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
@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.
@@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
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?
@@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
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
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
@@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!
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.
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.
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
@@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.
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.
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
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?
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.
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
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?
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.
@@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.
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...
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.
@@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...
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.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
This precision is very fascinating.
From a rough start to perfection. I am very impressed.
Glad you like it!
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
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
@Devon Marshall instablaster =)
@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.
@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
@Devon Marshall Happy to help :)
first time that I seen anybody using a Pi-tape to measure thanks for the video
Well, thanks for watching 👍
@@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
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.
I do this day in and day out on manual Webster & Bennetts 36"-60" chucks, great fun!
Beautiful, it reminds me of a elaborate steam engine tire
Nice work.
I wasn't surprised it went out for stress reliving after roughing.
Tricky job.
CNC and a great machinist like you is a awesome .
First class job mate 👍
Hey, thanks for watching glad you enjoyed.
Awesome Part Chris.
Thanks for sharing! :)
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
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
@@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
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
That large Pi tape probably cost close to 300 Euro...
Excelente trabajo, Felicidades!!!
Damn, those chips from that last grooving op look lethal.
One chip to rule them all
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
Fanuc nie taki zły
Wow... really impressive!
Reporter: how many experiance/skill Do you Have in tourning
Chris maj: yes
Nice finish on there.
Very nice work!
Thanks for taking the time to watch the video.
@@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!
@@briangarland9883 Yeah, that's what we do, steel mills and heavy industry.
I learned a new word today..circularity . Thanks!
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.
It's a Mitutoyo inside micrometer. We don't really do some extreme tolerances.
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.
Is this the airlock for the rocket you are making
I wish 😅
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.
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
Yeah, I know that trick too 👍
Hello
@@LegendLength yeah. Most machiners know how to do math. They just don’t know the math.
@@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.
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!
what is your feed and speed for wnmg and vnmg insert thanks
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.
Haha, thanks man. I don't want to bore you to death.
Mécanique de précision et de haute technicité
Карусель, карусель, Кто успель - тот присель,
Пракатись на нашей карусеееель....
What precautions do you take when you're in your VTL? I always throw my VMC in E-stop anytime I'm inside
Have you ever been asked to do any work for a national lab?
No, most of the work we do is for steel mill industry .
Ring squealing like crazy. Gotta go easy on it. Clamps - good idea.
What's the inserts for rough processing?
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
I think it was about 0.050" after roughing, but that's mostly because the jaws were pretty tight.
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?
We don't do much stainless steel and that is a totally different animal.
How much stock did you leave for the low heat stress relief?
3:23 0.200"
As soon as I read "Anhängebohrung" on the blueprint, the numbers looked German as well :)
Grüsse aus CH!
Das Unternehmen, für das wir viel arbeiten, hat seinen Sitz in Deutschland.
I love these videos but I have no experience, do you actually perform these cuts without coolant? Ty
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 this part used for so big
Most of the work we do is for Steel mill industry.
Uwielbiam takie obrabiarki chociaż cnc nie potrafię obsługiwać
Soy de argentina que velocidades de corte estás usando por vuelta y rpm gracias titales
C'est quoi cette mesure au ruban ?
how bad did it spring coming out of jig
It didn't really. Most of the material was removed before heat treatment/ stress relief, and the piece was bolted down for finishing.
Станок большой есть, а инструмента для проверки нет?
What will it deflect?
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.
@@ChrisMaj - That would drive me nutz. Got to know what's going on. Been lucky with jobs that way.
What is the material ?
0:11 4140 Normalized HT.
Köszi!👍👍👍
Is that programmed with Fanuc manual guide?
Most of it.
@@ChrisMaj nice! Just getting into it! Quite like it! Keep the videos up - cool channel!
@@radams581 I don't know why, but a lot of people don't like that fanuc manual guide 🤔
hi,
is this Pi Band a one use thing? i have never seen that,
great work, thx for showing ;-p
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
@@ChrisMaj that's the first time I've ever seen a Pi Tape, thanks!
Curious why didn't you start with a rolled and welded angle instead of the forging? Material grade?
I don't get to choose materials. Material 4140 normalized.
Tricky as hell .
интересно, после термички на сколько уменьшилось кольцо?
What brand of inserts are you using?
Mostly KENNAMETAL and KORLOY,
Da ate gosto de ver.
Pracowałem w Hucie Aluminium Konin na karuzeli 15 lat temu
Good 👍👍
Dörries Scharmann??
Goodway Yama Seiki GV-1600M
@@ChrisMaj Thanks
Magnets or tape on a pi tape if you need to check by yourself.
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?
I'm just trying not to use it while recording.
@@ChrisMaj thx, I get it. Although, the slow-mo sequence was cool, got to say.😉
this get ground afteR?
No, this is a finished part.
👍👍 machinest
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.
And if you push feed to hard, it snap the tool right off.
Are you hiring?
💯💯💯🤙🤙🤙👌👌👌
17:30 groovy
These bastards will bite you if you're not careful.
Nice :)
What the F is a deflector ring?
Even if I told you, you wouldn't F understand.
@@ChrisMaj I would say that you are arrogant and don't deserve any recognition for your videos.
@@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.
I've never used pi tape and hope i never have to lmao.
Easy enough to use on a lathe. on a lathe.
Just use a standard tape measure and divide by 3.14
@@LegendLength - 3.14159... Think that's right. Or close.
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...
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.
@@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...
@@petertrab8869 Oh dear
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.
Me already making in VTL sirmu machine make itally
Machining a potato chip , well done
wow
15:13 Yoink.
7:06
is boring and long
not difficult
I'm sorry I didn't get that. Are you talking about your life and where does it say that it's difficult.
@@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.
Wnmg works a little better on this material tho
バスケットリングに似てる。。。
Has a 🐷 inside of the machine 🤣🤣
Sure wish you could fast forward in this video. What a waste of time.
Curious work, you do.