Wow, that is the most effed up way I've ever seen a gear cut, and it worked just fine. Props.

MAN! Man! MAN!!! This is genius! Using a common threading bit and a lathe... oh boy I will make so many worm reductors now lol THANK YOU!

I spent fifty years in toolrooms, building stamping dies, injection molds, and lots of prototype gizmos. I am very impressed.

I have done this on mills too. It is a very good method to create custom worm gear sets. You get very good engagement as well. I had to make these type of gear sets for scientific instruments. No one made the sizes and gear ratio I needed. Nice video and methods

I have been a Tool & Die maker for over 50 years but I want to commend you on your skill and ability to make such a fine project with so little. Your methods at times scare me as far as safety goes and your fingers as holding things with your hands can lead to the loss of fingers and I have seen eyes put out in machine shops I have worked in but still I have never seen so much made with so little. ' We used to have a saying when I worked at Arizona State University in the Physics Machine Shop for 20 years before I retired. "We the willing, lead by the unknowing, are doing the impossible for the ungrateful. We have done so much for so long with so little that we are now qualified to anything with nothing at all"! You personify that statement! You Rock my friend and I say Kudos to you. What a beautiful job you did with rudimentary tools. Your ingenuity is to be admired. It takes a person with knowledge of such devices (worm and worm wheel) to appreciate what you have done. The unknowing will just look at it and see nothing. Truly, beauty is in the eyes of the beholder. The knowing will see beauty in every step. The unknowing will just stare like a deer in a headlight. Take care and keep up the good work. Maximus has spoken.

Using threading tap is a briliant idea. Thanks for the film!

I don't understand how there can be people who don't like this work of yours, it's GREAT, very professional, greetings from Punta Umbría-Huelva.

Shout out to the people including me who has no lathe🤣🤣🤣🤣

A special work! I've been working with machines for 15 years but I can still learn tricks from you. Today's technology no longer allows you to learn things. Wonderfully worked and clean. Good luck

It is so spectacular watching how you used the tap to make gear teeth. Amazing work and so satisfying to watch.

It’s been a pleasure viewing your gears, young man. Thank for the performance.

I am so thankful to have come across this wonderful,amazing, video. Thank you very much!!!!

how do you calculate the diameter in order to avoid a thread mismatch at the end of the work?

Fantastic work mate! Looks really good, works well too. Best to have a nice tight press fit for bearings, if that's not possible then make it a sliding fit and use loctite bearing retainer (638/648) for bearing/shaft seals instead of jb-weld or generic epoxy. Also use tapered roller bearings instead of ball bearings for the bolt-drive if there's going to be high axial loads.

Very nicely done. Might be a good idea to cover the ways of the lathe when using the Dremel.

this looks amazing. I do wonder just how much strain those smaller threads can take on a single side like that If it can take a few thousand pounds without deforming the threads this would be an amazingly useful bit of kit to have.

Question When that wheel comes around to the original place of starting, What's to say it will line up correctly to the original threads? I think you were lucky, unless you did some serious calculations

Well done, master of machining! I would like to reply to some comments made about the accuracy of the cutting procedure. One calculates the Pitch Circle Diametre (PCD) of the threading tap to the size of gear one wants to cut also using the PCD to size the final dimension of the gear.

Excellent job, after long time working I learned something completly new. Thanks

Very nice! It should be said though that not all worm gears have a locked output gear. I currently have a 15:1 gear in front of me which is actually back-driveable. Just so no one builds a dangerous machine based on the information in the video.

Nice and interesting your presentation, but I have a question: when you first cut that gear using a M20 tap, how did you know the gear would have an integer number of teeth? That operation is usually made using a divider in order to get an integer number of teeth.

Well, 'I learned something new. Thanks for the upload.

You’re making it look way too easy, I just wish it was for everyone, awesome!

You are a”REAL” boss, thanks.

Hi ! The idea is good but...... The tool you used to create the teeth on the crown would have to be slightly different. As there is a height difference between the tooth head and the tooth foot, the tool would have to be modified so that the coupling between the screw and the crown was more precise. It may work, but it can't be too demanding on the system.

Beautiful work, brother. Well made!

Thank you for not just blasting music during the video.

Сколько работы и материалов ушло в никуда... Всю эту накатку с колеса червяк слижет в момент при малейшей нагрузке, а поскольку кривые руки не в состоянии установить подшипники без клея, то система неразборная и неремонтопригодная, при первой же поломке только в утиль все изделие целиком.

Looks ideal for a homemade power cross feed for the milling machine.

I made one very similar. Only issue is once you add a load on the worm gear, the steel bolt will destroy the brass gear.

Great job! How to calculate diameter' gear, if you want a determined number of teeth? And how "pitch" first and last teeth in the first pass? Does it "automatically" match? Thanks.

wow... extremly professional

Me: I wonder what kind of $3000 tool he will use to make those threads. Him: hand tap Me: .....ITS SO BEAUTIFUL

Wow dude! I'm very impressed with your ingenuity on this project. I do have one question for you if you don't mind. Why didn't you cut the bolt support bearing housing to a .001"/.002" press fit? The epoxy works too, and i love the finished product! 10 out of 10 in my book Brother.

Very cool. Love the shop.

How did all the threads line up so perfectly? Don't you have to choose the diameter very precisly?

Качество изготовления потрясающее. Мне кажется, что подшипники на приводном червяке должны быть упорными, либо, как минимум, должны иметь крышки. Иначе высокий крутящий момент вырвет болт вместе с подшипниками. Еще, наверное, надо бы масляную ванну предусмотреть для смазки шестерен

Следует подшипники винта устанавливать с внутренней стороны обоймы подшипника. И на винту делать ограничители для устранения продольного хождения винта. Потому как при большой нагрузке на винт он будет выходить с посадочных мест под подшипник, и даже с самим подшипником. И у данной конструкции нет возможности регулирования резьбового зазора. Но как наглядное пособие для изготовления ходоуменьшителя сойдёт. 😂

иииии подача смазки в такой узел тугой струёй. Лайк, людям с руками всегда лайк

Very interesting. How did you know how to make the threads on the gear "intersect" at the end? I assume it was a calculation, but how does that get made? I mean, you could take it around once, and it could obviously just start a new threading overlaid on the old one, messing up the point -- the thread had to **exactly** match into itself after one (and each subsequent) revolution of the work gear blank.... even a fraction of an inch of variance would have meant a less than accurate in-fit with each successive revolution, meaning slop... How did you determine what was done/needed?

Awesome work sir, keep up a good work sir, appreciating from the Philippines

Every step is very clever and practical, you are a great machinist. But there is a design flow. The surface of a bolt's thread is quite raw, it's not the best, the tolerance neither and its not hardened, not designed for continuous rotation and friction. A real worm gear is relatively cheap, and its, much more pedantic part for this task. It's not worth replacing it with a bolt in my opinion.

Great work, beautiful worm gear. When in actual use, it will need some grease.

Great job very professional. Respect for you genius. 👏👏👏

i hope I get to do something like that on a lathe at my university. Ive wanted to construct a heavy telescope mount for a long time but an essential part of those is a worm gear (since they spin at around one revolution per 23h 56m)

Cześć Maciek. Do czegoś konkretnego użyjesz takiej przekładni?

I like the vice on your drill press

Love the project for my little shop. Good job man.

Brilliant Mechanical Work 👌👌👌

Nice work there. Did you calculate the diameter of the brass part to get the thread forms to match, or did you refer to a table of some kind? Regards Mark in the UK

1 вопрос: зачем делать червячную передачу винт-гайка с использованием метрической резьбы вместо прямоугольной(ну или на крайняк трапецеидальной)?

How did you determine the radius or diameter of the wheel to allow the tap to fit perfectly along the circumference?

Oooh, that's practical engineering!😀😀😀

Very good idea. Thank you.

Amazing work. Thank you

Ещё в советское время в СССР самодельщики предложили нарезать червячные колеса метчиками.

I really like the way you cut the thread on the gear very ingenious. I really did not like the use of epoxy instead of press fit or even snap rings to retain the bearings. But yeah pretty cool. Impressive welding also

Professionals Always Professionals keep it up 👌👌✌✌👉👉👍👍🤝

This is peak engineering

nicely done...good job

This makes me want a mini lathe so bad!

These engineers were no-where near the vandalism center and looting, nor did they sneak across our borders. India has millions of resourceful people . Good to know the delightful combination of the hand and the head. Love this stuff. Thanks.

Very nice but what if a bearing fails, since its epoxied in thats gonna be a pain to remove XD

How did you manage to get the precision right so there were an integer number of teeth around gear? Since the diameter gets smaller as you cut the ridges deeper did you just keep going until the ridges met in the middle as an integer number, or was it sized specifically/another part of the design process that ensured your brass gear had clean and a flat number of teeth?

A lot of work with many steps shown ....all good. BUT .....not knowing what the "purpose" or "application" is, there are several questions. Where is the "adjustment" for wear? Someone commented about "good engagement" with worm gear sets. Actually ...quite the opposite. There MIGHT be engagement in only on how deep the thread is generated. 180° is the maximum, which is really a lot, and only ONE thread pitch is engaged. So if this is purely "reduction" your needing, and there is no significant load, this will work for a while. I couldn't help notice the chatter at 1:32. You are not going to get a very good surface finish OR accurate thread form. Just wondering why the spindle speed was so fast ....also no cutting lube? And lastly, the bolt you used clearly showed it had a very poor finish on the thread. There were several points where we could see the thread. One was at 7:05 and you can see numerous "nicks" on this thread. I suppose this "project" was to demonstrate steps of machining and fabricating. To anyone thinking this is for "high torque" applications, it is not ....not with this kind of standard thread. An acme thread would be the first choice. .

No comment. Super work

Great job, Great Video.

Great design nice thank you so much sir.

Beautiful job. You make it look so simple. I know it isn’t.

I am impressed

Most everything was well done. However, there is no way to adjust the backlash of the worm gear and worm wheel. It is very obvious that there is significant slope between them. This is detrimental to many applications. Being able to adjust that backlash is crucial to many applications of this technique. Also, it would be good to be able to predetermine what the exact ratio would be and how to determine the outside diameter of the two gears. Also required is the depth of the worm wheel recess. This is fine for crude things like lifting mechanisms and such but, not for when precision is reequired. Regardless, the video itself and the overall construction was well done.

You are obviously much more experienced with machine work than me but I NEVER hold anything by hand when using drill press. (Only took ONE time!)

a very nice idea

Excellent work

Very amazing work

in order for the threads to meet properly at 360* how do you know what the driven gear diameter would be before cutting the worm gear teeth?

El torno la maquina más completa sin dudas!

Impressive work!

The gear ratio of the worm gear to the worm wheel cannot be a decimal number! In this case, the worm gear has to spin EXACTLY 110 times for the worm wheel to rotate once.

Wow! - projekt jest genialny i zrobiony bardzo estetycznie, na pewno wypróbuję

Congratulations! Good job! I don't understand one thing: did you do any calculations for the pitch diameter of the crown? How can you be sure that the development of the circumference is equal to a whole number of thread pitches? If this were not the case, after the first revolution, the threading tool would perform more staggered threads instead of repeating the first one ...

Super work I like it

very good idea...............

you got all the tools to work with the bearings and you glue them..

Very nice.! U know instead of jb weld like u use on ur bearings u can use medium/semi permanent or red/ permanent thread locker with thread locker u have the option to change the bearings if needed in future with a heat gun. That’s how I installed mine when I was building belt pulley ls for belt grinder and it works perfectly till this day and it’s been over a year now almost daily use.

Ya got a thumbs up from me my friend! 👍. Well done.

You do beautiful work. You're a freaking genius...

Pretty fantastic work, dude! Nicely done! 😃 Looking forward to see where you're going to use it! Stay safe there with your family! 🖖😊

Never use a drill press without clamping the workpiece down

Really cool. So many techniques in this video I wouldn't think of.

Spectacular! Amazing! this will be the base for a lathe divider with Arduino and stepper motor. Compliments for your idea and your work

I would be concerned that the coarse cut of the threads on that bolt would wear down the brass gear faster. Why not cut well-machined threads from scratch?

Тот самый случай, когда лучше не показывать как это сделано.

nice job My friend. So many men have been seriously injured by wearing gloves on a drilll press or lathe. It happens in a fraction of a second.

it's beautiful, I love it

Just great , thnx a lot

did this about 15 years ago to make hobbed gears for 3d printing, no need to cut out the minor diameter, the tap will do it. only difference you did it with a 20mm tap, I used a 3mm tap

I´d so much loved to learn things like that. Metal working is a nice hobby.

Very impressive!

Fantastic project. Looks like you got the start and finish of the threads on the wheel to meet up perfectly. How did you do that?