of the work (tube/pipe or what have you), and just flow out of the work into your chip tray like fluid. With coolant, chips tend to flow out of a bore quite well. I've had some really far from fun boring operations where we couldn't push the tool hard enough to break a chip (due to clamping limitations), and I must say stringy shavings in a bore are a bitch to deal with. If your tool's geometry has a chip breaker built into it, generally as long as the tool is sharp, speeds and feeds will dictate whether or not it breaks a chip. Often times, these speeds and feeds are much harder than you would want to/could even push a hobby machine. Love the videos though, always entertaining.

[@user-pl9tu7tv3c]

Thanks very much! The way you explained this tool grinding procedure finally allowed me to understand what it is that you are trying to do when grinding the blank. You are an awesome teacher!

[@andregross7420]

Those C shaped chips are called 6's, except for in Australia where they're called 9's.

[@WCGwkf]

Andre Gross is that because they're upside down

[@cozf8109]

WCGwkf ǝɹɐ ʎllɐǝɹ ǝʍ sǝʎ

[@WCGwkf]

lol

[@waynecook8391]

What black magic do you use to turn your text down under?

[@ajl9491]

Dont they call em "e" in US ?

[@toodabutt70]

This is by far the best tool grinding video on the internet. The way you explained each mod to the tool and demonstrated the results, is the best way to teach people like me. Well done, thank you very much Sir.!!!!!!!

[@LaurentSparksMusic]

Awesome video! Also another example of when you dont want to "break" chips, when i work with a more expensive metal on a lathe ill try and keep my shavings in nice long pieces, especially for silver/brass/high quality steel, as its easy to collect and sort large spring like shavings rather than a bunch of tiny chips, this way you can easily recast your shavings into ingots

[@fernandoescobar4039]

I can not thank you enough for the clearest explanation I have ever seen. This one video cleared all my doubts than in my class I have ever attended. Thank you so much. Thanks for the great efforts to make it easy to understand.

[@Napkinholdin]

This is such a great video! This is one of my favorite methods to learn - trial and error, I love that you took the time to make this video and go step by step as though you were solving a problem. I've shared your videos with everyone I know because even if they don't have an interest in machining - they get a real kick out of your presentation which is by far the best of all! Thanks for all of the great content that you produce and I realize this video is a little old... but still :D

[@user-uk6tc2db5m]

The greatest tutorial I've watched on the subject.. explains the "why" instead of just do this.. Excellent job!!

[@govindarajd3248]

Damn! I've watched this video already... But I have a machining process exam tomorrow and had a hard time understanding this topic. So I rewatched it. You are awesome. Learning from home due to covid, I've never seen a lathe tool in person and your video is definitely the best after searching for so long!

[@thomasstone1363]

I've kust come back to this video after first watching it years ago. I'm in the process of grinding some new tools for my day job and this video is an absolutely superb how-to guide

[@michaelparker4998]

Hi Tony what a fantastically presented video. I have just started teaching myself how to use my new mill drill. Purchased my first bit of 1/4" tooling now I feel I can have a good go at sharpening it. Thanks heaps from a new subscriber in New Zealand

[@DecoyTango]

For a novice like me that's a super-useful video. The fact that you bothered with such high production values and also made it funny is a huge bonus. Very many thanks.

[@Bakers_Ville]

I work in a heat treating plant. High speed steels thermal resistance comes from the high molybdenum carbides in the alloy that retain their structure better under heat than regular ferric carbides. It's difficult to work besides a lot of grinding though, it needs to be nearly molten to be movable, and it quenches at nearly the melting point of the steel itself so if you overshoot at all or have a lower alloy than you thought you melt it and potentially burn your molybdenum out. I'm not an expert metallurgist though, I may be wrong and that's just the one variation I've seen.

[@idiotradar1]

I'm kinda a back yarder multi metal indulger [new word] and have learned many things on youtube if at first I can't figure them out myself. I have watched all videos pertaining to tool grinding, and you Sir can't be any more precise of the procedure. You have my utmost respect, and your channel I will subscribe to.

[@evilfish456]

This is insane. I'm getting obsessed with your videos, Tony. Can't wait for the next one!

[@oh8wingman]

I ground a fresh tool bit today for a project I am working on. I did it in a cutter/grinder and it was a thing of beauty. I was facing off a disc and it made the first two passes just fine. On the third pass it got a little less than half way and it hit what appeared to be a hard spot in the material which is mystery steel. When it hit the hard spot it literally took my cutting tip right off like it never existed. So it was back to carbide until the piece was finished. Whatever it was it was damned hard because it blew up two faces on a tri face carbide insert tool. I called my customer and asked where he had got this steel from and he was evasive about it's origins. I told him it was going to cost him more for the job and why. He didn't like it but he agreed. He also said next time the I will be responsible to purchase that material so we know what we have at the start. Gotta like it.

[@feeros57]

I've yet to see anything on T.V. as good as this channel! Very good content, editing, humor ect..

[@EFD620G]

I recieved this lesson at about 15 from my grandfather. I'm 73 now....it hasn't changed allot since then.

[@bigrockets]

Thanks so much for the time y. ou spent explaining the various angles and how they affect the cutting process. Now I can approach my tool bit grinding with some real knowledge about how to actually grind them!

[@CB-ck9dg]

A Master class. Meaning, a lecture by a Master. Meaning, somebody who knows what is talking about, and knows how to say it.

[@TheJoyofPrecision]

Great video, Tony! As you know, this subject is near and dear to my heart. :)

[@ThisOldTony]

Thanks, glad you liked it!

[@TheJoyofPrecision]

Your presentation here is exactly how I started out with tool bits when I knew literally nothing about lathe tool geometry. Went from trying an unground bit too experimenting with different angles.

[@thecogwheel]

HSS is the future .... in the home shop! Mastering, or at least getting the basics of grinding HSS tooling will save you so much money and help you get projects done faster. I know that carbide is much more efficient at removing material but you have to look at the big picture. Insert tooling is expensive .. and I'm part Dutch so naturally I avoid the stuff like the plague in the home shop. Stefan grinds his own carbide - something that is probably as economical as using HSS, but you need to master grinding HSS first. Loved the video, as always. Edutainment at its finest!

[@wpaulsonb]

I agree, great video. The overlay drawing added was brilliantly done.

[@diamondgrove3620]

While we may not all agree on every aspect of the advice and descriptions offered, a point that the presenter addresses openly in the monologue, this is (IMO) one of the best novice hobby machinist basic instructional videos on the subject of griding high speed tools available KZbin. Nice job .......

[@JosephNaberhaus]

Every time I see one of your videos on my sub box I get stupid grin on my face and click it as fast as I can! Thanks for you wonderful work!

[@markwillride]

Thank you very much for the info and the effort made to post this. My family ran a motorcycle dealership for 40 years and we bored many cylinders in that time. My dad had been a tool and die maker years before that so we had some knowledge in our shop about cutting tools. Occasionally my dad or I would try to sharpen the cutter for the boring bar (by hand). Because of the years of experimenting with good and bad results, it was really interesting to watch your video. We eventually bought a tool with carbide inserts but we found that we could get much less chatter from our machine if we modified the tip of the insert a little. My theory was the the angle on the end of the tool was just a little different that what we really needed. We had the machine overhauled at one point and that helped some too but having the right tip geometry was key to getting a finish that would hone out easily and make for the best cylinder surface.

[@lenny82]

Shout out from Australia, new to the industry and love your vids, classic mate

[@peterlawrence2650]

As a complete novice I found this most helpful and without any unnecessary verbiage

[@antmallett6065]

Brilliant vid - you should have called it 'Grinding HSS tools demystified". I learnt a great deal - very well explained, thank you. Subbed.

[@homebiz4567]

The most concise and complete explanation I have ever seen. Very nicely done.

[@BillyTpower]

very good video, probably the best on the tube. If I was still teaching shop I would be asking you for the educational rights to it.

[@ThisOldTony]

Thanks Billy, that's quite the compliment.

[@PatriotPaulUSA]

OMG The sarcasm and jokes and video edits never disappoint! Thanks so much for doing this. I am not wealthy and bought and am upgrading the dreaded Harbor Fraught Baby lathe. It does 80% of my small stuff I need but it has definately needed every upgrade I've done , A Lot. Now I am starting to do a few things and need to make bits so these vids are a godsend. Thank you.

[@Bloodray19]

I really enjoyed the video, but there is one thing that bothers me alot... Why am I watching these kind of videos, when i'm nowhere near a lathe or high speed steel or anything related to this?

[@ThisOldTony]

builds survival skills. :)

[@toniallen5950]

Szabó Arthur

[@nitbot]

Tony is just that good that he can draw in people that have no idea or interest in machining :)

[@verdatum]

I spent years in this realm. It's not that you don't have a lathe. It's that you don't have a lathe YET.

[@alt-w7130]

It would help your from been screwed by a machinist, when you carried a project to be done. Like going to a Auto Mechanic and he tell you $10. to change a radiator cap because it requires some technical work to do so. Respect.

[@omskariyazmaraikayer913]

What an explanation. Charity at its highest. What effort would have gone into this. May God reward you for this. All I can say is BIG THANK YOU.

[@Demoni696]

If you did not notice them, go back and read the secret messages on the grinding wheel. Very subtle Tony!

[@Darkhalfcustoms]

I saw that too where the NORTON should have been.

[@tomk3732]

Excellent video. The best explanation of what is involved in custom lathe tools I ever seen.

[@allennelson1987]

Wow, before I knew it, I had already gotten to 24:18. That is a really smooth thing that you did. The surface finish is like looking into a mirror.

[@Nicap2]

As a lathe newbie and an old fart, this video clearly explained the 'black magic' behind the cutter angles. Thank you very much, you have a new subscriber.

[@rdavidr]

does the "subscribe" or "like" grinding wheel leave a better finish? ;)

[@saxon215]

rdavidr no but the my eyes are up here does

[@ThisOldTony]

I would say "better" finish as much as "happier".

[@PorkBarrel.]

Don't forget the 'My eyes are up here'.

[@garfjones6206]

Brilliant! As a complete novice lathe user this helped me understand how to use a lathe tool as well as actually make one! Step by step with no jargon. Again, brilliant. Thanks.

[@marceltimmers1290]

Hi mate. I think you kicked a lot of the other grinding videos out of bed here. Although, maybe not the nicest tool to look at, it explained all I liked to know. I particularly liked the pencil analysis. All the little gages kept it all light and digestible, for me at least. Thanks teach.

[@macbirt56]

Tony, I don't know if you teach for a living but you absolutely should teach. Your knowledge and humor will keep even the most uninterested student engaged and facinated. Kudos. And if only 10% of the people who make videos had your technique, youtube would not be the vast wasteland of shameless self promoters that it has become.

[@muskratdove5223]

"I want to show you what the tool sees." Subscribed!

[@kierondesmond7791]

ToT is the most informative and entertaining channel on KZbin. The only channel where I still watch every video even if it's on a subject I know I'll never get into. And now that I'm thinking of up grading to a workshop that has more than just a cheap drill press, it's the only channel where I'm re-watching lots of videos =) Thank you ToT =)

[@goldassayer93555]

Old Tony You skipped the part from 1880 to 1906 when Frederic Taylor invented high speed steel, developed the Feed, Steed, Depth of Cut tables and Flood Coolant necessary to use it to best advantage, then published his findings in his book "On The Art Of Cutting Metals" which is available from Amazon.com otherwise pretty thorough history.

[@jayytee8062]

You mean "Frederick Winslow Taylor" "On the art of cutting metals"

[@goldassayer93555]

Yes

[@TheNephilim1337]

I've been working as a machinist for about 14 years, and I came here to brush up on some basics and found this very refreshing. In a modern workplace with CNC lathes, we rarely grind our own tools. 99% of the time we buy them from other companies that grind them using CNC. Great video! Hand grinding is a very important skill that is becoming lost in the modern world it seems.

[@brettb.7425]

“That sounded splendid!” 😂

[@incognitotorpedo42]

I worked in a job shop for two years when I was in high school. Tonight, I finally understand HSS grinds and why my bosses bits always worked better than the ones I ground.

[@joell439]

Did I hear you right? We're you suggesting Mrs TOT's chocolate chip cookies are harder than aluminum? Another GREAT instructional video. Thank you! Joel.....

[@BrilliantDesignOnline]

How do you think they machine carbide inserts? The cookies are not just for aluminum.

[@papapetad]

That's why TOT sounds so frustrated with chip breaking on aluminum, but also how he built up a wealth of knowledge on tool design. Trying to carve chocolate chips out of Mrs T's cookies is no joke.

[@iwasinnamuknow]

I've been watching ToT videos since this one was newly released. I've only just had the chance to get my own lathe and finally I can put all of this info to use. Time to grind my first HSS tool. Thanks Tony, you've taught me so much

[@wires99]

At 5:45, I've always called that "chatter." The chatter marks are seen in the corrugated pattern on the OD of the cut area. At 26:59, I wanted to scream "GET BACK!" Positive rake into a grinding wheel? Yikes! I got the same scolding after doing the same thing, then talking about the result. My result was that the tool caught on the wheel and shot toward the concrete floor, leaving a divot. It also took a chunk out of the grinding wheel and ruined the balance. Made quite a noise, followed by some astonished cussing. I was lucky not to be injured, and in retrospect, surprised the wheel didn't come apart. The wheel was shot, but I kept it for a while as a reminder. If I were to attempt the same grinding, I might use a Dremel with a cutoff wheel and clamp the HSS in a vice. Something - ANYthing else. All ranting aside, this is a very informative video, especially regarding chip breakers. I struggle with them, too. If you think 6061 aluminum is bad, consider 304 stainless without a chip break. Lots of sharp razors flying around. Ask me how I know...

[@pasdutout4690]

First time I used a lathe (30 years ago) I nearly destroyed it ( cutting tool heading straight through the chuck on automatic feed) . Euh... stayed away from them lathes for a while ...... Well , just bought a Sherline 4530 , as to exorcise my never ending guilt complex , hey. So I went ahead and tried grinding my own bits , only using that +/- 7 degree basic approach / trick....and , immediatly , it WORKED !!! Thanks so much for that video , I 'm now one proud lathe 'machinist' (all eyes on the chuck , sure ).

[@confederateillini]

Video so good I actually appreciate getting schooled! Love the vid! Detail, humor and info is awesome!

[@nksingh5899]

None of the teachers of my college explained tool geometry this easily. I was struggling understanding all this Angles. Thanks a lot ..... You are a great teacher.... You made this so simple to understand.

[@Eric-lw4ih]

I wish my college professors could explain things as well as you...

[@alt-w7130]

They have teachers and they have people who think they can teach it sad to say.

[@kgee2111]

Great video! That’s the first time anyone has ever explained the reason for the cutting angles to me. Thanks again.

[@kandkmotorsports]

My tooling always looks and sounds like the very first pass!! LOL Great vid, I think my 10 inch atlas will thank you!

[@ItOttoMatic]

Thank you “Old Tony”! Seriously I really appreciate ALL your time and video content you put out to teach us. 🙏🏻