This precision is very fascinating. From a rough start to perfection. I am very impressed.

@ChrisMaj

3 жыл бұрын

Glad you like it!

first time that I seen anybody using a Pi-tape to measure thanks for the video

@ChrisMaj

3 жыл бұрын

Well, thanks for watching 👍

@dauber1828

3 жыл бұрын

@@ChrisMaj I remember number years ago Keith Fenner was talking about those tapes but then really get into that much detail if I can remember but thank you keep up the great videos

Been there. Squirrely forging on an antique machine to produce a frail part full of close tolerance fearures. Tip, I used to duck tape the end of the Pi tape to the part and jog the table around full circle. Untape the tape and take the reading. The tape takes its wrap under tension and full control

@BigSkyCurmudgeon

2 жыл бұрын

i used about 12 indicator magnet bases located on a magic market line drawn on the circumference of a 160 inch spur gear once. pi tape sat on the bases located on the line. gotta do what ya have to do to get the job done. Af. engineering right?

I like that you show how you measure the part. Cheers,ed.

Awesome Part Chris. Thanks for sharing! :)

Props to you for being so patient with that crooked forging. I've always heard time is money but trueing that piece of crap would have made me nuts

@devonmarshall2330

2 жыл бұрын

Sorry to be off topic but does anyone know of a way to log back into an Instagram account? I somehow lost the password. I would appreciate any help you can offer me

@douglasjamison4936

2 жыл бұрын

@Devon Marshall instablaster =)

@devonmarshall2330

2 жыл бұрын

@Douglas Jamison Thanks so much for your reply. I found the site thru google and I'm waiting for the hacking stuff now. Looks like it's gonna take a while so I will reply here later with my results.

@devonmarshall2330

2 жыл бұрын

@Douglas Jamison It worked and I finally got access to my account again. I am so happy:D Thanks so much, you saved my account :D

@douglasjamison4936

2 жыл бұрын

@Devon Marshall Happy to help :)

I do this day in and day out on manual Webster & Bennetts 36"-60" chucks, great fun!

CNC and a great machinist like you is a awesome .

Excelente trabajo, Felicidades!!!

Beautiful, it reminds me of a elaborate steam engine tire

Damn, those chips from that last grooving op look lethal.

@ameunier41

3 жыл бұрын

One chip to rule them all

I learned a new word today..circularity . Thanks!

First class job mate 👍

@ChrisMaj

3 жыл бұрын

Hey, thanks for watching glad you enjoyed.

Nice work. I wasn't surprised it went out for stress reliving after roughing. Tricky job.

It looks like a segmentel ring I would machine at GE power systems. I haven't used a pie tape since I retired from GE

@trace12345678900

3 жыл бұрын

That place must be full of rings! I have been working on about a dozen different rings for GE right now, the biggest one is only 33” OD

@thomasgiovine2211

3 жыл бұрын

@@trace12345678900 I used to do there frames thay were fun forgings then cleaned up then cut in half and pined and bolted back together and machined it had a bunch of angeles and grooves the groove on top got 1/8 X 10. Stanless friction roles into the grove and had to maintain . 015 between then machined on both sides with angeles I miss working on them

@32jdmiller

3 жыл бұрын

Place I used to work made big segmented rings for GE we had a Betta VTL from the thirties they did all the turning on. We would start with a ring of a smaller diameter and cut it into a bunch of brick size pcs. The would get rough machined and then assemble into a larger ring and turn on the VTL

@douro20

2 жыл бұрын

That large Pi tape probably cost close to 300 Euro...

Wow... really impressive!

Fun reading all the GE guys' comments. Real nice parts. Used to work at Mohave Generating Station of Southern California Edison (Laughlin, NV). 825 MW cross compound turbines. I never could understand how all the casing internal detail was machined. GE man told me, "lt's not the problem you think it is. Just finish mill the casing castings (May have been forgings. Not sure. I think steel castings tho. Steel casting is a bi___, I read) on a big planer mill. Drill, mill all the casing bolt holes. Then do rough machining on only the halves. Then torque 'em together and do all the finish machining. Nothing to it!"h

Jesteś kozak jak robisz te wszystkie rzeczy z palca i to na fanucu, pozdrawiam

@ChrisMaj

3 жыл бұрын

Fanuc nie taki zły

Man, please... Put your cam on a tripod and let it run... 3 hours, 5 hours, 7 hours... i would watch every minute. Your videos are the best, but waaaayyyyy to short.

@ChrisMaj

3 жыл бұрын

Haha, thanks man. I don't want to bore you to death.

Nice finish on there.

This looks real close to the part we made for GE Medical (MRI UNIT) back in the 80's.

@ChrisMaj

3 жыл бұрын

Most of my work is for steelworks.

@thimitri1

3 жыл бұрын

@@ChrisMaj and I thought it was for a SpaceX rocket...

Reporter: how many experiance/skill Do you Have in tourning Chris maj: yes

Very nice work!

@ChrisMaj

3 жыл бұрын

Thanks for taking the time to watch the video.

@briangarland9883

3 жыл бұрын

@@ChrisMaj Where you're working at reminds me of the first job I had working in the machine shop that made parts for steel mills and heavy industry. Those were good times! Plus it's awesome to see a fellow craftsman at work!

@ChrisMaj

3 жыл бұрын

@@briangarland9883 Yeah, that's what we do, steel mills and heavy industry.

Mécanique de précision et de haute technicité

Карусель, карусель, Кто успель - тот присель, Пракатись на нашей карусеееель....

As soon as I read "Anhängebohrung" on the blueprint, the numbers looked German as well :) Grüsse aus CH!

@ChrisMaj

3 жыл бұрын

Das Unternehmen, für das wir viel arbeiten, hat seinen Sitz in Deutschland.

Ring squealing like crazy. Gotta go easy on it. Clamps - good idea.

Köszi!👍👍👍

I love these videos but I have no experience, do you actually perform these cuts without coolant? Ty

Chris, for the OD maybe you can use a blade mic to measure the thickness of the wall, pretty sure you got that ID much easier. And then, ID + (wall thickness x 2) = OD

@ChrisMaj

3 жыл бұрын

Yeah, I know that trick too 👍

@mohsinashiq5017

3 жыл бұрын

Hello

@tuantq06

3 жыл бұрын

@@LegendLength yeah. Most machiners know how to do math. They just don’t know the math.

@andreweppink4498

3 жыл бұрын

@@tuantq06 - Haha. You never know. My Son runs a hi end cabinet and furniture shop. Got a man from the union, didn't know how to add and subtract fractions! My Son was patient for awhile but finally told him, "Man. You gotta learn fraction manipulation. You can't call yourself a cabinetmaker, woodworker or millman unless you can do it.

@backho12

2 жыл бұрын

Some folks just don’t understand fractions and decimals. Must of had a bag over their head in fourth grade. Maybe they just need a kick in the ass!

spot on as always...are you making curly fries on that pass? lol Stay safe One question is how much will a part like that " move " with you hogging out the ID

@ChrisMaj

3 жыл бұрын

I think it was about 0.050" after roughing, but that's mostly because the jaws were pretty tight.

Da ate gosto de ver.

Nice

how much "out of roundness" did you encounter? same with parallelism? was stress relieving a step not shown? additional...i bet that thing resembled a "Pringles" potato chip when done, warped and egg shaped.

Good 👍👍

Nice :)

3:02 - How do you avoid deflection from the chuck jaws, producing an o-o-r part? Ooops. looks like you answer that question at 6:09 5:00 - Really small cutting area to avoid chatter? 7.05 - I see you don't care whether it's imperial or metric either. 8:34 - Carbide inserts do not like interrupted cuts? 14:25 - You let it cool first?

@ChrisMaj

3 жыл бұрын

Man, you just answered all of your questions there 👍

@currentbatches6205

3 жыл бұрын

@@ChrisMaj Chris, that's me hoping I've learned from people like you; I passed the test.

Is this the airlock for the rocket you are making

@ChrisMaj

3 жыл бұрын

I wish 😅

Great stuff, Chris, as always. I’m curious - what determines when you use lubricant/coolant? Is it related to speed and feed? Or desired/required finish? Specific tool geometry? Or something else?

@ChrisMaj

3 жыл бұрын

I'm just trying not to use it while recording.

@davidgretlein9384

3 жыл бұрын

@@ChrisMaj thx, I get it. Although, the slow-mo sequence was cool, got to say.😉

Thanks for this great video. I was turning a big diameter ring on VTL, material : stainless steel, 56" diameter, 0.5" thick wall, 3.5" height. After roughing I.D found .100 oval. After the roughing the O.D got .400 oval. Any suggestion from you?

@ChrisMaj

3 жыл бұрын

We don't do much stainless steel and that is a totally different animal.

Tricky as hell .

What precautions do you take when you're in your VTL? I always throw my VMC in E-stop anytime I'm inside

👍👍 machinest

Uwielbiam takie obrabiarki chociaż cnc nie potrafię obsługiwać

Je ne sais pas exactement quelle est l'utilité de cette pièce Mais j'aime depuis mon jeune âge voir toutes les opérations de façonnage, tournage, fraisage, usinage,polissage, des métaux, un métier très professionnel et de précision. Il suffit que l'axe de rotation ou la fraiseuse soient inclinés d'un petit degré pour que le travail ne se réalise pas comme prévu.

what is your feed and speed for wnmg and vnmg insert thanks

Soy de argentina que velocidades de corte estás usando por vuelta y rpm gracias titales

hi, is this Pi Band a one use thing? i have never seen that, great work, thx for showing ;-p

@ChrisMaj

3 жыл бұрын

Pi Tape is 0.01in (0.25mm) thick spring steel tape has graduations and numerals engraved and acid-etched on a ground surface. Vernier scale permits readings to .001in (.025mm) diameter; accuracy to ±.001in

@Madalf71

3 жыл бұрын

@@ChrisMaj that's the first time I've ever seen a Pi Tape, thanks!

интересно, после термички на сколько уменьшилось кольцо?

What's the inserts for rough processing?

How much stock did you leave for the low heat stress relief?

@ChrisMaj

3 жыл бұрын

3:23 0.200"

💯💯💯🤙🤙🤙👌👌👌

Curious work, you do.

Have you ever been asked to do any work for a national lab?

@ChrisMaj

2 жыл бұрын

No, most of the work we do is for steel mill industry .

12:30 Don't know what the material is in the bar it self but it had to be extremely temperature stable for that length.

@ChrisMaj

3 жыл бұрын

It's a Mitutoyo inside micrometer. We don't really do some extreme tolerances.

@jani73

3 жыл бұрын

If you keep those micrometers too long on hand, they will expand. It’s best to keep those in same room, where lathe is so that temperature is not too cold for example. But it is easy to calculate temperature correction in mm. With steel 0,000012*temperature difference in celsius degrees*diameter in mm=how much to correct your reading from micrometer. Something like that. We have even 2000mm outside micrometer and every size below that.

Станок большой есть, а инструмента для проверки нет?

wow

17:30 groovy

@ChrisMaj

3 жыл бұрын

These bastards will bite you if you're not careful.

What brand of inserts are you using?

@ChrisMaj

3 жыл бұрын

Mostly KENNAMETAL and KORLOY,

Magnets or tape on a pi tape if you need to check by yourself.

Machining a potato chip , well done

I've never used pi tape and hope i never have to lmao.

@geoffgreenhalgh3553

3 жыл бұрын

Easy enough to use on a lathe. on a lathe.

@bostedtap8399

3 жыл бұрын

Just use a standard tape measure and divide by 3.14

@andreweppink4498

3 жыл бұрын

@@LegendLength - 3.14159... Think that's right. Or close.

how bad did it spring coming out of jig

@ChrisMaj

2 жыл бұрын

It didn't really. Most of the material was removed before heat treatment/ stress relief, and the piece was bolted down for finishing.

What is the material ?

@ChrisMaj

3 жыл бұрын

0:11 4140 Normalized HT.

What is this part used for so big

@ChrisMaj

3 жыл бұрын

Most of the work we do is for Steel mill industry.

C'est quoi cette mesure au ruban ?

Are you hiring?

It is possible to buy an outside micrometer for measuring, that pi tape should be banned, when we were turning journals on crankshafts on 2 stroke engines-on site- we were using big micrometers or a faro arm for measuring, throw that pi tape thing out please, nice work by the way...

@ChrisMaj

3 жыл бұрын

Micrometers are nice but they are crazy expensive and on large diameters they are also tricky to use. Pi Tape is easier to use on taller pieces. Say what you want, but they are damn accurate if you know what you doin.

@petertrab8869

3 жыл бұрын

@@ChrisMaj If you know how to use those big micrometers they are the best, it tskes around 2 years for a good machinist to know proper use of big micrometers, in the maritime world when you are measuring journals on crankshaft’s e.t.c i think the oem superintendent would actually not allow that measuring device, i never seen it in use on-site, never heard the lloyd ins.guys mentioning this device but maybe it has it use somewhere but as i see it , it’s and old method and we have better ways of measuring today. So learn how to proper use a big outside micrometer, its all in the fingers and the position of micrometer, never hold a big micrometer in vertical pos. Just an example, there are alot of things to consider when u measurer with big micrometers...

@bostedtap8399

3 жыл бұрын

@@petertrab8869 Oh dear

@backho12

2 жыл бұрын

Pi tapes are used extensively in the aircraft industry and all sorts of large OD measurements. They have a vernier, are super easy to read, and quite accurate.

this get ground afteR?

@ChrisMaj

3 жыл бұрын

No, this is a finished part.

What will it deflect?

@ChrisMaj

3 жыл бұрын

That's the thing with my job. I get a drawing and a piece of metal and lots of times I don't even know what these parts do.

@andreweppink4498

3 жыл бұрын

@@ChrisMaj - That would drive me nutz. Got to know what's going on. Been lucky with jobs that way.

Is that programmed with Fanuc manual guide?

@ChrisMaj

2 жыл бұрын

Most of it.

@radams581

2 жыл бұрын

@@ChrisMaj nice! Just getting into it! Quite like it! Keep the videos up - cool channel!

@ChrisMaj

2 жыл бұрын

@@radams581 I don't know why, but a lot of people don't like that fanuc manual guide 🤔

Me already making in VTL sirmu machine make itally

Curious why didn't you start with a rolled and welded angle instead of the forging? Material grade?

@ChrisMaj

3 жыл бұрын

I don't get to choose materials. Material 4140 normalized.

15:13 Yoink.

Dörries Scharmann??

@ChrisMaj

3 жыл бұрын

Goodway Yama Seiki GV-1600M

@even1s

3 жыл бұрын

@@ChrisMaj Thanks

Ohh man. Face grooving in plate just sucks. Cant break that chip at All haha. I just did a video where i did some face grooves on some flamecut plate. And I never really got the grooving chips under control.

@ChrisMaj

3 жыл бұрын

And if you push feed to hard, it snap the tool right off.

バスケットリングに似てる。。。

What the F is a deflector ring?

@ChrisMaj

3 жыл бұрын

Even if I told you, you wouldn't F understand.

@Tugabud2

3 жыл бұрын

@@ChrisMaj I would say that you are arrogant and don't deserve any recognition for your videos.

@ChrisMaj

3 жыл бұрын

@@Tugabud2 I'm the one who's arrogant? You might want to check your comment. This isn't a learning channel, you want to watch it, you watch it. You don't fine with me.

Wnmg works a little better on this material tho

Has a 🐷 inside of the machine 🤣🤣

7:06 is boring and long not difficult

@ChrisMaj

3 жыл бұрын

I'm sorry I didn't get that. Are you talking about your life and where does it say that it's difficult.

@RealNotallGaming

3 жыл бұрын

@@ChrisMaj you dont have difficult tollerance :) +- o,2 is nothin of difficult

Omg quit with the zooming in and out and moving the camera so much. I about got motion sickness.