🤣

i guess yor right, he could even scrap the lathe

Hasta ahora va por mas de 20 mil dolares.

You have touched on only a few "concerns" .....which I completely agree with ......but my fundamental question is ....what's the point of threading with a tap? Why not just "single-point" make the thread and be done? This will generate a far better thread. .

​@@taxicamel Check out my latest video of how I cut metric threads on a imperial thread cutting lathe. It will help you understand the point of this video.

Thank you! Somebody with some common sense. This is like backyard bs. Not actually machining

Is that just for funny!! Very old method in machining technics, but I learnt something. Congratulation!!

I also pointed out elsewhere in the comments, between the taper of the tap, and the fact that the first thread is being cut continually while the final thread only gets a brief glance at the cutting edge, his threads ended up being tapered. It's no surprise that the nut was loose af initially, but stopped halfway down the threads.

Dude that's exactly what I thought. Just a total waste of time....

I'm a retired machinist so crude its unbelievable that they really think they are doing good work the nut was just hanging on because of gravity pitiful

I don’t know I like a demolition derby too its destructive

I've only been in the game for 20 or so years, and thought the same thing....

Да вы очень правы !

Well he is Asian,, so many Asian people has tough magic hands😅😅

Oh puhleeeze more safety Nazis

LOL i saw that and thought to myself well say goodby to your fingers

In other words, he's doing it the hard way!

I'm still trying to put it together in my mind of how threads on each piece stay lined up enough to make multiple passes. The only thing that clicks is the speed of movement must be the same for each pass.

@@Wildwwill power traverse

@@Wildwwill The lathe has been set to do screw cutting at the correct pitch. The lathe also has a dial on the apron that indicates when the leadscrew can be engaged so that it picks up the same threads each time.

@@rolandburisch9489 Interesting.

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????????? Far easier to generate the thread with a threading tool. A complete waste of time otherwise. .

i use a die, but i think they love it the hard way....

He use the 60deg tool for simple machining diameters...

That would have just been way too easy.

Because he is pretending to cut a 3/4" BSW thread which, as everyone who has cut threads knows, has a 55 degree thread angle.

Одним резьбовым резцом работать при разных операциях будет грустно, как не ставь. Метчик предназначен для нарезания внутренней резьбы, а резец для наружной (которым он протачивал)😢

даже я(не токарь) заметил парочку.

I certainly don't see one. Especially when you see how messed up the form is when he's putting the nut on it. You can see the part drooping in the front. I feel like they're fighting tool deflection because of the length of the tap. If someone wants to work in fractional instead of decimal, they should have just become a carpenter. Stick to spice racks.😆

@@mikemcgannvoiceover ^ Gold 👍

The tap was tapered so definitely not getting full engagement. Also there was definitely some deflection going on. It's a neat trick but not practical at all. A die or single point threading tool would be the way to go. The surface finish on this thing is horrendous.

????????? .... You need to stop and think on your own. Far easier to generate the thread with a threading tool. A complete waste of time otherwise. .

No coolant used in the hole process

@@johnsplaine3236 You dont need typically coolant for external threading. Maybe a little lube on the last few passes but coolant isn't doing much if theres nothing to cool

In order to grind a tool you need a 60deg template to gage it off of, maybe he doesn't have that? Maybe his lathe doesn't have a compound slide, and maybe nobody taught him how to do that.

@@integr8er66 Compound slide is clearly visible 5 seconds into the video again at 2:14. He has to engage the half nut to advance the tap to try and cut the helix correctly. The blue clearly shows thread is being cut unevenly so nut spins on and comes to an abrubt halt. Pause again at 9:25 and you clearly see the first few threads are wafer thin compared to the rest. This is caused by not having a single tool cutting the helix. I guess if ifs and buts were candy and nuts, we'd all have a Merry Christmas.

I question your response and in a polite quizitive way....On my LeBlond lathe, when I chuck in my thread cutting tool on my tool post, it is no different than the videos tap....just as long as the thread pitch per diameter of the work is the same, its just that the video is capable of having more "teeth of the tap" cutters in a row instead of single. When I cut threads, I can slow or speed up my chuck ( rotational ) speed per type and size of material I want to thread. Example: If I want to cut 1/2" -13 ( nc ) threads, I set my carriage speed for that thread pitch, so the carriage is going to move the same speed regardless of what is in the toolpost ( tap or thread cutting toolholder ). IF my chuck spins faster, then my carriage runs faster too, but still in the same ratio to retain that 13 pitch. Also look up Vardex threading inserts. These are actually doing the same thing as the tap is, only the inserts are mounted in a toolholder, similar like inserts for an indexable endmill or facemill. I think the reason the nut did not go on the full way is either : 1.) the tap was not positioned perfectly parallel to the stock or 2.) another pass should have been made to "clean up" the threads, or 3.) he did not have the O.D. cut down enough.... or 4. ) the chuck is not dead centered ( meaning the shaft is "camming" ) or he has spindle and bearing wear or 5.) the tap is worn . I'll agree, that a die would probably make up for these errors especially in concentricity, but this is not a bad idea to try if a guy was in a pickle and did not have any special tooling on hand, and had to make do with what he had say for like a "meatball surgery one up fix on a late night or weekend". I would not do any "production" work this way.

the nut got stuck because the thread is not finished. The second half did not see the end of the tap, you still see blue ink there.. The tap is conical, and to finish the piece, you'll have to pass the whole length, which is impossible with this workpiece.

@@user-bf9rl3vw4q резьба рваная метчик надо завалить немного

@@user-bf9rl3vw4q ну а как он подавал метчи'к 🤷‍♂️

@@user-bf9rl3vw4q вот и я о том же

I found this in my saved links. It essentially shows what I was describing. kzfaq.info/get/bejne/nqqRgdGhxtqodKc.html

The lathe just wasnt made to be used that way....

это все от бедности, обрати внимание что он использует резьбовой резец вообще для всего, потому и такое решение.

He is pretending to cut a thread using a 3/4" BSW thread tap with a 55 degree thread angle.

LoL, my thoughts also, but definitely looks dangerous if it comes loose.. 😱

Not sure it’s faster than putting it in a milling vise and making a few passes. Also, a lot safer on a mill. But, if you ain’t gotta mill, this will work.

@@TBrady26 indeed, many milling operations can be done on a lathe, one way or another. (Frequently, not quite this way, but hey…)

It's not safe, use a four jaw for pete sakes.

@@TBrady26 no machine faster than lathe ! Try it u will see 👍

True, but if you want a non standard thread you won't find a die that will do it, say you want a 1" 20 TPI well you can use a 1/2 - 20 tap on a 1" dia piece of stock and get it done. Yes single point would be better if you have what you need to do it that way, but sometimes you don't have every tool needed

stpidity in brazil has no boundaries

Same thought 😮

@@anthonycrittendon6872 Cheers..🍻😁

Yes but for how long?

хм... и на металлоломе можно делать классные вещи, ну когда знаешь все болезни станка и компенсируешь их. но так то да.... тоже посмеялся когда он палец вверх показал)))

More likely a hand reamer undersized to the H.I.H.th degree. ( Hotdog In Hallway)

Probably because he doesn't have a die or even a tap in the needed sized but he does have a tap that atleast is his required pitch. Is a good idea for a one off screw or nut in a pinch with stuff that'd be on hand and little to no time to wait for delivery of the correct tools

It didnt

и не малый шанс получит в лоб сломавшимся метчиком, или деталью которая при таком зажиме может очень легко вылететь прямо в лицо.... очень круто... ага))))

И даже есть резьбовой резец! Но! Резцы надо уметь точить,а практически во всех роликах от этих работяг используются резцы без какой либо заточки.А вот метчик имеет идеальные углы заточки .

Любой токарь может заточить резьбовые резец. Образец угла заточки сам метчик.

@@user-pn8pz3bv4i я видел очень много роликов о пакистанских токарях....и из сотни только у двоих были более - менее заточенные резцы....причем обычные ,проходные. Так ,что утверждение о том,что любой токарь может заточить резец ,для пакистанцев недействительно. А для заточки резьбовых резцов обычно используются специальные шаблоны,которые в кругу токарей называют рыбкой.

Это когда делать нехрен.

Agree... 😊