How to - MANUAL machining SPIRAL

[@hadinossanosam4459]

Very cool setup - while the idea makes perfect sense to me, I would've never figured it out myself if I needed to make a spiral (in particular the attention to the universal joints). Minor nitpick: At 4:56, that is not actually what a helix looks like from the side, a sine shape would be more accurate. A way to see this is to consider a point moving along the helix at constant speed (like the tool when threadcutting), then in the perspective on the right, it would be moving down at constant speed and swinging left and right sinusodially (since it would be tracing out a circle as seen from above), which will trace out a sine shape. But it was clearly meant as a side note anyway and doesn't really matter, and the important points were all clear.

Thanks alot for point that out. Those lines should be the tangent lines not the actual curve of the spiral. For more precise the whole helix is a smooth space curve. Only look like a sine in 2d perspective. I was trying to bring you the relationship of spiral & thread. Lucky me they're pretty much on point. So this's the example of always double check anything from the internet 😆.

[@hadinossanosam4459]

​@ True, the sine only appears in 2D (in particular orthographic) projection. And the point about threads and spirals being similar came across pretty well in my opinion, and that's really what matters here

[@estebangaitan8327]

👍🏼👍🏼👍🏼👍🏼 Esteban Gaitan 😃🇦🇷👍🏼👍🏼👍🏼👍🏼

[@jamespkeane]

Hi. This is an excellent description. I own a BS-2 dividing head like yours but do not have a change gear setup. Can you recommend gear sizes for me to cut? It appears you made yours out of aluminum - is that sufficient?

[@DD-DD-DD]

Your English is positively advanced compared to our Vietnamese . Be proud of your accomplishments in English. 😁

[@mealex303]

yup I can't talk Vietnamese lol

[@Stefan_Van_pellicom]

Very well put !

[@franciscolopes1853]

O que você faz é impressionante, infelizmente não consigo entender sua explicação plenamente porque não sei inglês, veja a possibilidade de colocar legendas em português.

[@DD-DD-DD]

@@franciscolopes1853 Hello friend, I can help. Use the Desktop version of KZbin (won't work on mobile). Turn on captions in English. Click the gear for settings and select "Auto Translate" then select Portugese. Olá amigo, posso ajudar. Use a versão Desktop do KZbin (não funcionará no celular). Ative as legendas em inglês. Clique na engrenagem para configurações e selecione "Auto Translate" e selecione Português.

[@CoincidenceTheorist]

So true

[@garygenerous8982]

Honestly as a native English speaker who interacts with a lot of people from South East Asia, your pronunciation is one of the clearest I’ve heard. Yes you have an accent but everything you said was clearly understandable which is tough to do with technical speech. Aside from that thank you so much for the detailed explanation of your amazing work. I always jump on your videos when they come out and I can’t wait to see what you do next.

[@richardmeyer418]

That is true and it is light years ahead of my usage of his language. He has no need to apologise.

[@Critical_Path]

This dude is one of the ultra rare natural born talents in machining. This guy is evidence of what is possible. Self-taught and already well beyond what many seasoned machinists and machinery builders alike can pull off. Pretty humbling stuff on this channel, I must say. Hats off to you sir. Also your English is more than adequate for your explanations. Very, very good job.

[@DavidGuyton]

We understand your English just fine, sir. I really appreciate the explanations and I hope to hear more in your videos in the future, as I feel it does a great job connecting us to your work. Thank you for sharing it with us.

[@westweld]

Good job man great explanation.......I think your English is better than you think it is

come on sir!

[@crichtonbruce4329]

@ Mr. Weld is correct.

[@artmckay6704]

Cà Lem, you are living proof that genius knows no bounds or limitations. You find a way and no obstacle stops you! You've come a very long way from that first antique lathe that you rebuilt with nothing in the way of tools or experience. You are an inspiration to people all over the Earth! What an incredible story! I absolutely admire everything that you've accomplished! It is nothing short of astounding what you've done with no experience, training, or proper tools! You are the Einstein and Tesla of Vietnam! Wow! You are a treasure, truly a treasure! Thank you for going the extra mile (or kilometer :) and sharing the incredible things that you make! Thank you!

[@bobvines00]

While you say that your English sucks, I think that it made you work harder to make a fantastically clear explanation of what you did. Definite thumbs up!

[@michaelhaunerdinger184]

That was most definitely a better explanation of spirals than any of my teachers at my tradeschool here in Germany could give

[@JuhaErkkila]

I was thinking the same! -But only Finland! ;)

[@ludditetechnologies]

Eeeexxxcelent clear, patient explanation, very calm and easy to understand, you would make a great teacher. (not everyone is good at that)

[@rogerdeane3608]

Your English is NOT CRAP, you explained your build so fluently and easily understood. You are a very gifted person. Thank you for sharing.

[@williammills5111]

This was my fourth time watching this video, and I want you to know how much it makes me smile every time that I see the 6 jaw chuck which YOU built on the Mori Seiki which YOU brought back to life, and the same for the Bridgeport. You have SO much to be proud of, and are an inspiration to the rest of us who are privileged to watch you do these things. Thanks as always for taking the time to bring us along!

Thank you my man 😉

[@IBWatchinUrVids]

Your English is better than many native speakers. Your machining is next level. Please, don't be embarrassed to speak! I will happily work through your language barriers to learn.

[@timmer9lives]

Your English along with your diagrams were excellent. The design of the dividing head plus the drive train and VFD was absolutely BRILLIANT. I AM IMPRESSED. !!

[@braxtonec]

Outstanding work and problem solving. You are in a small group of people that can do this and explain it clearly in a second language. Thank you for sharing your creativity and ingenuity with us!

[@sean11959]

Thank you! This is the most clear and easy to understand explanation of spirals and helical geometry I have ever seen.

[@RRINTHESHOP]

Wonderful job of engineering, thank you for sharing your thoughts and the great build. Love it.

[@MattysWorkshop]

Gday CàLem, very well explained and very well made, you’ve done a great job mate, please keep the videos coming, cheers

[@rlhanks]

Thanks for bringing this process to light. At first when you look at the set up it looks like a Rube Goldberg contraption but thanks to your description it all makes sense. Thanks for all your hard work.

[@ericmorriscompany9648]

Your English is absolutely fine. I don’t imagine that you are surrounded by English speakers. So to be able to explain your setup so clearly is great. I live in China and it took me years for my Chinese to reach the level of your English. This build is on another level. Amazing!

[@rossideas5884]

watch my channel if you like subscribe please kzbin.info/door/6mvqw0k3A2EbIGiB3I99UA there is still a lot of interesting things ahead😊

[@jeffwood8109]

Has anyone told you lately you're a genius? Just in case they haven't, you're a genius! As always your work is amazing.

[@GenericAnimeBoy]

Thanks for the follow-up, totally worth the watch. The note about the universal joints not being constant-speed was an "oh, I hadn't thought of that" moment for me.

[@anmafab]

Ca Lem, you are a great teacher! I had no issue understanding the concept of what you built. I'm sure the maths was substantially harder and the calculations you went through to get the whole build working likely very time consuming. Hope you voice over your work more often in the future! Thanks for sharing and looking forward to seeing what you do with your new toy

[@TerryEinstein]

Your skills are amazing. Watching you work is always a treat! I can't wait to see more videos in the future. Keep up the great work! 😃

[@OnnoBenschop]

This is absolutely spectacular! Thank you for your explanation. Your English does not suck. Your videos are inspiring and I am looking forward to seeing what your next project is.

[@trashes_to_treasures]

Man, remember your English from 2-3 years ago... you improved like CRAZY!! Be proud of yourself. You did an amazing job, both in learning a new language and machining. Most of us won’t even make it to one of those disciplines... ✌️😎

[@dutchdb]

Don't waste time doubting yourself! There are lots of people on line who will be happy to do it for you. I want to let you know that I very much appreciate your videos. I actually learn from you and that has been a huge boon. I genuinely understand spirals and pitch better now, purely because I watched this one video. My thanks for taking the time to make these videos, overcoming your own self doubt. You are making a difference in the world.

[@InheritanceMachining]

I was hoping you would come back and show how you managed the spiral. Great job explaining the setup and the special considerations. Definitely the coolest machining project I’ve seen lately! Looking forward to the next one!

[@Mad.Man.Marine]

Fantastic job man!! Good on you for taking the time to explain it all as best you can. It was definitely clear enough to easily understand what you are trying to convey. Nice work.

[@frodobaggins169]

That video was inspiring. Your skills are very good and your content is always interesting. You have overcome the language barrier with ease! Thanks for your time spent. I hope to see you soon.

[@williammills5111]

Thank you, brother, for taking the time to make this video. The chuck build was fantastic, and this explanation of the thinking that went into generating the scroll is fantastic also. Your English doesn’t suck- the explanations are spot on and very thorough. Well done!!!

[@matthaushetzenauer2591]

This is 1 of the coolest things I have ever seen done on a manual badass bro.

[@josephlovell6951]

As I told to before you can do anything you put your mind to.as long as you don't give up... grate job my friend. So proud of you.

[@AnthonyHandcock]

Your English most certainly doesn't suck. I'm English and you express yourself in English better than a lot of my fellow countrymen and women.

[@StormbringerMM]

The diving head and rotary table I have came from a machine built in the 40’s I think that actually had the gearing attachments to do these things using the power feed on the x or y axis. Very cool work you have done - the truth of mathematics is pretty cool to see it in action.

[@ronwhite6719]

There is no need to apologize for your English. You're speaking very well. Great engineering and fabrication of the gearbox.

[@pieterpan]

Very nice built. I don't know if it really matters (probably not so much because the result obviously works), but these universal couplings (cardan mechanism) introduce some inconsistencies. They do not transfer rotational speed constantly over the circumpherence.

[@d00dEEE]

So, there's another project for Cà Lem: make some small constant velocity joints. 😀

[@standardtoaster10000]

That's the first thing I thought when I saw the setup, its pretty good (good enough for a chuck since the inconsistencies would be equally spaced) but not suitable for high precision work like if he was making a scroll compressor.

[@MF175mp]

If the angle in both ends is kept the same, it will be very close.

[@d00dEEE]

@@MF175mp Yup, he mentions that at the end of the video. Hooke joints' accelerations cancel when the end shafts are parallel and the joints are in phase. If you want to run in a non-parallel config, say to hob a helical gear, then you need CV joints, no way to make a Hooke work.

[@pieterpan]

@@d00dEEE even if they are parallel, there is still an inconsistency in the rotational speed. It is minimal, but it is there.

[@hashgeek929]

I really enjoy videos about making tooling more than videos about making a final product. They are about building capability. Keep these coming!

[@trifonplac]

As an mechanical engineer who happened to be working for an industrial automation company-take my congratulations! If i had a second choice in life i would do what you are doing! You won a new subscriber with the first video I watched.

[@bustednuckles2]

Mind boggling how you figured that all out and then actually put it together. You are one brilliant fellow.

[@hashgeek929]

Your English is great. Your explanations are always direct and concise. That is something that many KZbinrs cannot do, even in their native language.

[@caseyroman58]

You, sir, are one clever and industrious fellow. I've watched your channel's evolution over the years and you've come far. Congratulations! Ol' YTU (KZbin University) is a wonderful resource thanks to all the content creators willing to share their respective knowledge and skillsets. I thank you for your contributions. By the way, your english is fine, better, actually, than many born to it.

[@BROCKWOOD64]

Best 'now I can see' moment in ALL my attempts to understand this. Anyone that speaks English as a 2nd language is smarter than most of us Americans - because we haven't mastered the language very well at all ;-)

[@chrispoirier384]

Your English is just fine. What you are saying is far more important than how you say it. You are fearless. I’m always impressed with the excellent work.

[@EDMDoc]

As an old Canadian Tool & Die Maker you did a spot on job explaining this to the learners. People, pay attention to this guy and you will learn.

[@HanstheTraffer]

Very well done! Your explanation is perfectly clear and informative. Thanks

[@Kasekraner]

So glad you addressed the phasing of the universal joints!

[@James-fs4rn]

👍 very creative as always. Like to see any math calculations you had to do with your projects. Thanks for sharing!

[@kitmaira]

Not that one in a thousand of us will attempt something like this, it would be cool to see the list of other KZbinrs you researched to get these ratios figured out.

[@USM247]

Your English is just fine. I found your explanation quite educational. I enjoy watching and listening to your work. Thank you.

[@chrisburbank6484]

once again your work is just incredible. Your inventiveness and innovation to get something done is just awesome! what kinda motor and controller did you use?

[@silvaniosilva3292]

Esse cara merece um prêmio de torneiro mecânico e gênio 👏👏 é uma arte que mais admiro é gosto

[@theonlybuzz1969]

Ca Lem, your English doe’s not suck! Your explanation for your methods is more than acceptable, if I was in a position to employ you for your workmanship I would have, but you have something that a lot of people don’t, you have ingenuity, to think and work things out, many people don’t have that gift, think positive. Regards. Phil 🇬🇧

[@wyattselleck7236]

Excellent video ! I didn’t and never had any issues with your English. Your English is a lot better than my Japanese. 🤣😂 I can’t wait to see your new project. Thank you for sharing.

[@davidfanner]

*Vietnamese

[@c25ng]

Excellent work and great explanation on what i find a difficult topic to conceptualize, much less visualize. ALSO i can't wait for what you're going to do with motor bike!

[@robinsage1964]

Thanks for sharing your skills with us and your videos are inspirational to many young machinists. Have a great day Ca!!!!!!!

[@Chris-bg8mk]

Such a masterful machinist, and humble to boot, your English is fine brother, better than plenty of native English speakers! ;-))

[@curm1778]

Nothing wrong with your English. I understood you perfectly. Outstanding job. I look forward to your scooter re-build. I fully expect it to be one of the best on KZbin.

[@wayne5022]

Brilliant work, thank you for sharing. All the best to you.

[@bangy55]

Why do I feel like I just watched a Richard Feynman lecture and understood every word? This man thinks his English "sucks." I can't understand a word when my primary care physician speaks, but a 33-year-old self-taught machinist in Vietnam spends 15 minutes explaining technical mechanical theory nails it without one extra word. I couldn't have done it. Amazing!

[@BernardSandler]

Well done taking the time to explain something complicated. You did an excellent job. Excellent practice!

[@tiredoldmechanic1791]

It's incredible what had to be worked out in the past to mechanically make shapes when it can now be done through electronics and changed in seconds.

[@ianbertenshaw4350]

Fantastic video and great set up ! Your English is a billion times better than my Vietnamese! Your ingenuity always amazes me !

[@andyZ3500s]

Nice workmanship and explanation of your work. Hope you're eyes aren't bothering you.

[@pgiamel]

Hello, the construction of the horse head was really fantastic, it would be nice to know the chain of gears and their teeth, keeping in mind that you must have a 1 turn advance of the igni 4 mm divider. Thanks for the video

[@dizzolve]

your time taken to explain all this is appreciated ....... nice video editing and explanation of methodology

[@ytmarten]

Your videos are always interesting, and your projects are very impressive. It's nice to hear you talk in this video, and you certainly shouldn't be ashamed of your English. Thank you for sharing your work!

[@Ryan-dz3jo]

Love your work Ca Lem, I hope everything is OK with your eyesight. Make sure you ask for help if you need it, you've given a lot of your time and knowledge and many people appreciate your talent.

[@465maltbie]

That really is an impressive accomplishment, not only to create but learning to do it and solving each problem. Thanks for sharing the results of your labor, you never know how many others you might influence to take action and try something new even if it is difficult. Charles

[@kindabluejazz]

Your English is entirely adequate and functional. I had no problem understanding you, and the concepts you explained were very well thought out and clear. Just FYI the word 'ratio' is pronounced like 'ray-shio'. It's related to the word 'rational'. That was the only word I heard that stood out and made me think, but it was obvious what you meant in context. Thanks for all you do.

[@badmonbadmon6483]

Очень точный анализ спирали Архимеда. Браво!

[@bchdsailor]

You never cease to impress

[@RobertLBarnard]

Gratings from the USA, We are all learning, friend. Thank you for investigating and sharing what you've learned, and what you are doing with your knowledge. Impressive machine shop, by the way. I am so delighted to see tour video and find your channel! I too want to make odd shaped objects like gears and spirals.

[@Neptune730]

Very cool. I bet Clough42's Electronic Lead Screw could be adapted to a mill to do the same thing.

[@TheHailacopter]

Your English pronunciation and engineering skills are similarly impressive. 10/10 in all respects.

[@CraigsWorkshop]

Great explanation Ca Lem. Awesome machining and designing, I am looking forward to seeing some work on the new toy :)

[@DanKoning777]

Cà Lem your English is great, just like the work in your videos. I understand everything that you're saying. *Well done and God bless.*

[@garybooth2902]

I live in Vietnam and like tinkering with bikes. I've always wondered what you could do with a bike if you set your mind to it. Can't wait to see what you produce, I'm sure it will be excellent. I'm sure you've watched Allen Millyard already. Amazing engineering creativity.

[@Helikopterpop]

What you do maybe isn't all that complicated once the mind and ambition is present. But hell, you got so much energy and so much strive to make things that is complicated a goal to overcome. I am deeply impressed with your skill of machining. And you have a steep leraning cuver, and at the same time you make videos and edit. Cudos to you, I wish I had 1/1000 of your energy man!

[@darrellbriggs6674]

Great to see you back, love to see more content from Australia

[@lohikarhu734]

You are a pretty smart guy... necessity is a mother... of invention... And, as another has said, your English pronunciation and vocabulary are much better than *MANY* others!

[@bearsrodshop7067]

Very interesting concept. Looks like a lot of math and time went into this build, Bear

[@patricksullivan9951]

After watching the 6 Jaw Chuck videos, NEW Subscriber! I enjoy your approach to machining. Your explanation was terrific, I got it! Thanks for sharing!

[@davesmith9325]

I always look forward to your videos. Calm presentation, superb work and photography!. Looking forward to what you do next. Hope your eye is OK.

[@georgepretnick4460]

Your English is better than many native born Americans, Brits, or Aussies. Trying to understand American hill folk, Brit cockneys, Aussie brogans, or rural Scots can be almost impossible.

[@JMassengill]

You explained it great. Your English is fine. Great video

[@purvel]

Can't believe I missed out on this video for so long! Love your setup, and the explanations. I enjoy your usual video style a lot, but it was a real nice surprise to hear you speak! (:

[@dcw56]

Your English is wonderful. Thank you for showing us your excellent work!

[@NateD77]

Your lathe is beautiful! You did an amazing job on the restoration. I have a very similar clone of your lathe in far worse shape however.

[@rallymax2]

Hi Lem. Great job. The paper spiral example was perfect! You’re my Vietnamese and English hero.

[@Chiro75]

You’re the mad scientist of machining and it’s awesome!

[@oldmetalmachines2094]

I think even ToT could follow along. Lol. That was great 👍. You are very smart and left brained. Lol. I couldn't have built that without your tutorial and probably still can't. But I understood it and learned something. Great job

[@harlech2]

Ca Lem, your English is fine, mate trust me. Your pronunciation is awesome and your vocabulary is very good.

[@OG1]

Man I really love your videos and appreciate them. Yours, This old Tony and Abom are my reasons for keeping YT Premium.

[@rescobar8572]

THANK YOU FOR YOUR TIME AND EFFORT!! 🙏🏻

[@the_real_randall]

Amazing! And your English is just fine in case you were wondering. Thanks for sharing your knowledge.

[@unshanks]

Love your videos. Always delighted to see them pop up in the feed. Looking forward to videos on the new toy too!

[@MrMoeRod]

Great work! You are an inspiration and i love when you share your projects with the world. Keep it up!

[@jimsvideos7201]

Your 3D drawings are very good and your English is fine; I respect anyone who learns it as a second language.

[@etaunknown4024]

Trust me, anyone that's advanced enough to be trying to mill a flat spiral square acme thread groove doesn't need to hear anything anyway. They just need to get a glimpse of the right moment in the process that they can't get their mind wrapped around quite tight enough lol. Your English is fine anyway so I wouldn't worry about that, though I'd try explaining things less of just with fewer words in general just because most people don't absorb information like that. Least not ppl that are more mechanically or artistically inclined, and this may be machine shop, but what you're doing is no less art even if its mechanical art. You'll make a wicked engineer and of that I have no doubt!