Making gear cutters in the home workshop using Eureka tool

[@openclockclubarchive325]

Exactly what KZbin is for. Sharing invaluable knowledge

[@bobuk5722]

Folks, this is the first time I've seen a video about making the truly wonderful 'Eureka'. As far as I know it's the only video about it. The tool solves a very, very tricky problem, that of automating the manufacture of the complex tooth shapes required on an an involute gear cutter. It can make cutters for any size of gear with any number of teeth within its size range - either diametrical or modular pitch. It really is a wonderful invention and I strongly recommend anyone interested in gears to have read of the book mentioned in this video. You will learn a lot! Liked and sub'd.

[@steelcappedstrength]

Hey, here is another person that made one of these gear cutters if you're interested. kzbin.info/www/bejne/joKbqGlvZr-ZfKc

[@wadekmroczkiewicz7597]

Seks

[@coverfrequency2305]

I have schematics of this mechanism in a gear cutting Machinist book but first time seeing one work.

[@dallet40]

Попробуй чпу. Там любые кривые можно делать. За 30 минут максимум.

[@timogross8191]

No robertt4522 made a video with eureka tool a while ago: kzbin.info/www/bejne/fJDaamV5erKfipY

[@tilliesinabottle]

I read that Ivan Law book last year, that eureka tool was quite the holy grail for home making gear cutters.

[@jamesbooth3360]

Finally, someone makes this fabulous tool on KZbin! My favorite book in the series. You earned my subscription as my way of saying thanks.

[@MetalMachineShop]

Thank you!

[@incolink]

what a beautiful old contraption from a time forgotten . thank you for taking the time to share your traffic skills I will have no problem paying the money for a set of gear cutters after seeing this

[@MetalMachineShop]

Yes just buy the cutters and save a hell of a lot of time!

[@dpeter6396]

I first saw this device about 10 years ago and fell in love with it. At the time I had plans to build some things requiring gears but life changed and I never built the tool or the project. This is an excellent addition to Ivan's book and will serve to guide those who will build this tool!! Excellent. Thanks.

[@pauayelo3024]

Amazing , its great to see videos like this , si that old techniques of making things dont get lost in the past.

[@dalelathwell7219]

Very impressive and to see it made with machines that are realistically affordable for a home workshop similar to my own 👍

[@peterahjorter]

Always amazing to see how many smart tools there are available

[@ferrumignis]

Fantastic video! I'd never really considered the process that would be needed to provide relief to the sides of the teeth, really ingenious.

[@stxrynn]

Very well done. Great attention to detail and very clear video production. Thank you!!

[@MetalMachineShop]

Thanks!

[@petermcneill80]

Very impressive work , I’d never seen anything like that done in the home shop before.

[@sushantbolinjkar3477]

I have no words to express. I'm speechless. Marvelous creativity and marvelous engineering. 👌🏼👌🏼

[@charlvanniekerk8009]

my mind has never been more spectacularly blown. Firstly i never knew the Eureka tool existed and now that i do i will never be the same

[@MetalMachineShop]

Haha I enjoyed your comment!

[@Dogfather66227]

I am so glad that I blundered into this channel. Have planned to build a Eureka tool for some time and enjoyed watching your implementation. Law’s book does show you everything you need to know to build one of these but there is a lot to be gained by watching someone else do it first. Also interested to see your various shop-made indexing and positioning tooling. Thanks for posting. Subscribed.

[@nickj2508]

I always wondered how the relief was made. Nicely done. I learned something new. 👍

[@MatthewRulla]

Nice presentation. I made the Eureka tool about 15 years ago and I've since forgotten many of the steps it took to get the parts made. Keep up the excellent videos!

[@Jimbo-t2h]

Brilliant. Thanks for letting us witness your amazing skills.

[@woodndrum303]

Great video technique and content. This is the only video I've found showing this unusual tool. Fascinating to watch, makes the text in the No17 handbook come alive.

[@grahamokeeffe2196]

I have the drawings for one of these in my books, nice to see one made and in operation, well done.

[@smudgemo]

Super-interesting book and beautiful work. The author notes that the mystery will unfold when the reader views the finished product, and he was correct. Now I understand. Not likely I'll ever build one, but you're reminding me that I need to get back to work on my Harold Hall Advanced Grinding Rest.

[@MetalMachineShop]

I made a HH grinding rest too! Very useful tool.

[@poppa5289]

Fabrication is an art form, Well done Sir 👍

[@dlfabrications]

I made this tool two or three years ago. Never got to try it out because the price of tool steel(water cooled) was a ridiculous price in my neck of the woods. Thank You for the time you invested in this video.🙂🙂🙂

[@davidtaylor6124]

Same here - once I realised silver steel plate was involved it was a hard no. That stuff is stupid expensive in Australia. I was fortunate enough to be given some for my loco expansion links because otherwise they'd be mild steel.

[@zvonibab]

As hobby machinist I am amazed with your knowledge and craftsmanship, well done Mister

[@MetalMachineShop]

Thanks!

[@LetsRogerThat]

That was a very complex process. Worthwhile knowing about and interesting to watch. And it it convinced me to keep buying cutters. Great video. Gilles

[@MetalMachineShop]

I agree, buying cutters saves time!

[@StefanGotteswinter]

Mighty impressive, enjoyed it a lot 🙏

[@MetalMachineShop]

Thank you, not quite up to your standard yet though unfortunately!

[@StefanGotteswinter]

@@MetalMachineShop I think its very, well made 🙂And the first long comprehensive description of how it works and is used on youtube - thanks a lot for that!

[@davidsnyder2000]

Loved this video. A lot of content in one video. I most definitely liked and subscribed 👍🙂 Thank you taking the all the extra time to film and edit everything. I know it’ adds quite a bit of extra work, but I appreciate it.

[@MetalMachineShop]

Thanks, I’m glad you found it of interest, makes it all worthwhile.

[@markenna5955]

wonderful solution, this will make gear cutting economically possible

[@krokodilchik]

Amazing job wich dimands knowlege and smartness , skils, and ,,straight ,, hands . And at the same time he has finger of a piano player... A big respect and regardes from Armenia..... He is talent!

[@MetalMachineShop]

You wouldn’t want to hear my piano playing!

[@krokodilchik]

😂😂 I guess.. i told it in good sense. Because in territory of past soviet union a man who works industrial specialties suppose to have hans of godzilla. Dirty ,hardened skin with cracks barbs that can injure a human..

[@MetalMachineShop]

@@krokodilchik haha I should get my hands dirtier!

[@sharkbaitsurfer]

That is seriously magnificent work and that eureka tool really is quite something. Colour me impressed

[@MetalMachineShop]

Thanks, glad you liked it!

[@charlieromeo7663]

Great work! Ever since I needed a 22/29 DP with a 20 degree PA gear for my Hardinge HLV-H, gears have really interested me. Cutters for Fellows Stub are very difficult to find. You have given me hope to eventually cut my own gears for my lathe. Cheers from Florida’s Space Coast!

[@MetalMachineShop]

Good luck, you can make simpler cutters using the button tools but without needing the Eureka tool. The Clickspring channel has some good vids on the subject.

[@wibblywobblyidiotvision]

That's fabulous. Well done!

[@who-gives-a-toss_Bear]

Brilliant presentation. Very clear and informative. The home made cutter grinder, very simple.

[@MetalMachineShop]

Thanks!

[@Rustinox]

A lot of work but very interesting and well worth giving it a go. Thanks for posting this.

[@leedoss6905]

No need for CNC and people don't realize it. Fantastic demonstration.

[@_MadFox]

Wonderful! A wonderful homemade! Thank you for sharing!

[@machinist_matt]

You've earned yourself a sub, that was very interesting! A lot of work goes into making those gear cutters, and I now know why they are so expensive! 😬

[@union310]

I met Ivan a few times, nice chap.

[@russtuff]

I just stumbled across your channel, and hot damn that's some fantastic work. And I thought I was already subscribed to all the good machining channels on KZbin.

[@MetalMachineShop]

Thanks!

[@JaredAF]

Amazing to see how it's done

[@Preso58]

Nice job. I had read about the Eureka tool in old back issues of the Model Engineer magazine but I'd never been able to see it in operation. It almost seems to be too good to be true.

[@homemadetools]

Great job on this tool. We shared this video on our homemade tools forum this week 😎

[@AmiltonJr]

Brilliant work. You're a true artist with great knowledge.

[@MetalMachineShop]

I’m happy you liked it!

[@paulkurilecz4209]

Beautiful work! I have always wondered how I might make the occasional gear with out spending a large pile of money. I will have to find the book. tyvm

[@MetalMachineShop]

You can make simpler fly cutters using the button tools without having to gi to the triuble of making the Eureka tool. It's all in the book.

[@paulrayner4514]

I have that book somewhere, I will have to did it out, many thanks👍

[@MadJack-yl6od]

Awesome video, answered questions I didn't even know I had!

[@keithgarland3404]

Very interesting, read articles about the Eureka tool, with mixed results of building and using it.

[@sky173]

Nice work. I'm just getting into gear cutting. This would be a great project. Thanks for sharing,.

[@storminmormin14]

At 1:33 he sets the cylinder down on the glass and it continues to rotate. Really satisfying.

[@9traktor]

Very fine work. Respect!

[@MetalMachineShop]

Thanks!

[@stevengehm1287]

Very Nicely done! Eureka!

[@joesmith4494]

That was an excellent video you have my subscription

[@MetalMachineShop]

Thanks!

[@mickgentry8128]

Brilliant video, very enjoyable ! thank you.

[@luismedrano4633]

Mis respetos es Ud una persona muy inteligente con muchos conocimientos, gracias por compartir saludos desde México

[@ZomB1986]

I was exciting to see how you'd make the involutes for some specific pitch diameters, without using CNC, but you didn't. I don't understand how you can use a circular profile to create an involute gear.

[@MetalMachineShop]

The circular profile is a very close approximation to an involute so for practical applications it’s fine. For critical, professional applications maybe not so much.

[@ZomB1986]

@@MetalMachineShop Not for pinions or wheels of under about 12 teeth.

[@ZomB1986]

@@MetalMachineShop I think I might have just found the answer: kzbin.info/www/bejne/nWjUomRsdqh0qKs (though we'll have to see until that series progresses further)

[@dermotkelly2971]

Great stuff I have never done anything like that!

[@jimsvideos7201]

Thank you for the fine work on the video and the part! I've purchased a few cutters but this seems like an intriguing problem and perhaps a cost savings too.

[@MetalMachineShop]

Cost saving at the expense of a lot of time though!

[@aj7utu]

In the book cited by Law, it’s remarked that a set of gear cutters were out of the range of hobbyists, giving rise to the last chapter of the book on which this video I’d based. Now you can buy a Chinese set for under $70.

[@WrenagadeWorkshop]

That was very cool to see, thanks for taking the time to document your build and sharing. I'd love to make one myself one day, along with a banjo for a mill table so I can make helical gears.

[@siggyincr7447]

Really interesting solution to producing the relief on each tooth. Though, I'm a bit confused as to how the round buttons produce the volute geometry. The tooth profile is far more complex than just two radii.

[@MetalMachineShop]

The round tool profile is not an exact involute, but it is close enough for practical purpose and for small gears you will not notice a difference.

[@johnfrimenko9789]

Can you make a video showing the bench grinder adapted for tool grinding? high/low speed rpm, arbor diameters, tool holders, wheel spec, coolant ....

[@HuFlungDung2]

Years ago, I built a hydraulic relieving attachment. It had a large cam with 8 lobes that drove a piston placed beneath it like a steady rest clamp. The cam was mounted on the same mandrel as tool blank, between centers. The piston was plumbed to a slave cylinder with a reciprocating piston in the toolpost. This slave piston had the tool bit sticking out. This worked. The problem is vibration and chatter marks on the work as the tool enters. So i did the relieving before I cut the gashes, this way I could pick the best position to make the gash. I did all this because I couldn't find a special stub tooth gear cutter. Otherwise it's difficult to justify the time spent doing this.

[@MetalMachineShop]

Sounds like an interesting challenge at least! Could probably use the same set up as a follower for profile turning.

[@SRG-Learn-Makers]

Really awesome. Thanks for sharing.

[@SamGlasser]

Very Nice!, Good detail an explanation. Obviously you know a lot about machining.

[@RalfyCustoms]

Absolutely brilliant, thoroughly enjoyed this, subbed 😀

[@MetalMachineShop]

thanks!

[@ЮрийКоротчук]

Это поразительно! Сколько труда человек вложил! А у нас немеряно таких фрез ушло в металлолом, как же это больно... Да и не только фрез...

[@MetalMachineShop]

I’ve rescued some good stuff from machine shop scrap bins before!

[@mrnobody9821]

The book mentioned is : Gears and Gear Cutting - Workshop Practice Series 17 -Ivan Law

[@lecnac855]

That was excellent. Well done.👍⭐

[@MetalMachineShop]

Thanks 😊

[@DavidHerscher]

Brilliantly done sir

[@normtheteacher5485]

Thanks for the video for learning purposes. Your very talented.

[@MetalMachineShop]

Thanks!

[@TalRohan]

very cool, not sure I can do all that with just the lathe though...atleast not at this point, maybe with more experiece and some wierd tool builds under my belt.... those books look fascinating too thanks for sharing

[@guye7763]

Well done, very impressive.

[@davidtaylor6124]

Great work! I enjoyed that.

[@georgef1176]

Bro that is so amazing.

[@alejandroluer]

Eres un artista. Mis respetos! Saludos y larga vida!

[@spudzwon]

I made many of the parts for one of those but sold what I needed it to make gears for and never finished it. It was a fascinating device.

[@steveherjon9775]

Thank you for the excellent video, my only question is would oil be better for quenching the hardened steel parts?

[@campbellmorrison8540]

What an excellent video thank you. I've heard of a Eureka tool but never seen one in detail and in action. All out of my ability so purchased a set of M0.6 cutters, I know its cheating but aliexpress is very tempting these days and to be honest I'm very happy if I can just cut a gear let alone make the cutters. I have subscribed :)

[@MetalMachineShop]

I must admit, I did regret not just buying the cutters!

[@magnusklahr8190]

Fantastic!! Great video!!

[@msquared6324]

Very interesting video. For the equipment you have, you do pretty high-class work! Do you sharpen the cutters again after heat treatment? I grind cutters for a living, and I would think a dressing up after the "pickle" to remove scale would yield a better cutting edge. Be interesting to see what you make with those. I'll be watching for more content.

[@MetalMachineShop]

Hi, yes I gave them a final sharpen with a diamond file after hardening.

[@Somagraf2]

Muito bom aprendi bastante com seu video, Att. Vicente

[@henrikb.andersen5150]

Very informative,- thanks, must be tried. 👍

[@gordon6029]

Just found your channel. Subscribed!

[@MetalMachineShop]

Excellent, thank you!

[@alejandroluer]

This is insane!!!!

[@lockbiz379]

Why didn’t you put a Keyway in the cutter ?

[@MetalMachineShop]

Two reasons: the rotational position of the cutter on the tool needs to be adjusted to set the right position and I have found that the clamping force of the nut is sufficient. In case of a tool dig in, it is probably better that the cutter slips otherwise some more serious damage to the Eureka tool could occur.

[@lockbiz379]

@@MetalMachineShop but for normal running in a mill surely you need a keyway to drive the cutter.

[@DoctyrEvil]

Have you ever tried a nitre salt bath for tempering? I know it's used on springs and can also produce an attractive finish.

[@MetalMachineShop]

I haven’t, but I do need a more scientific method for tempering, so I’ll look into it.

[@atiger4716]

So we'll explained! Thanks very much. A new subscriber here 😁

[@MetalMachineShop]

Thank you!

[@Lordosvk]

Just wow 😮

[@pawekowalski7469]

👍👍👍 Can you give the symbol of the steel from which you made the cutters? Możesz podać symbol stali z którego zrobiłeś frezy?

[@MetalMachineShop]

I used what is called ‘gauge plate’ in the UK; that is what it is sold as and is readily available from metal stockists. Also known as silver steel in bar form. I don’t know a more precise formula for it I’m afraid,

[@mikeskupniewitz8057]

Neat … I made my eureka tool a couple years ago and posted a video here to which had some views… but have yet to make blanks and button tool… some day… it’s a good project/tool to make and have in your arsenal…

[@kabovasya]

Гарна робота !!!!Респект!!!!!!

[@andrewm6340]

Brilliant! Thank you!

[@vakilsaifi6475]

very useful video ! thank you

[@ИгорьЛюбарский-ж2ь]

это уникальное видео. такое полезное не каждый день встретишь

[@MetalMachineShop]

Thank you!

[@DK-vx1zc]

excellent work! thanks for sharing.. subscribed

[@nohphd]

It would be ever so helpful to include information about the book mentioned. Or even better, an Amazon link to purchase. Otherwise, a brilliant video!

[@crichtonbruce4329]

First time watching your channel. That was truly impressive! Question: Do you get much warpage of the cutters by heat treating this way?

[@MetalMachineShop]

No noticeable warping, but it could be an issue for slender parts.

[@leoadrian21]

amazing job, new sub, can ia make a question? where do you get that table to make the bottoms? thanks for share. Good Bless You

[@MetalMachineShop]

It's in the book referred to - Gears and Gear Cutting by Ivan Law.

[@MASI_forging]

Look fabulous as always 🙂🙂

[@halfnelson6115]

What was the name of that first lathe used here? What was that above the headstock?

[@MetalMachineShop]

It’s a Warco WMT300/2 combined lathe and milling machine. The thing above the headstock is the milling head.