Cracked head casting? - Schaublin 125-CNC Lathe

[@hann43]

At 7:00 is that a hex-key at the end of the shaft?

[@RotarySMP]

WooHooo!!! You are right. I never thought to check the opposite end of the spindle, but just did, and it is a 6mm hex drive. Thanks!

[@andypughtube]

@@RotarySMP I had to watch to the end, just in case you were teasing us and planned to find it in the video. I thought that the clear shot was cinematic foreshadowing.

[@viorelparaschivoiu8882]

Beat me by six minutes, SMP. I too thought you would eventually find it.

[@RotarySMP]

@@andypughtube Nope, I really did not notice it. I edit my video on a 13" laptop. The preview is pretty tiny, and I guess I was concentrating on the bearing.

[@hann43]

@@RotarySMP Nice! :D

[@TomChame]

Excellent choice using the galvanized pipe, it adds a bit of class to the channel. Well done, thanks.

[@RotarySMP]

Thanks, needed that touch of class ;)

[@wildin13]

Thats some posh pipe! Beats my off cut of wardrobe hanging rail 😅🤣

[@RotarySMP]

@@wildin13 Maybe I should start selling them on Amazon :)

[@MacMiskenn]

I like how toothbrushes are great for getting into corners for cleaning. But it's a little annoying how much my teeth crunch afterwards.

[@RotarySMP]

Like :)

[@sourabhkumawat4863]

The way you do everything in the videos...... You are going to have a million subscribers by the end of the next year...... Cheers🥂

[@RotarySMP]

That would be nice. Thanks for the encouragement

[@nick1bb1]

Americas cup dialogue - comedy gold!. looking forward to the next installment

[@RotarySMP]

Thanks for the feedback. I hope Glenn Ashby is in the next cup :)

[@joeldriver381]

I love seeing these disassembly videos. It is so cool to see how this stuff was designed and manufactured.

[@RotarySMP]

Schaublin must have put a lot of engineering hours into the design of the casting on this machine. It really is cool.

[@EngineeringSpareTime]

4:50 my mind can’t do other then thinking:“ Tappy Tap Tap...“ Great video! I like your tea-chat while working on the machine :)

[@RotarySMP]

Yep, me too Quinn has ruined us all :)

[@wildin13]

A must when squaring up the work piece. Also not to forget the "click" when tightening nuts and bolts curtesy of AvE

[@RotarySMP]

@@wildin13 I am pretty sure I am the first person to ever loosen most of these fasteners.

[@alexscarbro796]

A fantastic voyage of discovery!

[@RotarySMP]

Thanks for joining me on it.

[@TheMetalButcher]

Dude that thing is in great shape! You're going to have an awesome CNC when you're done.

[@RotarySMP]

It really is in astonishingly good condition considering it is 40 years old. Thanks for the feedback.

[@burningdieselproduction5498]

Great video. I guess there is a start of a CNC Schaublin lathe retrofit and the finish of the CNC Schaublin retrofit. There is a whole big part in the middle... And this part is where you shine! Now I won't be able to sleep for nights before you tell us what's going on with the Z axis ball nut... :)

[@RotarySMP]

Glad youare watching Glenn Ashby :) Yepp, I have a bit of work to do on that Z screw,

[@CalvinoBear]

A Bonnie, a beauty, and a joy forever. She’s really cleaning up nice. Great work and good luck!

[@RotarySMP]

Glad I took a ount on this one.

[@theromihs]

LOL that name plate must be special, you spend ages cleaning it. Great videos!

[@RotarySMP]

Thanks. That gunge in between the letters is really tenacious.

[@TradeWorks_Construction]

😂 That clip you through in there for the American Cup was absolutely brilliant. Personally had no idea that it was for the sport of sailing, however its general applicability for almost everything had me falling out my chair with laughter. Yeah there is a beginning and the end and Oh yeah that part in the middle … 🤯 wait there’s more? The future is something the future worries about? Dude you are legendary 🫡

[@RotarySMP]

Hi Chris, I remember that had my ROTFLMAO as well. The warrior poet of our times :)

[@vincentguttmann2231]

Once again, a great video. I think you nailed the music this time. I'm fine with your cheater tubing as long as you don't use plastic pipes of any kind, but that lathe deserves a precision ground, heat treated water pipe out of titanium ;) And I always appreciate the little chit-chat about whatever you like, keep it coming!

[@RotarySMP]

Thanks for the feedback. I am always unsure with the music, as it is so subjective.

[@vincentguttmann2231]

@@RotarySMP Yeah, that's for sure. As ToT was the one who pulled me into KZbin machining, I apparently have acquired his taste of music, so take that how you want.

[@RotarySMP]

@@vincentguttmann2231 I am sure Tony will be thrilled to hear that.

[@amundsen575]

Un believable how well made that machine is. Great new life ahead!

[@RotarySMP]

I guess the fact that it is still being made (as the 125-CCN) after 40 years is a tribute to the effort Schaublin put into it.

[@rasmusb2523]

It's a great story about the Nimonic 90, it probably has happened something like that throughout history. When it comes to Nimonic 90 and the engines built by Rolls Royce they actually sold a whole bunch of jet engines to the russians as early as 1946.

[@RotarySMP]

I saw that in the Mig 15 wiki. Thanks.

[@miles11we]

"I think the future is something the future has to worry about" honestly that's how I do most of my projects, set something aside and hope I'm a smarter man by the time I get back around to it. Works out from time to time.

[@RotarySMP]

I also find procrastination, when pursued with sufficient zeal solves way more problems that people give it credit for.

[@Ryan-dz3jo]

I was a little nervous about the title! Great video and I am looking forward to Moto GP chat.

[@RotarySMP]

I was also a bit nervous when that was pointed out. Luckily the concensus seems to go towad tooling mark.

[@TheKnacklersWorkshop]

Hi, Sorry I am late viewing... you've made good progress in this video... I was impressed with the upgrade to a galvanized pipe, clearly you listen to your viewers and I don't think we will talk about the America's Cup result - lol. See you next time. Paul,,

[@RotarySMP]

Thanks. For the community, I'll go to great lengths. For Rust to Galvanised.

[@paulbadger6336]

Well done! I like your style.

[@RotarySMP]

Thanks a lot.

[@zxspectum]

When you reassemble I'll be keen to see how you set the gibbs. Especially the mid point set Screw. Hopefully you won't gloss over that bit.

[@RotarySMP]

I'll probably reassemble the same way. Put the screw in first, then the gib on it, and then bolt the assembly to the saddle, and adjust.

[@zxspectum]

@@RotarySMP yes it's how do you adjust. What is a loose fit compared to tight? Is it just a matter of tightening till no play is detected?

[@RotarySMP]

@@zxspectum I will probably adjust the gibs without the ballscrews installed, so I can move the slides around and feel the resistance, and then mark the resulitng positions. The difference between correct and binding is not much normally. Then just reassemble to those positions. I'm open for better suggestions.

[@Rustinox]

Indeed, the galvanised pipe made whole the difference.

[@RotarySMP]

It finished off last weeks mild steel allen key. :)

[@tk4244]

I think as an aircraft guy you should use titanium pipes at least. 🛩

[@RotarySMP]

@@tk4244 Good call :)

[@geekoid183]

Hello, At 2:38 I can see that those motor drivers seems to take standard step / dir command. I just don't know what the "precis" pin does... Nevertheless, it's nice to see this old machine use the same "protocol" as many hobbyist machines !

[@RotarySMP]

I was surprised by that. I am guessing that the Precis pin is used in homing so that the resolver angle is used for more precise homing. That is mentioned in the manual. Shame those old drivers are so huge, and not documented.

[@geekoid183]

@@RotarySMP Oh that's right, some kind of index signal. The lake of documentation is kinda sad. If only the original control was working and the axis weren't seized up, with the help of an oscilloscope or a logic analyser you could have determine the step and dir timing to reuse those drives. But you're right, taking into consideration the size or even the reliability, you better replace the whole motion electronic.

[@RotarySMP]

@@geekoid183 It is a shame, but on the other hand, this makes it easier on my conscience for ripping the control cabinet apart.

[@geekoid183]

@@RotarySMP 😂

[@policedog4030]

If the cross slide were to be set up in a Blanchard grinder with it's magnetic hold down fixture turned on dollars to doughnuts it would then be well within spec?, (or at least far closer than it appears to be from the (unloaded) surface plate quick check).

[@RotarySMP]

I need to check it on a bigger surface plate.

[@davidsamways]

Contraves (against birds) was a trade name of Oerlikon machine tool, electrical engineering and armaments manufacturing empire - Oerlikon Contraves were famous for their 20mm anti-aircraft gun. The names of Oerlikon and Contraves has been through many hands since the 70s. The cross-hatching is from slideway grinding with a cup-wheel. Technically it's not "Blanchard" grinding since this is a trade name applied to all kinds of vertical spindle grinding (often using a very large segmented wheel) where the work is rotated on a table. Before the 50s and early 60s Schaublin used to hand-scrape all the surfaces. From the early 60s until the 70s Schaublin left surfaces in the ground state from the slideway grinding and just scraped one mating surface - gib strips were almost always scraped to fit. The exception to this was with hardened beds on their screw-cutting machines which where ground using the periphery or circumference of the wheel as in conventional surface grinding. Mating surfaces were cup-wheel ground and left in that state or scraped to fit.

[@RotarySMP]

Thanks a lot. It is cool when people share knowledge like this. I really appreciate you insights.

[@RotarySMP]

@@drmr_music Interesting. I'll take another looke at what is on the drivers.

[@rosssshed2336]

Enjoying the series. How do you manage not losing small parts and fasteners during a teardown?

[@RotarySMP]

There is such an unepected level of interest in my parts control system, I have added this into the next video.

[@andypughtube]

Definitely a scratch in my opinion as someone who used to look at cracks for a job.

[@RotarySMP]

Glad to hear that. Thanks Andy.

[@klausnielsen1537]

Same thought. Similar background.

[@michaelsilva7085]

Proctologist’s?

[@thetinguy]

@@michaelsilva7085 ass man

[@EastLondonKiwi]

Another great episode chap. Re the suspect crack, Curtis over at Cutting Edge Engineering Australia did a couple of episodes where he talked through the process of using penetration dyes to determine where crack are and how bad they are. A dye up may give you more info about your damage can confirm if its a real problem you should do something about, or if its simply surface damage you can leave?

[@RotarySMP]

True. I dont have a die penetrant kit though. I could get one, but really this is only a secondary, none structural feature.

[@kristofpucejdl]

I could watch you working and listen to your random stories for hours :D Super nice style. Btw I am curious where do you put all the parts when you disassemble them :) It seems like you just put them aside but I reckon there has to be some logic if you ever want to put them back together.

[@RotarySMP]

Oh no! Everyone is jumping on my parts control "system" this week. You busted me. I have no system! :-O

[@NicoCarsAndCookies]

The system you are looking at, based on maaaany videos of rotarySMP, is pure guess, luck and magic

[@kristofpucejdl]

@@RotarySMP Cmon, that cant be :D I also have no system and I never put things back together!

[@RotarySMP]

@@kristofpucejdl I have one advantage. I have it all on video :)

[@davidfarmer]

I just bought a nice set of wera hex plus allen keys for doing this exact type of work. they work great for removing stubborn hex screws.

[@RotarySMP]

I have a nice ball end set up to 5mm, and some decent Japanese ones which go bigger. I have an ice-cream container (what else) in a draw where the allen keys live, so any I get go in there, incluing Ikea. I probably should be more eslective.

[@davidfarmer]

@@RotarySMP The ikea ones are the softest.

[@RotarySMP]

@@davidfarmer This one has 6mm badly stamped on it. The stamping was probably to high value for Ikea :)

[@SalmoTrutti]

@@RotarySMP I think all the IKEA ones are 4mm, so you're probably right

[@davidfarmer]

Most of the ikea wrenches are soft round stock that has been cold formed into a hex on the end haha.

[@vincei4252]

So many bolts and bits! Are you like me and just keep an inventory in my head of what goes where or do you have a more elaborate inventory system for when it goes back together?

[@RotarySMP]

I have been bagging them in Zip lock baggies and taping the bags to the parts. Plus I have videos :)

[@vincei4252]

@@RotarySMP Ah, that makes sense :-) I should film more!

[@danielabbey7726]

Not sure if it's been discussed previously, but seems odd that Schaublin used a rectangular bed, rather than v-ways (with money no object). Any idea why?

[@RotarySMP]

Box ways are commonly used on larger machines. They are the most rigid, but lack the partial self adjustment of vee ways, and require an extra gib.

[@danielabbey7726]

@@RotarySMP Thanks!

[@JerryBiehler]

Looks like the motor drive has step and direction inputs so you could just run that from any number of CNC controllers out there. I like the kFlop myself. There are some modern drives out there that do have resolver options for feedback.

[@RotarySMP]

This are different resolvers (3 phase Synchros), than most modern drives accept. The old drives are huge, 40 years old and undocumented, and require a massive DC transformer. I'll replace them with something modern.

[@JerryBiehler]

@@RotarySMP ok. I recommend yaskawa or Mitsubishi servos. They have some of the best real time auto tuning which makes things nice.

[@RotarySMP]

@@JerryBiehler I am not sure if the budget will spring for them. I was looking at Lichuan A4's, and have received good feedback on them.

[@JerryBiehler]

@@RotarySMP You can get used sets on eBay for pretty cheap, they get removed from decommissioned semiconductor equipment. After dealing with other Chinese industrial equipment I would be hesitant to buy the lichaun drives. Technology wise they seem to be around what Mitsubishi had about 20 years ago with limited 2500line encoders. Another option is the Teknic Clearpath servo, it has the drive built into the motor and are pretty reasonably priced new and made by a company that has been in the servo business for a long time.

[@RotarySMP]

@@JerryBiehler I have bought a few components from South Korea which probably came out of Fabs.

[@paulmanson253]

Your Soviet men story I cannot comment on,but it is very similar to a verified story during Concorde development. The Soviets had their Concordski program and there really was a situation where Russian soles were used for information. Thing is the French were on to them and messed with their heads. Too many years since I read about it for more accuracy in details,but there will be some leads on the internet that will yield the proper story. Who knows,maybe the Russkies tried it either side of the channel. All the best.

[@RotarySMP]

I bet industrial espionage was (and still is) widespread, also between companies.

[@fredx6678]

When you could not find a way to hold the shaft to remove the spanner nut. My first thought was use an air impact tool. Prime example from experience is a motorcycle wet clutch. If you follow factory protocol a clutch hub/basket holder is necessary to counteract force applied to the large diameter shaft nut holding the clutch on. Wedging a screwdriver in the gear-train actually made me wince bringing back memories of past indignities I committed myself. With an air impact you can safely hold the clutch with hand pressure and remove the nut in about 1.5 seconds and zero effort. Much less just run the gun with the clutch free spool where drag in the gear train is enough resistance between hammer strikes for the nut to come loose.

[@RotarySMP]

I dont own an impact driver, but there was a wrenching hex in the opposite end of the shaft.

[@fredx6678]

@@RotarySMP Instead of the big tire changer 1/2 inch guns. Please look up "Chicago Pneumatic CP7722". It is not cheap but is the best in its class since at least the 1970s, Nothing from Snap-on etc. compare. A motorcycle mechanics best friend. 3/8" square drive and fits in the palm of your hand. Only 65ft lbs max torque, but perfect for machine disassembly / maintenance. Air flow / torque is adjustable on the swivel inlet from about 5lb minimum and you operate it with your thumb on a 3/4 length butterfly paddle on top. So unlike most trigger operated guns it has full adjustment forward and reverse. Right for right, left for left. Super comfortable and for at least the first 40 years was made in the U.S.

[@RotarySMP]

@@fredx6678 Thanks. How do modern battery rattle guns comare?

[@fredx6678]

@@RotarySMP Impacts do not use a clutch to release torque. They hammer with an open cycle in between, that is why you can hold the backing with your hand without twisting your skin off. A modern 1/4 hex impact is a fantastic thing when driving lag bolts in wood. The same effort will burn up the motor on any corded or cordless drill. The issue with 1/4 hex impacts is no torque control. All on, release in time before too many hammer strikes with no ability to really determine torque setting. With air impacts you limit the volume of air and not only audibly reduce the rpm, speed, strength of hammer strikes, and can accurately gauge the amount of torque applied. The requirement of variable speed impacting would relegate you to what is essentially a standard pistol trigger automotive style gun. The most popular is DeWALT 20v Max torque which is a good gun with a few caveats and a big positive. It cost 2 x + compared with a CP butterfly air impact. It is not nearly as compact as the CP where you hold it like carrying a machinists hammer handle without a head, and operate with your thumb on top. By design cordless electric impacts also have as many as 4x the hammer blows per minute of an air impact. So can not be used with torque limiters (which are essentially calibrated torsion bars). Also would suggest you should not try to hold the backer as there is not enough time between strikes for an object to rest without turning against your will (or the ability of a torque limiter to recoil). But the good thing, they are capable of high torque, for example 200 ft lbs with a break away torque of up to 400 ft lbs. So you can use it to remove automotive wheels.

[@fordkid9472]

Coming apart very smoothly with very little hardware to replace. Have you started planning the new electrical yet or am I jumping the gun. I imagine that portion of the overhaul/rebuild will be the most difficult. Now that youre this deep in how much of a difference from the Maho to Schaublin have noticed design wise?

[@RotarySMP]

I have some ideas for the new electrics, but need to start making some decisions. Good question. Although the Maho was built only 4 years after my Schaublin, the electronics are a different generation. The main improvement is the use of off the shelf Indramat drive hardware

[@robertfontaine3650]

Don't kknow if you keep track of the comments but .. I heard you mention barrier cream and gloves. I get eczema pretty easily from metal oxides. Was looking at ordering PR88 as a barrier cream. What have you been using? Similar question with the nitrile gloves. I wouldn't want to use them when running manual machinery but I expect they would save me from rash the rest of the time. What thickness of glove are you using? thanks, robert.

[@RotarySMP]

Hi Robert, Yes, I am using PR88. The nitrile gloves I use are these ones. amzn.to/3KzzlHy I generally do not use them when running machines, although they break easily enough, that I dont they are much of a hazard.

[@yagwaw]

Great video, great work, nice America’s cup chat - thanks a lot.

[@RotarySMP]

Thanks for the feedback.

[@gwharton68]

Only the Swiss would make a 10 pound cast aluminum oil reservoir. Would love to have one of them.

[@RotarySMP]

Nearly. It is cast iron oil reservoir. Although it is also the load path between the Z axis ball nut and the saddle.

[@cavemaneca]

Glad to hear that the patterning on it is just from a different type of grinding. I'm guessing that like a cup wheel grinding with the face of it? Anyway, seeing the progress you've made just reminds me of how much I have left to do on my own lathe...

[@RotarySMP]

Yep, like cup wheel grinding. There is always a lot more to do. The journey is fun though.

[@cavemaneca]

@@RotarySMP I've just been stuck into the side project of figuring out how to etch machine plates so I can replace a couple that had moderate damage. There's a lot that just goes into preparing and applying a quality mask layer...

[@TrPrecisionMachining]

very good video rotarysmp...thanks for your time

[@RotarySMP]

Thanks for watching.

[@eugencsl]

Beside that galvanized pipe you should get some golden allen keys working with those fancy swiss machines, it s a must 😅 Nice video 👍🏼

[@RotarySMP]

I could melt down the golden swarf :)

[@AdrianTechWizard]

Tool marks right from the factory, adds character if you ask me.

[@AdrianTechWizard]

As opposed to marks from where the end user crashed the tools.

[@RotarySMP]

@@AdrianTechWizard I am hoping to avoid those on such a nice machine.

[@MF175mp]

@@RotarySMP will you keep the Chinesium machine also or do you plan on selling it?

[@betaich]

Hi rotary, a question came to my mind: If you would find a broken part on a machine like this, would you have a chance to get spare parts? Like for example if the tool mark would turn out to be a deep crack.

[@RotarySMP]

Schaublin still makes the 125-CCN, and you can definitely get parts for it. A friend has one, and bought a new gib. It was not even excessively expensive. I doubt they would still have original 125-CNC parts, but haven't asked them.

[@anomalousnessness]

Thumbs up for your choice of music

[@RotarySMP]

Thanks for the feedback.

[@claeswikberg8958]

man, those ways are B-E-A-U-tiful

[@RotarySMP]

This machine is in really good condition. Especially considering it is 40 years old.

[@claeswikberg8958]

@@RotarySMP indeed, loving the disassembly and cleaning! shows of the mechanics and inner workings in a great way

[@RotarySMP]

@@claeswikberg8958 I really like to see how Schaublin made this. The castings are fantastic. That is why I was really surprised that the one cover was only cold rolled steel.

[@whatevernamegoeshere3644]

I would really like it it you made a holder for the razor blade. I get cramps in my finger looking at you hanging onto it lol But that aside, it would be better for safety as well because if you snap one on the push stroke, you will be in for some fun.

[@RotarySMP]

Good point. Thanks for your concern. Safety is important.

[@sebby_cnc]

our last mecanic at work always had a big piece of rubber and a homemade clamp to hold the ballbearing screw so i think if you have a big piece of rubber and then clamp it in your vice im sure youll get that nut off your lucky you got it apart so its smaller our mecanic always had to deal with that when the spindel was in the machine :))

[@RotarySMP]

The eagle eye viewers pointed out that there is a hex wrenching socket in the far end of the ball screw. No gripping these in a vice.

[@kimber1958]

Oh beautiful machine

[@RotarySMP]

The Swiss made a really nice job of this.

[@MrAirsoftmodz]

Hey im 10min in, you obvs can't hear me but I've been trying to tell you to use the ring spanner like a flogging spanner. It's not great or get it first hit but that or a brass punch would get that off whilst still on the machine.

[@RotarySMP]

I don't like using a punch to turn that form of nuts. Always ends up with slogged out wrenchng slots.

[@MrAirsoftmodz]

@@RotarySMP that is deffinantly true, have seen more damage with slipping pin/ c spanners. On our cylindrical grinders and surface grinders at work. I'm really enjoying you attention to detail. I'm the guy to use correct tools working with my mentor thought me to not walk far away as he would just do it another way before I got back lol.

[@antonwhittle415]

You've cracked my head wondering about your sorting system. You must have some kind of detailed index/system, with BOM tracking to have a hope of putting this back together right. RIGHT?

[@RotarySMP]

Well..... I wish. My system is gravity based. I pull off a part, place it on the nearest horizontal surface, and if it doesn't roll away, it lives there :-/

[@squelchstuff]

Ample video and photos to document what and how things came off works..... Until the memory card is accidentally wiped of course. Ask me how I know?

[@RotarySMP]

@@squelchstuff I can recommend backing everything up to YT servos :)

[@squelchstuff]

@@RotarySMP Ahhh ha! That's what youtube is really for. Great tip. Now that I've watched how a Schaublin 125 lathe comes apart, I'll have to find my own. Got it. :)

[@antonwhittle415]

@@squelchstuff I'm not the only one thinking there is now no other lathe to buy apart from a Schaublin 125.

[@davidfarmer]

always a pleasure to watch your vids, reminds me that i need to work on all of my projects haha.

[@RotarySMP]

Get cracking ... once you finish watching :)

[@davidfarmer]

@@RotarySMP I got too excited last weekend, and tipped over a 2500lb hydraulic surface grinder in my garage while taking it off a pallet. it was apparently very top heavy. i was able to inspect the ways and they are in great shape haha.

[@RotarySMP]

Guys. I dont want to hear such things. I have to lift the Schaublin off the pallet soon.

[@davidfarmer]

@Tom S Yeah I actually had it off the pallet on the skates, but then when I was lowering it from the skates I lifted it about a half inch up, and it just slow motion tipped over. I tried to stabilize it then bailed. It didnt tip on its back, it landed on the back corner on a piece of conduit that had wires in it, which I think cushioned the blow. The top carriage came off completely, exposed the decent ways. The way I got it back up was rediculous, I bolted a thick piece of steel flat stock to the bottom of the casting. Then I welded up a triangular frame with a tube hinge that I bolted to the concrete to stabilize it and constrain it while I winched it back up. once it got half way I used a floorjack to slowly lower it back. I dont really want to put it back on the skates, so for now itll just stay in the middle of the shop. When I move the bridgeport around I can use small tubes to roll it, but the casting wouldnt allow for that. Im thinking a pallet jack is going to be the best bet.

[@davidfarmer]

@@RotarySMP Make sure you have someone there just in case haha.

[@johnlemmey7698]

Impact is the only way to undo those bearing lock nuts. Personally i would use a screwdriver as the plastic handle gives just the rite amount of shock absorbing.

[@RotarySMP]

I got it of without impact, using the wrenching Hex on the opposite end of the screw, which I had overseen, but everyone pointed out after the video :)

[@kennethnielsen1800]

did anyone see what looks like a internal hex in the end of the spindel

[@RotarySMP]

Hann43 bet you to it, but thanks for pointing that out. Did not think to check the far end.

[@klausnielsen1537]

No! A pixel aberration. Surely:-)

[@andycollins3978]

Re: the story about the Soviets. They shouldn't have bothered, the British government sold them the RR Nene engine to build under licence, back when it was one of the best engines in the world. NATO was suitably unimpressed...

[@RotarySMP]

Right, I was the basis of the Mig 15 propulsion wasn't it?

[@andycollins3978]

@@RotarySMP something like that. It certainly went into something that the west would have preferred to be powered by a typical 50's Soviet piece of s**t

[@kirkmattoon2594]

That was the Attlee Labour government, which was stiff with fellow travellers.

[@mrspeaky6885]

Where do you get rid of all your oil waste and dirty towels tho

[@RotarySMP]

That all goes to the local recycling. In Vienna, instead of the Mob we have the "Carrot Ballet", M.A48 waste management is part of local government, and the guys all wear orange.

[@antonwhittle415]

@@RotarySMP makes sense. Citrus breaks down oil.

[@paulmanson253]

You guys might want to chase down the sayings of baseball player Yogi Berra. He was known for hilarious misuse of English.

[@RotarySMP]

There are a few NZ rugby players who were also poet philosopher.

[@paulmanson253]

@@RotarySMP Oh,really ? Care to give some names I can chase down and find out?

[@RotarySMP]

@@paulmanson253 I cantremember which one but " I was a game of three halves" is not only a soccer saying :)

[@paulmanson253]

@@RotarySMP Yogi Berra was catcher for the NY Yankees,1946-1963. His mouth would run ahead of his brain,and out would come some truly wonderful observations. You can observe a lot just by watching. Even Napoleon had his Watergate. So I'm ugly. You don't hit with your face. No matter where you go,there you are. And It ain't over till it's over. If you dig up some similar stuff from sports,from players familiar to you,by all means share. Well meaning stuff people can enjoy is all too rare. Cheers.

[@matsdavidsen1717]

To get that nut loose on the ball nut, simply use a steele hammer and give the wrenche a quick wack. This gives the same effect as a impact wrench.

[@RotarySMP]

Not necessary. Schaublin put a wrenchng hex in the other end of the screw. I just didn't see it.

[@matsdavidsen1717]

​@@RotarySMP ahh, the swiss had it all figured out :) Keep up the great work, looking forward to the IO and controller parts coming!

[@joell439]

‘Look, I think the future is something the future has to worry about”. 🤪😜🤪. I’m not worried

[@RotarySMP]

I really liked that too.

[@robertfontaine3650]

Major cleanup on the tear down but the fit is amazing

[@RotarySMP]

I am really glad they used that cutting oil rather than an emulsion. It makes for a sticky mess, but was also a good corrosions protection. Thanks for watching.

[@robertfontaine3650]

@@RotarySMP I am enjoying your videos immensely. I occasionally imagine trying to buy a Chinese mini mill and lathe and doing the work involved to make them moderately accurate. Usually after a couple of weeks of research I realize what that entails and stop. :)

[@RotarySMP]

@@robertfontaine3650 Hope I helped with that decision. You are much better off modernising a small CNC lathe, like an Emco or Hurco than retrofitting manual machines.

[@spaghetticallahan9292]

I'd love to see the pile of parts removed from this bad larry. Keeping track of all that hardware, I'd venture to guess, is a bit of a nightmare.

[@RotarySMP]

Lathes are pretty simple, and most of the parts are kind of self explanatory, but apart from bagging fasterners and writing the system they came from, no realy system.

[@spaghetticallahan9292]

@@RotarySMP I appreciate the reply. I have watched all the videos of the Mini-Lathe CNC Conversion and have been hooked ever since. My excitement when I see your uploads rivals that of Tony or that fella with the landrover rebuild. Excited for the next video. cheers.

[@RotarySMP]

@@spaghetticallahan9292 Thanks for the feedback. That is very encouraging.

[@TheMetalButcher]

10:05 Just clamp the screw in plastic soft jaws, or build a bearing locknut socket for use with an impact. Good to have anyway.

[@RotarySMP]

No need. There is a wrenching hex in the opposite end, which viewers found.

[@max_eley]

Very good stuff, thanks for sharing : )

[@RotarySMP]

Thanks for watching.

[@dmitryserov5595]

Ukrainian boxer Klitschko is famous for his philosophy 🤣. Not sure about accuracy of English translation, but still funny one: "In the Odessa region there is a city 50 kilometers away. You know, distance is not measured in kilometers. Two hours… 50 kilometers, you need to drive two hours." Now he is politician.

[@vincei4252]

lol. Says a lot.

[@RotarySMP]

@@vincei4252 Athletes are the true Poet-philosphers of our era :)

[@vincei4252]

@@RotarySMP Antiquity had Plato, Plinney the Younger, Cicero, Socrates, Aristotle, you name it. The 21st century has a bunch of planks and idiot politicians that are elected for their looks. There's nothing like progress, eh? Bread and circuses - the Romans knew a lot about the masses.

[@RotarySMP]

@@vincei4252 :)

[@alexkart9239]

"Not everyone can look into the tomorrow... Not only all of us can do that." (C) Vitaly Klitschko

[@neillawson4493]

The absence of wrenching flats kind of shows you how often Schaublin expected it to come apart. And they were right if this is the first time in 40 years...

[@RotarySMP]

:) good call. But they did put the hex socket in the end of the shaft. Just the end I didn't think to look in.

[@SidneyCritic]

Pretty ironic, because the UK gov sold off their jet engine to the USSR anyway. It says MIG15, but I think they improved the design for latter MIGs.

[@RotarySMP]

Yeah.I read that.

[@nikolaiownz]

Whenever you are done with your current projects i got a big lc30 that i would like to hire you, your allen pipe and toothbrush to fix up. Hahahaha Good sunday to you mate 👍

[@RotarySMP]

Hi Nikolai . I missed your last video althogh I have notification on. YT is weird at times. I look forward to your LC30 series. :)

[@nikolaiownz]

@@RotarySMP haha i dont think i ever Will have time to fix that. I have hired a lathe guy and we talked about taking the turret off and fix the locking problems it has when we got a few days down time. But tbh i dont really have the patience fixing stuff up like you have haha. But it has some coolant problems with some blocked channels and the turret index plate must be woren out, because sometimes it dosent lock certain tool positions when there is some bigger heavy tools on the turret.

[@RotarySMP]

@@nikolaiownz You have to have them working to make money with them. I am in awe at anyone who goes into the machining business. I just play at it on the internet :)

[@nikolaiownz]

@@RotarySMP something i also think what the hell am i doing haha. These last two months have been rough to say the least. Haha But atleast the work is kinda good right now

[@RotarySMP]

@@nikolaiownz I guess it is a constant balancing act of feast and famine. More work than there are hours in the day, and then you finally get a slow week, and start getting freaked out how you pay next months lease on the DMG. You are a braver man than me.

[@mnoxman]

For the frozen shaft try squirt/drip in some mineral spirits or kerosene every hour or so. See if that give you a bit of play.

[@RotarySMP]

Good idea

[@ogaugeclockwork4407]

Nice!

[@RotarySMP]

Thanks.

[@turningpoint6643]

On say a cheap off shore machine tool then poorly done face milling or fly cutting with tool marks left as is could be expected. With anything Schaublin made? Not a hope. So with a arc pattern like that then it's definitely Blanchard grinding. Oddly enough my much lower quality South Bend shaper and Atlas horizontal mill also have unmistakable Blanchard grinding marks as well. The difference with them and unlike your Shaublin, I think it was done in an effort of cheaply producing sort of an oil flaking effect since it's on the way surfaces and it seems to work as intended. It's generally considered that Blanchard grinding isn't all that accurate compared to real surface grinding. I've seen mentions of about .003" - a high of about .005" for flatness over larger surfaces and distances. If that's true I'd still expect Schaublin to have there Blanchard grinders set up better than that. But on unimportant surfaces that still may have been good enough, so who knows.

[@RotarySMP]

Good points. I kind of wonder whether there is a galling risk as the two surfaces polish the ginding marks off over time.

[@turningpoint6643]

@@RotarySMP Probably, I think Blanchard grinding might also be more of a debris trap unlike real oil flaking where the oil grooves are a lot wider, shallower and more rounded. The deeper oil channels cut into slide surfaces on well used equipment always show build ups of wear particles and dirt. The Machine Tool Reconditioning book made me paranoid about poor maintenance. I pull my Bridgeport clones table and Y axis apart every year or so for feed screw, nuts and slideway cleaning and do the same for all the lead, feed screws and slides on my lathe. Both still have almost the same back lash numbers as when I bought them.

[@MakarovFox]

7:05 that looks like a alen key hole

[@RotarySMP]

Yeah, everyone saw that except me :)

[@MakarovFox]

@@RotarySMP nice thing you where recording

[@ViniciusMiguel1988]

Based on your schematics your drivers are step/dir. You could keep them and if they fail replace them by any modern one.

[@RotarySMP]

They are simply too massive and bulky, togther with their massice transformer.

[@mrspeaky6885]

When your weekly dose of rotarysmp got uploaded and you are still not done with your own project (FP4A mill)

[@RotarySMP]

:) Plug away at it. My Maho converion took me over a year.

[@mrspeaky6885]

@@RotarySMP thanks btw for spectating the forum thread. Well ive only been at it for half a year so i am still fine haha

[@DPTech_workroom]

👍

[@RotarySMP]

Thanks.

[@DuRöhre4711]

UHU Servo comes to Mind when I look at the DC Motors. But I'm no Control Pro. I'd go with Centroid or Masso as a Controller these Days. I like the fact that Masso doesn't use a PC in any way.

[@RotarySMP]

I will stick with LinuxCNC and Mesa Cards as I have some knowledge there.

[@plang42]

So who is your fav MotoGp rider? #93 😁👍

[@RotarySMP]

Vale! Ever since he spoiled Stoners day passing down that corkscrew at Laguna Seca about 15 year ago. Although the way Marquez can uncrash a bike took the sport to a new level.

[@Jacob_Dwyer]

Soo much more excited about moto gp than f1. Bernie's Bandits are so tired with their drum up patter to make you think that it is going to be anything else but Mercedes and Hamilton. Hamilton and Mercedes.

[@RotarySMP]

@@Jacob_Dwyer I agree. When you look at the old F1 coverage, the tracks were bumpy, the cars moves around, you could see the dirver. Now it is so sterile. MGP you really see the guy working hard on those bikes. Fantastic racing in all three classes. Will be interesting whether #93 ever regains his dominance. It is hard to come back from such injuries, and the temptation is to push harder, and injure yourself more. This is the secret of Rossi. He has rarely (for a MGP rider) injured himself.

[@Jacob_Dwyer]

@@RotarySMP also: gunge. I've always called it Munge, but gunge is very Southern hemisphere.

[@smallcnclathes]

Thanks for your comment on my latest video, just want to let you know I deleted it by accident when trying to remove one that was spam. Delete this when you have seen it. Did not want you to think I was being rude.

[@RotarySMP]

No worries.

[@na57y]

this week I've got galvanized water pipe :D

[@RotarySMP]

Thanks for noticing

[@Shreyam_io]

11:21 oddly satisfying Haha

[@RotarySMP]

Yeah, I thought the same when I videod that.

[@junchang132]

I am looking for gold today 😁

[@RotarySMP]

:) Thank for watching.

[@loiclegault364]

Please, get yourself a razor blade holder! Safety is number one priority!

[@RotarySMP]

Yeah, I hear you. Thanks for caring. Safety is important.

[@MakarovFox]

next weak, lead water pipe hehe

[@RotarySMP]

:) I already melted down my old lead pipes and put them in the counterweight in the camera stand.

[@MakarovFox]

@@RotarySMP oh yeah i remember now

[@jasonruch3529]

Zero backlash do to the 200lb gorilla that tightens the spanner nuts at the factory lol

[@RotarySMP]

I hope not.

[@ferb7452]

Yep it’s true the Russia s did that

[@RotarySMP]

Then they got sold the engines anyway :-/