Roll Shaft | New Thread Gage 2"-4½ L.H. | CNC Machining

[@forrestaddy9644]

You do nice work, Chris. Efficient, ordered, accurate, consistent, and, in effect, esthetically pleasing to those with the eye to appreciate such things.

[@marciomusto9264]

Duas paixões para mim, usinagem e guitarra no final para fechar com chave de ouro.Parabens pelo canal,show!!

[@shawnhuk]

Loved the “oops, that’s a left hand thread” slight of hand lol.

[@ChrisMaj]

Habit, before the brain catches on, it's L.H. thread 😅

[@rescobar8572]

You make this look SO EASY! Great job and video from a dam Great machinist! Thanks for sharing 👍

[@ChrisMaj]

Glad you enjoyed it.

[@rescobar8572]

@@ChrisMaj I learn from them. Thank you for sharing your techniques!

[@BruceBoschek]

Bravo! Beautiful work with a big, blind, left-hand threaded hole. Great job, Chris.

[@ChrisMaj]

You just have to trust yourself that you entered the numbers correctly and hit that start button. 😅

[@johnlawler1626]

Turned out well, thanks for sharing 👍

[@변길상-s5g]

대한민국 한국기계공작하고 똑한네요? 한국기계 잘했습니다. 기술전수해 주고 쫑나고 돌아왔네요 .참 잘했습니다.

[@schlaznger8049]

Your machine handles some heavy cut's. Nice job!

[@captcarlos]

Nice job Chris. I miss CNC threading. Although, it's more exciting to do internal left hand threads on a manual lathe!

[@parnuzutech]

good job you are awesome friends 👍

[@paulrash2886]

Top Hand Quality Work Chris.

[@ChrisMaj]

Thanks 👍

[@warrenjones744]

I am pretty sure I have said this in the past, You and your company make some pretty interesting big parts.

[@ChrisMaj]

I appreciate that!👍

[@zoltannagy1813]

Beautiful work Chris. That left hand blind hole thread would have scared the shit out of me (on a manual lathe)

[@mikeb1520]

Why? I thread internal right hand threads that way all the time, threading away from the chuck is a piece of cake on a manual lathe.

[@ChrisMaj]

I've always found it easier threading blind holes inside out, especially small diameters, where you can't really see anything. Honestly I'm surprised this isn't done more often, especially on manual machines without a kick out. Machining to a shoulder can be intimidating and exhausting for even the saltiest shop dog, all their bravado asidely. (Yes, I've done plenty of manual machining before youtube and cell phones 😅)

[@joseamerico2612]

Beautiful work, Chris 👌👌🇧🇷🇧🇷🇧🇷

[@ChrisMaj]

Thank you so much 😀

[@chienmt2910]

Perfect ❤

[@theessexhunter1305]

That thread was a dogs nuts of a fit Chris.

[@ChrisMaj]

😅 thanks.

[@josefanhani1270]

Tenho muitas saudades dos meus tempos de torneiro mecânico,estou com 71 anos mais ainda sei trabalhar.

[@marcioroberto7423]

A VOCAÇÃO ESTAS NO SANGUE, QUANDO GOSTAMOS DE ALGO, FAZEMOS COM MAESTRIA , ISSO NAO SE ESQUECE JAMAIS...

[@CncFrezar]

An interesting preparation for falling chips👍😃

[@ChrisMaj]

Makes clean up a lot easier 😅

[@truegret7778]

Beautiful precision work, Chris. On the long run, do you have to change inserts to hold the 6.500"/6.498" diameter? You really do amazing work. Very hypnotic and impressive. Thank you.

[@ChrisMaj]

Usually, one insert corner will last for the entire piece, well, most of the time.

[@CraigLYoung]

Thanks for sharing 👍

[@ChrisMaj]

Thanks for watching

[@Spikeydelic]

LOOOOOL @11:20 I actually felt phantom vibrations in my feet as ther big drill went in.. Am i brainwashed by my job? :D again.. your videos are amazing!

[@christianfeldmann8287]

What Brand are the Inserat? Nice Chip flow!

[@ChrisMaj]

Roughing- Kennametal, finishing- Korloy, threading- Iscar.

[@kevind1865]

Does the lathe have a ball screw for X and Z or does it use (edit) a lead screw or helical rack with scales and backlash compensation?

[@ikbendusan]

ballscrews, of the ground variant

[@ChrisMaj]

High precision ball screws for both axes.

[@juliusmilo5959]

Vymakané...Nice...

[@antwanski88]

Honest question. A shaft that long, what was the first operation. How did you put the center in. Did you have to use a different machine before setting it up in the cnc lathe?

[@ChrisMaj]

The centers were done on a horizontal boring mill, and the rest is in the video.

[@antwanski88]

I figured that was how you started the shaft. I run a doosan 5100lmb that does not have a steady rest, yet. I've had to use a manual lathe for the centers or a boring mill. Thanks for the answer!

[@eviethekiwi7178]

do you drill by hand with the wheel on the tailstock? or do you lock it to the carriage and run it as a cycle?

[@ChrisMaj]

If I'm doing only one piece, I'll go by hand. If I'm doing more parts, then I'll use my toolpost attachment .

[@markanthonysmith413]

Great video Chris, for a job like that how long does it take start to finish, Regards Mark

[@ChrisMaj]

It's a little different for production work and one-offs. Us being a repair machine shop, sometimes I'll start a job then take it out cause something urgent comes in. I have to setup everything, write the program, and finish the work. Making just one piece always takes a little longer cause you have to check the program as you go.

[@russmgd]

What brand and model lathe is that? Nice work.

[@ChrisMaj]

Hankook PROTEC-9NC

[@SR-ml4dn]

Superior craftsmanship, like the runout was zero, not easy to do.

[@mattpinto2351]

How much stock do you leave before the finishing pass on the tight tolerances?

[@ChrisMaj]

Most of the time, I'll leave 0.100" (2.54 mm) on diameter. On tight tolerances, I always take two cuts. First, just to make sure I'm not getting any taper, and then I'll do the final cut.

[@mattpinto2351]

@@ChrisMaj you are a master at your craft, and I appreciate your response

[@Michal_Sobierajski]

Nóż z płytką przekrzywiasz z jakiej przyczyny? Dla lepszej powierzchni?

[@ChrisMaj]

Tak jak mowisz, przy toczeniu czołowym od mniejszej średnicy do większej wychodzi lepsza powierzchnia.

[@Michal_Sobierajski]

@@ChrisMaj tam oczywiście miało być "z płytką T" ale nie wiem dlaczego nie było 🤷🏻‍♂️

[@pulsenpal7882]

do you also use full profile thread inserts?

[@ChrisMaj]

No, never. I like these much more. I can do any thread, any pitch with the same insert.

[@ehamster]

Have you heard from Dave Wilkes? (UK trepanning guy). Haven’t heard from him for a while. Hope he’s OK

[@ChrisMaj]

No, nothing. He didn't post anything for about 2 years now, but I saw his comment on Titans a while ago, so I guess he's alright. I did ask him how is he, but he didn't reply back.

[@taimoorulhassan1720]

Which software you use for programming

[@ChrisMaj]

Fanuc manual guide (conversational programming)

[@jimsvideos7201]

As threads go, that left-hand one is the strangest I've ever heard of.

[@TheMetalButcher]

Standard UNC pitch.

[@ChrisMaj]

Our minds are not used to left-hand threads, I guess .

[@chatnik78]

Hast du vor dem linken Innengewinde einen Freistich am Anfang gemacht oder nicht? Weil du ansonsten mit der Gewindebohrstange immer ins Volle gestochen hättest. Deine Videos sind wie immer eine Freude 👍😉

[@ChrisMaj]

Ja, es gibt einen Hinterschnitt auf der Rückseite, nur um es dem Gewindewerkzeug etwas leichter zu machen.

[@lumpyfix8124]

Thats purdy

[@migueljosemartinez6734]

What kind of insert use for thread?

[@ChrisMaj]

Iscar TIP 5MT-0.25 IC908

[@elanjacobs1]

No FIX8 this time?

[@ChrisMaj]

That's only for BIG JOBS 😉

[@D08048]

👍👍👍🤝

[@adam-1112]

Przyznaj, że lekki stresik był 12:58 😅😅

[@ChrisMaj]

Głębokość była sprawdzona bez obrotów przed wciśnięciem zielonego guzika 😅

[@변길상-s5g]

대한민국이 왜이렇게 된는가 설없다.

[@MrKotBonifacy]

WARNING: this is a random auto-generated comment meant only to bless YT algorithm. DO NOT READ IT. ;-)

[@ChrisMaj]

Bad bot. 😅 YT algorithm is really messed up, I'll tell you that much.

[@TL....]

wow krzychu nie zle zdrowko

[@ChrisMaj]

Dzięki, "zdrówko "w poście, no wiesz co 😅😉