If you look in old machining books turning away from the chuck was fairly common ,the reason it works is because the tool flexes away from the job not into the job you also get a pulling effect on long parts, imagine a piece of string (also works if you just put the tool in the right hand side of the toolpost and turn towards the chuck, but without the pulling effect its not quite as good ) .its like old form tools that have a pivot point above center they can make long forms with f/all chatter . Thank for spending the time to show these things people need to see Old School Gets It Done ! most machinists now days don't learn how to do this stuff
As a life long machinist of over 30 year it's hard for machining videos to hold my attention. But your videos certainly hold my attention. I really enjoyed watching you make tools on the old Bridgeport in your own shop. Keep up the work.
I've got S..t loads of tools to make. The DSG LATHE in the background gets wired up next Wednesday. So with that and the Bridgeport........ I'm off. 😎👍
@@geoffgreenhalgh3553, I was forced into retirement six years ago at age 46 by 5 fused vertebrae. I never saw it coming. I loved doing machine work. It very satisfying to produce and repair parts.
Many thanks, I had wondered why you tended to work from the chuck put. It was certainly a brilliant example of the difference. I had come to the conclusion that it was probably because the job would tend to walk away from the centre in conventional machining. I have seen this happen with a fixed steady that is slightly off due to the job walking around the jaws from front contact to back
I followed up on another video's comments referring to your videos. So sad that you had to close down your operation. I'm really enjoying your videos though. That Nimonic Alloy is rather interesting... going back to WW2 and the British jet engine and even the Concorde... fascinating stuff! Thanks!
I worked 16 years with an engineering/manufacturing company. We built big, heavy hydraulic powered machinery for the offshore oil & gas industry. Had our own machine shop, we were a stand alone company. One lathe in our arsenal was a 1953 monarch, 36" swing and could handle 14ft lengths. I remember the day we removed the tracer unit since the tracer was never used. It was a fine lathe. We had 8 lathes total. From 5ft length capacity up to the monarch. I am not a full blown machinist but I did get to work with the machines in the shop on occasion. That 53 monarch was one beast of a machine. We also had 2 Lucas horizontal mills, they hardly ever found theirs elves with out a project on them. The only machine I refused to used was a really antique vertical lathe. I reworked the hydraulic lube and cooling on it though, lol. I really enjoyed working there, unfortunately lung cancer caught me and pretty much ended my career. I beat the cancer. Visit with them every now and then. A great place to work. One of those that you did not work for, rather, you worked with. 56 people on the rolls once, a really great team of people to work with. We were all friends.
I really enjoy your work, especially tripanning which is something I had not considered at my small size work. And it is certainly your level and scale of machining, cutting, boring, milling that amazes one. Thanks - more please.
Absolutely love it, the finest grade A machinist that I've ever seen who doesn't know how to link a you tube video, and neither do I, fascinating channel
He's the worlds most knowledgable machinist, bloody useless on vids, same as me,'cept I'm a mere novice on lathe if you had a filmmaker you get squillions of views me lad
Many many years ago I was taught this way, reason being load going towards centre as you say, and wear in headstock bearings (end thrust in bearing) , old timers knew what there were talking about proper artisans back in the day
@@userwl2850 am 62 no longer in the trade , there was never a day that past I did not learn something new, wish I was still in the game but no one wants a old fart , last place I worked the manager hated it that the knowledge I had and he had not, made sure I was redundant down the road
@@userwl2850 Yep, when turning towards the headstock you take pressure away from the tailstock support which stops it doing its job. Turning towards the tailstock keeps the cone engaged which stops chatter.
_David, your theory of continually loading-up the center seems like a good explanation._ 👍🏼 _I will put that into my black book, along with threading upside-down while traversing away from the chuck._ 📝📓
The main use is in gas turbine components and extremely high performance reciprocating internal combustion engines. The Nimonic family of alloys was first developed in the 1940s by research teams at the Wiggin Works in Hereford, England, in support of the development of the Whittle jet engine.[1][2]
I've experienced similar results on milling machine. Jobs were inconel 718 forgings on a sachman bed mill. Cut with swarf towards operator stopped chatter.
Did you mic it for variance or was it a loose enough spec to not matter? I have found The cutting forces going into the tailstock center does make a difference. Also you never risk the work pushing up into the chuck going that way versus the other.
I think that at last I figured it out. A Russian machinist (check out Victor Leontiev) who has an amazing series of instructional videos (top quality content but unfortunately in Russian with subtitles not always available), made a video about machine gib adjustments where he demonstrated the issues of wear. At one point while demonstrated how these adjustments might be necessary on the fly he showed the case of the keeper plates having proper clearance at the least worn part of the ways but then allowing the carriage to tilt up and off the prism when encountering resistance and exaggerated the example by showing a large drill making a lever.
Totally agree about loading the center, also the tip profile is different, with the 15 deg taking a smaller cut than the 45 deg, and the insert profile is positive on the 15 deg as opposed to the negative on the 45 deg tip.
Thanks for the tips David. I've got a job, 316L 8" Sch 80 pipe that I need to due a bore to clean up then to BarnesDrill vertical hone. I'm going to copy for boring set up if you don't mind. Even traded my almost new lath for a good older bigger/longer one to do the job. Hope it works out.
Excellent Vlog, very interesting on the possible cause on chatter on tough materials. Assuming that a revolving centre is always used and the point contact very small, either a centre hole or tube with cone, then yes, certainly plausible. A possible method to disprove/prove is to have some heavy duty axial compliance feature in the revolving center, IE a very strong spring!. but who has time for that?. Machine tools do wear, and do contribute to poor surface finish obviously. Like the plastic knife for mild steel, another comparison for the non-machinists, is to give them a cold chisel and hammer, and attempt to cut a chunk of material from mild, carbon , alloy steels, and the exotics. Not sure about Sir Issac Newton helping you, he only worked on apples. Try Brearley, Firth, Fowler, and Hadfield, very local proper engineers. Have a great weekend, and thanks for sharing. Regards from the Black Country. John.
I was wondering about this ever since you first posted it and I think I have figured it out. The force of the feed mechanism is behind and below the cutting edge when feeding toward the chuck and in front of the cutting edge when feeding toward the tailstock. One way drags the tool, the other pushes the tool. It would be interesting to spin the compound around to put the cutting edge behind the feed and feed toward the chuck. Of course this is not that useful because the cut has to stop well before the chuck. On a side note some slant bed lathes have the feed force applied close to the cutting edge axis.
I wold think a few things about turning towards the tailstock is the frequency how it loads on the live bearing is always changing and not giving it time to start to resonate? If the force is going towards the head stock the lathe body is acting like a trumpet when the resonating starts where as the opposite end/tailstock is pretty much a solid block. Your thoughts?
What is your opinion on KNUX1604xx inserts. 4 out of 5 machine shops swear by them, the 5th I haven't been inside...Here in South East Europe and in Russia and Asia they are very common but I rarely see them elsewhere. 93° approach angle and a lead style roughing chipbreaker (which means different left and right inserts) but they almost maxxed out my 5.5kW lathe with a 6mm per side and 0.35mm/rev on mild steel at 70m/min. I don't have any left hand holders and inserts and don't have enough room in the toolpost to put a 25mm shank backwards to try it "your way" but I know for a fact that it's a hit or miss to rough like that towards the chuck.
Another great demo. Is it down to the stretching rather than compressing the stock. Following the Renzetti maxim that everything is made of rubber, it sounds likely. ATB c
Another fine job demonstration, and of explanation as well! Question: Do you get any difference in taper along the length of the OD as compared to turning towards headstock ? Turning conventionally towards headstock, one can use tailstock setover to minimize any taper. Does this work the same way turning towards tailstock?
Dear David, thats an astonishing difference. Did you ever try to put a live center into the chuck and turn between 2 centers? Would the effectt still be the same? This makes me really curious! Is the centers "sideways rigidity" the factor that makes it so much better? Or is the reverse load on the spindle bearings? You dont happen to have a spare piece of Nimonic for testing do you? :)
Have you thought about trying an insert with a smaller nose radius? I have had that help in some situations. Just a thought, not trying to overstep. Take care!
I think part of the reason it works is this, it’s obvious that the chuck end would be the more solid and unmovable end vs the tailstock. Then think of the material being elastic and you pushed on it it from end to end towards the center like you were trying o squeeze it shorter (the same pressures you put on material when turning towards chuck) squeezing like that makes it less stable to side forces pushing against it. But if you were pull that same piece of elastic from end to end like if you were trying to stretch it’s length ( the same pressure you put on the material when turning away from chuck) than putting it in anstretched state. Then in this stretched state it is more stable to side forces pushing against it. That’s my analogy on it’s reason for preventing chatter. Although it appears the tailstock won’t move any. I think it would be way more likely to flex and give ever so slightly more so than the head stock side of the setup
Nice job, you are the first one I saw using that technique, but it seems to work really well, could you tell me the speed and feed you used?, I'm interested in what to use on such exotic materials and just how long did one cut take:D
The number of times feeding the "wrong" way has fixed a chatter issue for me is staggering. I figure, if it works then it works. The end product matters.
Same thing here. I recently had an issue with chatter (and, simultaneously, somehow, stringing out great tangles of nightmare yarn) on 1026 CDS and cutting toward the tailstock fixed it right up. It's not supposed to work. It's supposed to be less rigid and increase chatter, if any change is seen at all... but the real world can be odd that way.
A poor machinist will try and say it cant be done. a experienced one will find a way that works. Ive been around a lot of people that tell me to never turn towards the tailstock, but i guess that is as far as their experience goes.
I see you have a 4 way tool post. If you cut towards the chuck (conventional) but move the toolholder to the tailstock side of the toolpost, in theory you should have the same effect as reverse turning (away from the chuck). In towards the chuck turning, the tool is ahead of the axis of flexure. This means, the more tool pressure. the depth of cut increases. If you have the tool on the tailstock side of the toolpost, more tool pressure will make the tool deflect and depth of cut decreases. This condition tends to prevent chatter, rather than propagate it. ---Doozer
What are these for always been wondering more than once. Watching a channel down Australia they are called hollow bars not tube tickled me. Re adding links Think need to open video required share button look for copy link , close it, open where you want the link at the correct place hold finger on screen should get a paste hit it link should come. Its a copy and paste task. Steve
Holy smokes... I've done it...followed your instructions and don't know how..... I've done it in the comments. This makes me really happy... thanks buddy👍😎
@@MF175mp you definitely heard right. Speak to any Turner who's worked on one and ask what their favourite lathe is. I know lots of Turner and they all say Dean Smith and Grace lathe. 😎👍
@@userwl2850 what are the key features it has that make it the best? I have a Moriseiki, it has pretty good features for absolute precision and longevity but doesn't offer the best user experience which I'm sure the professional users appreciate highly
@@MF175mp it's difficult to explain really. It's like a Dean Smith and Grace lathe has a soul. You become friends with one. You get to know it's charm.. what it doesn't like... just how far you can push it's limits but still won't let you down. You even can get a best friend feeling with them. All sounds stupid I know but unless you experience working with one you'll never know. I actually felt an emotional loss when I sold my type 21... damn I miss it but I know it's being looked after. I plan on making a 200 mile trip to see how she looks now she's been refurbished. Hope this makes sense to you. 👌
I have had a chrome cylinder rod slip in the chuck, but it doesn't seem like your large chuck would have so light grip? I took 12mm out of the diameter of the chrome rod when it slipped.
Video link: Unconventional turning explanation how it's done
ua-cam.com/video/5L_P4Pa-MjI/v-deo.html
Thanks for that 🍺👍
@@userwl2850 Sure! ;-)
Take care, thanks for all the uploads!
stay safe!
If you look in old machining books turning away from the chuck was fairly common ,the reason it works is because the tool flexes away from the job not into the job you also get a pulling effect on long parts, imagine a piece of string (also works if you just put the tool in the right hand side of the toolpost and turn towards the chuck, but without the pulling effect its not quite as good ) .its like old form tools that have a pivot point above center they can make long forms with f/all chatter .
Thank for spending the time to show these things people need to see Old School Gets It Done ! most machinists now days don't learn how to do this stuff
"I've seen oaktrees with a better finish on'em" Made me laugh so loud i scared my cats!
That was funny.
haha yea im stealing that.
As a life long machinist of over 30 year it's hard for machining videos to hold my attention. But your videos certainly hold my attention. I really enjoyed watching you make tools on the old Bridgeport in your own shop. Keep up the work.
I've got S..t loads of tools to make. The DSG LATHE in the background gets wired up next Wednesday. So with that and the Bridgeport........ I'm off. 😎👍
Only 30 years? I put 49 in.
@@geoffgreenhalgh3553 Actually it's 35 but I'm disabled now. But certainly happy for you.
@@marklowe330 I retired 2 years ago.
@@geoffgreenhalgh3553, I was forced into retirement six years ago at age 46 by 5 fused vertebrae. I never saw it coming. I loved doing machine work. It very satisfying to produce and repair parts.
Many thanks, I had wondered why you tended to work from the chuck put. It was certainly a brilliant example of the difference. I had come to the conclusion that it was probably because the job would tend to walk away from the centre in conventional machining. I have seen this happen with a fixed steady that is slightly off due to the job walking around the jaws from front contact to back
I followed up on another video's comments referring to your videos. So sad that you had to close down your operation. I'm really enjoying your videos though. That Nimonic Alloy is rather interesting... going back to WW2 and the British jet engine and even the Concorde... fascinating stuff! Thanks!
I worked 16 years with an engineering/manufacturing company. We built big, heavy hydraulic powered machinery for the offshore oil & gas industry. Had our own machine shop, we were a stand alone company. One lathe in our arsenal was a 1953 monarch, 36" swing and could handle 14ft lengths. I remember the day we removed the tracer unit since the tracer was never used. It was a fine lathe. We had 8 lathes total. From 5ft length capacity up to the monarch. I am not a full blown machinist but I did get to work with the machines in the shop on occasion. That 53 monarch was one beast of a machine. We also had 2 Lucas horizontal mills, they hardly ever found theirs elves with out a project on them. The only machine I refused to used was a really antique vertical lathe. I reworked the hydraulic lube and cooling on it though, lol. I really enjoyed working there, unfortunately lung cancer caught me and pretty much ended my career. I beat the cancer. Visit with them every now and then. A great place to work. One of those that you did not work for, rather, you worked with. 56 people on the rolls once, a really great team of people to work with. We were all friends.
I really enjoy your work, especially tripanning which is something I had not considered at my small size work. And it is certainly your level and scale of machining, cutting, boring, milling that amazes one. Thanks - more please.
Absolutely love it, the finest grade A machinist that I've ever seen who doesn't know how to link a you tube video, and neither do I, fascinating channel
More like B- but thanks so much.
He's the worlds most knowledgable machinist, bloody useless on vids, same as me,'cept I'm a mere novice on lathe if you had a filmmaker you get squillions of views me lad
Many many years ago I was taught this way, reason being load going towards centre as you say, and wear in headstock bearings (end thrust in bearing) , old timers knew what there were talking about proper artisans back in the day
Hi Paul. I never stop learning in this job. That's why it's so interesting. 👍
@@userwl2850 am 62 no longer in the trade , there was never a day that past I did not learn something new, wish I was still in the game but no one wants a old fart , last place I worked the manager hated it that the knowledge I had and he had not, made sure I was redundant down the road
@@paulperrin2152 old fart ... 62... behave Paul.... good to go for another 30 years buddy. Get plenty of John Smith's beer down ya 🍺😎
@@userwl2850 Yep, when turning towards the headstock you take pressure away from the tailstock support which stops it doing its job. Turning towards the tailstock keeps the cone engaged which stops chatter.
_David, your theory of continually loading-up the center seems like a good explanation._ 👍🏼
_I will put that into my black book, along with threading upside-down while traversing away from the chuck._ 📝📓
I had a black book too for years noting all feeds and speeds. 👍
very profesional work..thanks for your time david
Always a pleasure to watch you work mate, never something I don't learn. 👍
Good news. If people learn something that's why I make the videos. 👌
The main use is in gas turbine components and extremely high performance reciprocating internal combustion engines. The Nimonic family of alloys was first developed in the 1940s by research teams at the Wiggin Works in Hereford, England, in support of the development of the Whittle jet engine.[1][2]
I've experienced similar results on milling machine. Jobs were inconel 718 forgings on a sachman bed mill. Cut with swarf towards operator stopped chatter.
I would love to see a video on when and where you did your time and learned your trade. I loving hearing about how other machinists came up.
I started at Keetons and sons in Sheffield.
Great job David.. you have a great business! congratulations!
Did you mic it for variance or was it a loose enough spec to not matter? I have found The cutting forces going into the tailstock center does make a difference. Also you never risk the work pushing up into the chuck going that way versus the other.
Great video. I'm glad you said about loading the tailstock. I was thinking the same. Who knows, it works. Thanks for sharing
Cheers Rupert 🍺👍
I think that at last I figured it out. A Russian machinist (check out Victor Leontiev) who has an amazing series of instructional videos (top quality content but unfortunately in Russian with subtitles not always available), made a video about machine gib adjustments where he demonstrated the issues of wear. At one point while demonstrated how these adjustments might be necessary on the fly he showed the case of the keeper plates having proper clearance at the least worn part of the ways but then allowing the carriage to tilt up and off the prism when encountering resistance and exaggerated the example by showing a large drill making a lever.
Totally agree about loading the center, also the tip profile is different, with the 15 deg taking a smaller cut than the 45 deg, and the insert profile is positive on the 15 deg as opposed to the negative on the 45 deg tip.
Thanks for the tips David. I've got a job, 316L 8" Sch 80 pipe that I need to due a bore to clean up then to BarnesDrill vertical hone. I'm going to copy for boring set up if you don't mind. Even traded my almost new lath for a good older bigger/longer one to do the job.
Hope it works out.
🤞 I hope it works out for you good luck fella 👍
Your like our Jim from work. We don't argue with Jim, his way is always better :)
I like Jim... he sounds like my kind of guy. Show him this video I'd be interested to hear what he thinks 👍
Excellent Vlog, very interesting on the possible cause on chatter on tough materials. Assuming that a revolving centre is always used and the point contact very small, either a centre hole or tube with cone, then yes, certainly plausible. A possible method to disprove/prove is to have some heavy duty axial compliance feature in the revolving center, IE a very strong spring!. but who has time for that?. Machine tools do wear, and do contribute to poor surface finish obviously.
Like the plastic knife for mild steel, another comparison for the non-machinists, is to give them a cold chisel and hammer, and attempt to cut a chunk of material from mild, carbon , alloy steels, and the exotics. Not sure about Sir Issac Newton helping you, he only worked on apples. Try Brearley, Firth, Fowler, and Hadfield, very local proper engineers.
Have a great weekend, and thanks for sharing.
Regards from the Black Country.
John.
Cheers John ... Newton or Einstein... one of them would work it out.... laws of motion and force. 🤔👍
@David Wilks superb
Thanks Chris 🍺👍
I was wondering about this ever since you first posted it and I think I have figured it out. The force of the feed mechanism is behind and below the cutting edge when feeding toward the chuck and in front of the cutting edge when feeding toward the tailstock. One way drags the tool, the other pushes the tool. It would be interesting to spin the compound around to put the cutting edge behind the feed and feed toward the chuck. Of course this is not that useful because the cut has to stop well before the chuck. On a side note some slant bed lathes have the feed force applied close to the cutting edge axis.
Watch the pinned video at the top..... at 7.40... I did exactly what your suggesting 👏🏻👏🏻👏🏻👍
@@userwl2850 Thanks it appears to work.
David . Would a follow rest help a chatter problem and a positive insert help with less tool pressure.
Yes follow rests work if the machine has one 👏🏻👍
We always roughed out with the 15 deg approach.
Anything goes for a rough cut... even turning towards the Chuck 😉👍
Every 15deg of approach, radial push off is increased by 75% hence chatter
I wold think a few things about turning towards the tailstock is the frequency how it loads on the live bearing is always changing and not giving it time to start to resonate? If the force is going towards the head stock the lathe body is acting like a trumpet when the resonating starts where as the opposite end/tailstock is pretty much a solid block. Your thoughts?
Great share David , ENJOYED !!
How you doing Shawn 👌👍
@@userwl2850 Not so good, Been in lot of pain . Thanks for asking ! Just going one day at a time ..
What is your opinion on KNUX1604xx inserts. 4 out of 5 machine shops swear by them, the 5th I haven't been inside...Here in South East Europe and in Russia and Asia they are very common but I rarely see them elsewhere. 93° approach angle and a lead style roughing chipbreaker (which means different left and right inserts) but they almost maxxed out my 5.5kW lathe with a 6mm per side and 0.35mm/rev on mild steel at 70m/min. I don't have any left hand holders and inserts and don't have enough room in the toolpost to put a 25mm shank backwards to try it "your way" but I know for a fact that it's a hit or miss to rough like that towards the chuck.
Another great video. Thank you.
Cheers Peter 👍🍺
15 deg approach tool is always the way I go cheers Dave where you gone hope your ok m8
Genius at work
Just a simple beer loving bloke 😉🍺
Another great demo.
Is it down to the stretching rather than compressing the stock. Following the Renzetti maxim that everything is made of rubber, it sounds likely.
ATB
c
That sounds like a good explanation 👏🏻👍
Another fine job demonstration, and of explanation as well!
Question: Do you get any difference in taper along the length of the OD as compared to turning towards headstock ?
Turning conventionally towards headstock, one can use tailstock setover to minimize any taper. Does this work the same way turning towards tailstock?
If a job tapers it the same both ways. Either bed wear or tailstock out of line. 👌👍
Dear David, thats an astonishing difference. Did you ever try to put a live center into the chuck and turn between 2 centers? Would the effectt still be the same? This makes me really curious! Is the centers "sideways rigidity" the factor that makes it so much better? Or is the reverse load on the spindle bearings? You dont happen to have a spare piece of Nimonic for testing do you? :)
Nice one Dave . Cheers .
David are you on a 1.2 rad sandvik? New edge ?
just bizzar to me that it makes that drastic a difference turning towards the tailstock
It's been baffling me for 30 years. All I know is it works.🤔👍
I was going to ask if you had any plausible explanation as to why it works, but I guess that’s a NO! 🙂
"That's *just* a 2mm cut"
That's something I will never say with the tools I have lol
What Ra does an oak tree have .? More or less that of a plowed field ! 😂 Great vídeo , useful info and a practical demonstration. Cheers !
🍺 cheers David 👍
What is this part for? What type of industry?
Love to know what all these turned parts end up as ie finished product
I'm sure these are to be used in nuclear power station. 🤔
What would the end product be for such a high grade of steel?
Can you machine this stuff with ceramics or cbn to any advantage ?
Yes if you only have a tiny amounts to turn off.
If it was only about how the center is being loaded, it should work better if cranked the quill tighter as well?
You'd think so wouldn't you 🤔 no is the answer... I've done that and everything else. Quite frustrating.
@@userwl2850 it is a mystery then, and definitely not solvable by just seeing a video about it.
Nice to see the model 17 DSG in the background. Is it wired up now?
It's getting done Wednesday next week..... I'll be able to use it again.. can't wait. Will make a video for sure. 👍
Have you thought about trying an insert with a smaller nose radius? I have had that help in some situations. Just a thought, not trying to overstep. Take care!
That does help on common steels but it would break on this stuff. Not strong enough. Good thinking.. I like it 👏🏻👍
@@userwl2850 Ok, thanks out was only a thought! Be well my friend.
Does it mic out at the center as the ends? I get the tube push away.
This does measure the same yes. It's Nimonic and won't push off.
I think part of the reason it works is this, it’s obvious that the chuck end would be the more solid and unmovable end vs the tailstock. Then think of the material being elastic and you pushed on it it from end to end towards the center like you were trying o squeeze it shorter (the same pressures you put on material when turning towards chuck) squeezing like that makes it less stable to side forces pushing against it. But if you were pull that same piece of elastic from end to end like if you were trying to stretch it’s length ( the same pressure you put on the material when turning away from chuck) than putting it in anstretched state. Then in this stretched state it is more stable to side forces pushing against it. That’s my analogy on it’s reason for preventing chatter. Although it appears the tailstock won’t move any. I think it would be way more likely to flex and give ever so slightly more so than the head stock side of the setup
How close did you come to filling those 55 gallon drums?
Full... plus another 1 extra 👍
Nice job, you are the first one I saw using that technique, but it seems to work really well, could you tell me the speed and feed you used?, I'm interested in what to use on such exotic materials and just how long did one cut take:D
Maybe 30 rpm with .008" feed. Depends on the diameter of the job. This was 8" 👍
@@userwl2850 thanks👍 that's actually even slower than I thought
The number of times feeding the "wrong" way has fixed a chatter issue for me is staggering. I figure, if it works then it works. The end product matters.
I do it on nearly every job I do... even mild steels. 👍
Same thing here. I recently had an issue with chatter (and, simultaneously, somehow, stringing out great tangles of nightmare yarn) on 1026 CDS and cutting toward the tailstock fixed it right up.
It's not supposed to work. It's supposed to be less rigid and increase chatter, if any change is seen at all... but the real world can be odd that way.
Nice work, it's always cool to watch tough alloys being machined.
what would you rate that TOS lathe out of 10?
Between 5 and 6 ... no more.
@@userwl2850 sounds reasonable.
A poor machinist will try and say it cant be done. a experienced one will find a way that works.
Ive been around a lot of people that tell me to never turn towards the tailstock, but i guess that is as far as their experience goes.
None of the other guys here do it.. they will struggle all day but their way is the best to them. 🤔
I see you have a 4 way tool post. If you cut towards the chuck (conventional) but move the toolholder to the tailstock side of the toolpost, in theory you should have the same effect as reverse turning (away from the chuck). In towards the chuck turning, the tool is ahead of the axis of flexure. This means, the more tool pressure. the depth of cut increases. If you have the tool on the tailstock side of the toolpost, more tool pressure will make the tool deflect and depth of cut decreases. This condition tends to prevent chatter, rather than propagate it. ---Doozer
Fun to watch👍👍👍👍👍👍👍👏🏻👏🏻🍻
What are these for always been wondering more than once. Watching a channel down Australia they are called hollow bars not tube tickled me.
Re adding links Think need to open video required share button look for copy link , close it, open where you want the link at the correct place hold finger on screen should get a paste hit it link should come. Its a copy and paste task.
Steve
Holy smokes... I've done it...followed your instructions and don't know how..... I've done it in the comments. This makes me really happy... thanks buddy👍😎
David, How does the TOS lathe compare to the DSG?
I've heard that the DSG is the Rolls-Royce of lathes. Doubt it's true but still.
@@MF175mp you definitely heard right. Speak to any Turner who's worked on one and ask what their favourite lathe is. I know lots of Turner and they all say Dean Smith and Grace lathe. 😎👍
It's bigger and that's it. No comparison between TOS and DSG.
@@userwl2850 what are the key features it has that make it the best? I have a Moriseiki, it has pretty good features for absolute precision and longevity but doesn't offer the best user experience which I'm sure the professional users appreciate highly
@@MF175mp it's difficult to explain really. It's like a Dean Smith and Grace lathe has a soul. You become friends with one. You get to know it's charm.. what it doesn't like... just how far you can push it's limits but still won't let you down. You even can get a best friend feeling with them. All sounds stupid I know but unless you experience working with one you'll never know. I actually felt an emotional loss when I sold my type 21... damn I miss it but I know it's being looked after. I plan on making a 200 mile trip to see how she looks now she's been refurbished. Hope this makes sense to you. 👌
Hell Dave, I hope they pay you enough, they would be fooked without you. Now were do I get that plastic knife and fork from?
Glen they managed without me for 30 years but thanks buddy 👍
Nicely Done mate!1Cheers!
TOS
Czechoslovakia
Used a small one at a place I worked at once...
It were....allrite
Good tip, thanks for that.
wonderful accent Northern MaN
Awesome
Bizzare. Why the difference in finish?
If only there was an easy way to remember how to machine nimonic steel... 😯😂
Don’t need Newton, we have you🧐🍺🍺👍🏴
Newton wrote his principia in his early 20s the greatest mind in history. I'm just a beer and birds bloke from Sheffield 😂🍺👍
@@userwl2850 your far more than that, and a master craftsman.
It's probably chattering because your pulling not pushing. Kinda like a drag racing rear end
Good stuff
Chatter, don’t you just love it? Not!
It's so annoying 😠
Why not use a quality machine, you have a DSG.
It's getting wired up finally next Wednesday.
I ollas use Ceramic Tips, mind you I don't pay for them.
I’ve seen oak trees with a better finish on em. Lol.
😎😂
Nasty chips
ua-cam.com/video/k_5FLNF9JYI/v-deo.html
I have had a chrome cylinder rod slip in the chuck, but it doesn't seem like your large chuck would have so light grip? I took 12mm out of the diameter of the chrome rod when it slipped.
@@MF175mp I've had that happen numerous times. Just another benefit of turning towards the tailstock. 👍
hey David are you still with us ?