Rebuilding a Schaublin 102 compound slide - Part 2

[@cliffordarrow6557]

Stefan, absolutely brilliant. Complete end-to-end treatment of worn dovetail recondition from problematic tightness to final rigid smooth travel. New gib fitment. Novel (to me) use of mill to fine tune gib taper, novel use of magnetic chuck to hold iron gib while scraping (I used nails/screws on a pine board), quantitative analysis of gib tightness using relative indicator motion from slide to guide, discussion of normal dovetail wear (middle vs end). Delightful to watch. Bravo and congratulations on a very well thought out comprehensive ,2 part video on dovetail scraping.

[@bobgodburn5874]

Excellent tutorial on the geometric elements of scraping in theses videos. It was like I was right along with you at every step-I almost felt like I needed to clean the blueing off my hands when you were done! Keep this up, you have one of the best channels on KZbin, Stefan.

[@tobyw9573]

Whale oil is great! I’ve never seen a rusty whale.

[@roleic7246]

Brilliant project, Stefan. You have learned very well from Mueller Nick and Richard King and have perfected your skills. And now you let us benefit from it. Of course you made it look easier than it is... :-) But "only" seeing the measurement methods is very instructive. And I think in some video King said that the measurement methods and the right sequence of scraping the different surfaces is much more key to success than the actual scraping. You have demonstrated that insight in a very clear way. Thank you for that.

[@ROBRENZ]

Excellent work Stefan, I am sure Richard would be proud of you! ATB, Robin

[@StefanGotteswinter]

Thank you Robin! When I do scraping I have always Richards voice in my head :-)

[@DanielPerez-bn9bi]

What an excellent two-part series! I always enjoy the attention to detail and high quality standards you present in your videos. Thanks for sharing!

[@johndavis4800]

Once again you blow me away with your consummate skill and with your fluency in a second (I'm assuming only second!) language. I'm just a hacker, but you make me proud of my third generation German heritage. Keep up the fine work.

[@andrewdolinskiatcarpathian]

Why do we watch Stefan? Well, in his own words ‘not just good, but perfect’. Another masterclass. Thank you.

[@Fumingzeus]

I like your sense of humour, I could hear you giggling in the background. Thank you for this vlog and for brightening up my day😄

[@RambozoClown]

Thanks for all the measuring details. Very informative video series on a start to finish job for this piece.

[@TomChame]

A full hour of perfection!! Great explanation of gib fitting, thank you.

[@bob_mllr]

Excellent video and very informative on measurement. Also take away line ..... “setup and confidence “. Thanks Stefan!

[@tinkermouse-scottrussell3738]

Elliot Lake, Ontario, Canada. Nice project Stefan, enjoyed watching this one all come together thanks for sharing.

[@1978plankton]

Thank you for making this video series. Very helpful information presented perfectly! As a recent graduate of an apprenticeship videos like this are super helpful resources!

[@jonathanbolduc6361]

Great series! I especially enjoyed the thought process and stepping through the measurement process.

[@StefanGotteswinter]

Thank you! As Mr. King always says, scraping is easy, knowing where to scrape is hard :D

[@arnljotseem8794]

"One or two interesting points" is an understatement. Lots of useful info in this one also. Excellent, and thanks for taking the time to make these videos. I keep going back to your videos for reference. They really help me improve my skills and knowledge, and are helping me on my way to become a halfway decent hobby machinist.

[@cliffordarrow6557]

Also, thanks for pointing out the precision ground ring on gib adjustment screw and tight fit with mating slot on gib. I have a sloppy gib adjustment screw (gib slides in and out when changing axis direction, causing dovetail to alternately loosen and bind) and will try a more precise ring/slot. I was going to try adding a second opposing gib adjustment screw to sandwich gib simultaneously from 2 opposing directions, but didn’t have room on machine. If it’s good enough for the Swiss, it’s good enough for me!

[@stretch130MFE]

Beautiful work as always! Thanks for the continued education.

[@akfarmboy49]

Thank you Stefan, I like how you clearly explain your steps, i like the mag base idea, like your straight edge, way oil humor got me laughing. this all goes into my mechanical brain.

[@robmckennie4203]

My new ring tone is the sound Stefan makes when he accidentally bumps his indicator. Ehhl!

[@StefanGotteswinter]

Hey! Do I get royaltys from that?

[@mrcpu9999]

I've watched this sequence and the lathe compound rebuild at least twice... Fascinating stuff.

[@larrysnell9934]

I immensely enjoy your videos, I am learning a lot. You are a terrific craftsman. Thank you for taking your time to make these for all of us out here. I am a home hobby "machinist" and your work inspires me to try new things. Best regards, Larry Snell

[@BuildSomthingCool]

Great job on the video. I always learn something from you.

[@StefanGotteswinter]

Thank you Dale!

[@davestahl572]

Nice work Stefan. As always, a wealth of food for thought. This is most helpful whilst I am in the middle of fixing some horrible dovetails and warping on a Chinese mini mill table ( shaped like a banana ). Thanks for adding the detail that you put into your videos, it clarifies quite a bit for those of us who have never done some of the things your doing, but are trying to learn to do with our own projects.

[@sblack48]

They don’t season or stress relieve the castings on those machines in china. They couldn’t be bothered. You are not the first to get a banana.

[@basildouglas855]

A great job, very entertaining. Well done, watching your two videos on this cross slide repair is almost like watching "poetry in motion".

[@markuseinfalt9410]

Ich finde diese Arbeit von dir so toll, das wertet diese Maschinen so sehr auf und ich würde das gerne bei meinen Bernardo Maschinen machen da die Laufbahnen eine miserable Oberfläche haben und leider bei der Fräse die Z-Achse im oberen Bereich sehr schwergängig wird. Leider habe ich die Möglichkeiten nicht dazu. Die Granitplatte von der Hoffmann Group ist auch nicht all zu billig obwohl das eine perfekte Referenz wäre. Dann braucht man ja auch noch das perfekt geschabte Prisma zum Tuschierpaste auftragen usw.. Ich hoffe ich komme mal soweit um meine Maschinen so weiter optimieren zu können. Da kann man richtig viel rausholen aus den Chinesenmaschinen. 😲👍🏻

[@bugrobotics]

A joy to watch Stefan. Thanks!

[@StefanGotteswinter]

Thank you!

[@garyc5483]

Excellent job Stefan. Your attention to detail is great. Always learn something new from your video's. regards from the UK

[@mirceabascuti]

Excellent job and excellent video, Stefan! I always enjoy your videos even if I'm not commenting on all of them. Keep them coming.

[@DudleyToolwright]

Very informative part two. I was making guesses as to how you were going to match the dovetail sections. I really learned a lot, thanks.

[@jjwhitlatch]

I just picked up a 1960's Bridgeport with a J head. I just installed a new motor and VFD. Now, you're making me think I can redo all the ways. I don't know if that's a good thing or bad thing, you make it look doable if you take your time and have the patients. I don't know if that's a good thing or a bad thing lol. Great video!

[@WeaponsMachinist]

Thanks for the video series it was fun watching the procedure's as usual.

[@tinker5291]

Splendid video Stefan! Your skill and attention to detail is truly inspiring.

[@bartharkemametalworks2299]

Great work Stefan, I have a Schaublin 102VM and 13 Mill that i will restore. But i need a lot more practice for scraping. So thanks for sharing. Greetings for the Netherlands.

[@incubatork]

Great video, Richard king will be proud of you and also himself for being able to teach his skills in a way that a student can carry out something like this. looking forward to more precision videos.

[@davidtaylor6124]

Those two videos went by very quickly - so interesting and good explanations - thanks!

[@radriand]

Hi Stefan.... Is there a chance you can do a video on general theory of dove tails slide ways. ( shop phyiscs) Why are certian angles used? Should the bearing be on the top surface or the bottom surface for a given machine? Is it ever both? or even top on one side an bottom on the other? Do you put a chanfer on the tapered gib for clearence in the tight corner of the dove tail? Where should the gib side go in relations to forces? I know designing machine with dove tail slides is old school, but I am wondering what your thoughts are. I was going to scrape in very old lathe cross slide, its very worn and I can not tell what the the bearing surfaces are/ were. It looks like both the top and bottom on the head stock side and bottom of the tail stock side. It looks like it might have been originally made that way. So many questions. I loved the tip about relieving the short component to pre - wear it for longevity.

[@lizardkomodo]

Great job! Thank you, Stefan. Can you clarify one more moment? When you reduce the planes of the dovetail, the gib goes a little deeper, as a result, the upper part moves horizontally to the left (or to the right, depending on the side of the view) from the axis of the screw. Is it offset important?

[@pifpaf3329]

I love the double glasses safety .....Perfect in every aspect....

[@paulmace7910]

Thank you Stephan. Great video. One question though. When scraping the gib do you blue it to the mating surfaces or just to the straightedge?

[@TomiBasel]

This was an awesome run. Really informative. I hope you'll also get one of these soon - therefore we can take a glimpse on a Schaublin makeover ;) Great job, thanks Stefan!

[@bobuk5722]

Oh! That answered my question on the other slide about using a magnetic table. "Scrape it anyway" - hmm, definitely a perfectionist! Cheers Stefan. BobUK.

[@AlexandrosNikolakis]

Just perfect!i am wondering how much money would a fix like this cost?

[@outsidescrewball]

Great work and video....can you share how many hours it took you to complete including and estimate of video time

[@cliffordarrow6557]

Also, also. Nice analysis on leadscrew nut binding using the indicator yet again. All in all, excellent attention to detail.

[@Watchyn_Yarwood]

You never cease to amaze me with your precision and your video content! Well done!

[@ReubenSchoots]

Thanks for this Stefan! Brilliantly explained and a pleasing result with the fitting of the gib.

[@NuclearHedgehog]

I was on my way to bed but what can you do when there is a new gtwr video out. Great job and good tips about measuring stuff.

[@michaelkoch2109]

Sehr gute Arbeit! 👍👍👍

[@dennisa6132]

That mechanical advantage is a big deal! My milling machines X-axis was stuck when I got it, because the gib wasn't properly lubricated so it galled in place and the table kept moving and bent the adjusting screw. Took me over a week of work to get it loose, using pressing jigs, penetrating oil and whatnot. Still managed to salvage the gib, had to make a new tab. And a new screw too, and patch the galling damage.

[@jeffreylehn8803]

thank you for making this video series

[@eliduttman315]

Stefan, As always, your workmanship is ABSOLUTELY 1st rate. When you're on the job, Teutonic thoroughness and precision are NOT legendary. Whatever the cost to the client, that party got a BIG bargain. Wunderbar!! Eli D.

[@stephanuhu963]

Excellent craftsmanship and presentation, as always Stefan! Lots of great insights here. That's the difference I guess of starting out with a Schaublin: It is worth lavishing such master craftsman maintenance on it over many decades of life, vs. throw-away Chinese lathe once it shows wear.

[@SolidRockMachineShopInc]

Hi Stefan, Nice job! Being your first new gib fitting,real nice! Steve

[@MikeB_workshop]

Nice ! I'm fixing my Chinese Milling machine , on your movies I'm learning how to measure and about basic scraping . I watch also some Mueller Nick and Richard King movies on YT and other related to scraping . Really nice movie I also enjoyed other movies on your channel , nice work and keep going that way :) Cheers

[@eddyfontaineyoutu100]

Super Stephan ! You dare everything !!!

[@wrstew1272]

I see that you have spent top euro on that precision clamp! We have the same store here for semi disposable items. Do not buy their awls though, cheese grade minus or worse. Great explanation of complex area to make it seem doable. Another great video!

[@cliffordarrow6557]

Also, also, also. Very nice technique measuring dovetail parallelism on your surface plate using pins, right angle block, parallel, and indicator. For me, this is the toughest number to measure but is perhaps the most sensitive to nailing the dovetail travel tight and consistent.

[@johnmcdyer7297]

Not to shabby Stephen my goodness you are the dogs doo dahs brilliant

[@StefanGotteswinter]

I am always critical off my own work :) Thank you!

[@robertklein9190]

Very well done Stefan, BTW Captain Ahab was not going to run Moby Dick thru a blender, just had to boil whale to get the oil. GM used to sell it to take the chatter out of Posi-traction rear diff.

[@Cryoss99]

in fact, in the early time of industrialization they probably used whale oil as way oil because most lubricants where obtained that way

[@chowtownpiper]

Robert Klein, when I pulled the diff off of my 67 Camaro it had that whale oil lube in it, stinks to high heaven

[@establisha]

haha, subtitles always get what he says so wrong, everytime xD keep up the good content Stefan;)

[@TheHawkster16]

Loved the video! One question though: When you blued and rubbed the slide around 8:08 how do you know that the geometry of the way is not convex? I understand that the slide's surface is flat and that the parallelism between the two ways is not important, but if the way surface was convex, it would cause problems (at least in my imagination!). On a surface plate we would rock the part to check, but that isn't possible here.

[@DudleyToolwright]

The clamp you are using to hold the parts says "Pittsburgh" . That is a Harbor Freight (Hazard Fraught) brand. Do you have this retailer in Germany?

[@StefanGotteswinter]

They came over from the US via carrier piggeon :)

[@KtFuhrhalterei]

Hallo Stefan Danke für das Video. Überholst du die ganze Drehbank? Scharbst Du auch das Bett. Ist schon lang her wo ich Führungen gescharpt habe so irgend wan um 1995 das Letzte mal. Ich sollte aber meine Weiler LZ 280 Komplett machen. da helfen mir Deine Videos. LG Manuel

[@StefanGotteswinter]

Freut mich wenn die Videos tatsächlich helfen :) Nein, ich mach nicht die ganze Maschine, vorerst nur den Oberschlitten und irgendwann mal noch den Planschlitten.

[@RaptorMachineToolCo]

Excellent job Stefan!

[@flugschulerfluglehrer]

This video is not only good - it is perfect ;) I admire your dedication to precision.

[@atmel6223]

How did you rescrape the doughtail of your milling mashine? The mashine bed is a very big part, where/how did you place your reference? It is not possible to put it on a reference plate... How do you rescrape the bed of a lathe? After all it has to fit to the spindle. I have problems to imagine where to put the reference when dealing with big parts.

[@FrustratedBaboon]

You gave me confidence to fix my new lathe. I hope that I can make it new.

[@Maxi-hs5nk]

The master in Action, appreciate you explaining why you do what you do. It really helps understanding the process. Thanks Stefan, one thing I can't work out is why you don't have more subs??

[@ls2005019227]

Great project! There's a lot of quality information in this series. One question that remains for me though; after scraping the portion of the dovetail parallel with the top of the slide, how did you measure/scrape the angled part of the dovetail to maintain the correct angle while concurrently correcting the distance between dovetails? Excellent work!

[@PhilsProjects]

very interesting Stefan. wonderful demonstration of the process. fin danke

[@skoulatos]

This is an excellent series of videos on a compound slide. When is the turn for my Simonet slide? ;) It has a similar amount of wear and the end result here is just so perfect! I love it! :)

[@barrygerbracht5077]

Very well explained process. Without filming, how many hours do you think this process would have taken?

[@StefanGotteswinter]

Thank you! Without filming something like 7-10 hours. Depends on how often I run for the coffeemaker of check my phone ;)

[@normanodekirk6766]

Thanks so much for this video. You have a good way with your students/audience. 👍

[@marceloiannini8199]

It seems that Schaublin manufacturers these hubs in 4 different thickness, from 4.0 to 6.0mm on the thicker side. It may be due to compensate wear on the slides. They have one that is the standard, which I suppose that equips a new slide. I have the technical drawing showing this.

[@CapeCodCNC]

Spectacular video Stefan! Did you know that General Motors used add whale oil to gear lube for limited slip differentials? Best LSD oil ever! The best oil for machines is humpback, but finding a megalitre blender is tough...hahaha :)

[@JBFromOZ]

You mention that surface grinder may have done better, I am curious why not grind the gib to size? Only thing I can think is maybe fitting setup under the wheel may have been an issue, for that perhaps a sine plate though? Perhaps no magnet sine plate... never mind, perhaps I answered my own question!

[@StefanGotteswinter]

Youre right, the setup would not fit on my tiny grinder. I am already looking for a small sine-magnet ;)

[@jsainz]

I was wondering if the old gib could have been used as a reverse tapered shim, but perhaps it had too much wear?

[@johnferguson7235]

A very nice pair of videos. We will give you a nick name, Stefan Spielberg Gotteswinter, because you have developed into an excellent producer and director. Definitely THUMBS UP. Thanks for posting.

[@886014]

I didn't realise Bessey made toolmaker's clamps. Are you happy with them and do you think they're worth searching for? I have some cheaper ones, and haven't ever been very happy with them. While they're not difficult to make, it would be just another job on the seemingly endless list of jobs to do. I have other Bessey clamps and have always considered them good quality.

[@StefanGotteswinter]

They are ok - But its one less thing I have to make myself ;)

[@886014]

Ok thanks. Yes indeed, for simple things like that if I can buy them off the shelf and they're acceptable quality I'm not going to waste time making them. Nice scraping job Stefan, I did something very similar on my own lathe, and have 2 more machines here waiting their turn. I need 25 hours in the day!

[@sirlurk_calot]

Very nice Stefan. Thank you for sharing.

[@MrDjgips]

Hi amazing job there, could you please make a video about the power scraper you were briefly using in this project. By the colour of it I assume it was Fein? if my assumption is right it would be really nice to see the guts of that maschine. vielen Dank

[@StefanGotteswinter]

The sraper itself is a Renz - The motor is Fein, correct. Unfortunately I will not take it apart - I need that think in working order, cant risk to take it apart without a very good reason (like mechanical failure). But I think you will find photos of the guts of a Biax scraper online - They should work very similar.

[@MrDjgips]

Understood, thank you very much for the information.

[@MegaCountach]

Great video Stephan, thanks for sharing!

[@nunomiguelrodriguessilva3028]

Thank you for sharing your amazing work. Very educational video. Greetings from Portugal

[@kvsteve]

Wonderful video. Harbor Freight handscrew clamps in Deutchland?

[@StefanGotteswinter]

Yes! A friend brought them over from the US, along with some HF screwdrivers. Thanks for watching!

[@ronalddavis]

@@StefanGotteswinter your friend must not like you very much

[@roleic7246]

Thanks again for the instructive video. Of course you make it look easy by skipping much of the scraping. But it is understandable to keep the video length reasonable.

[@StefanGotteswinter]

Yeah, I have to skip a lot of the basic "flat" scraping because its always the same, gets boring and I want to get work done, which does not work to well when you try to film at the same time :D

[@tobyw9573]

I wonder if that gib is for a larger machine or a larger slide on the same machine. In most any case the gib must be oversize so how much more effort to make a little smaller or a lot smaller? Good thinking if you need one superb part to service many different old machines. Can you tell if it fits the cross slide too?

[@StefanGotteswinter]

I recently learned that you can get the gibs from Schaublin in different thicknesses to accommodate different levels of wear. The owner got one on the thicker side, just to be safe.

[@mikeysgarage3697]

Oh, way oil! I always though it was whey oil, hence my looking up how to get started in cheese making, lol!

[@jabernathy2595]

Great work as always, Stefan. Thanks

[@EZ_shop]

I thoroughly enjoyed this series

[@jonka1]

Thank you for this fascinating demonstration of your work.

[@Teunbaartman1]

Wow video again!!! where did you order die Magnetspannplatte?

[@magnusklahr8190]

Great video! I have to check my own. Its a litle bitt sticky in the ends!👍

[@boelwerkr]

Some parts I welded had more play than the compound slide after you fixed it up. ;-) Impressive work!

[@StefanGotteswinter]

Haha, sounds like all of my welds ;)

[@glennfelpel9785]

Stefan, do you have Harbor Freight over there in Germany? That 12" Pittsburgh Handscrew clamp looks like the ones we have from HF over here. Oh Yes, good video too. Thanks for sharing this scraping.

[@glennfelpel9785]

Barry I have seen you name around quit often, you must be a serious tinker yourself. Thanks for the information...didn't know much about Harbor Freight except for the tools.

[@royvermeulen2167]

That is the best work I have ever seen. You do fantastic work on everything you do . Great video .how long dose it take to do the hole job.

[@RRINTHESHOP]

Great job, very nice. Thanks for sharing.

[@rupertpowell]

Great video and full of skill. One question - are the gibs made from iron or steel?

[@StefanGotteswinter]

Thank you! Generally most of them are cast iron. Thats also the reason why they break so easy ;)

[@fabioth283]

Gib block on magnetic plate?is something wrong.why you did it?cant block the gib with wood?

[@gertskjlstrup1804]

Very nice as always! Ty Stefan