Small stainless machining - Flux capacitor parts

Visit my website for FAQ, a list of my machines, my products and some project documentations:
gtwr.de/
Consider supporting me on Patreon:
/ stefangtwr
I post very regular on Instagram:
/ stefan_gtwr
#practitioner_of_the_mechanical_arts

[@StefanGotteswinter]

I removed a small part of the video showing the final product, for compliance reasons. Don't worry, that does not alter the machining content, but I want to be on the safe side.

[@douro20]

Compliance... sounds like government work...

[@StefanGotteswinter]

@@douro20 Compliance is something absolutely common with industrial customers

[@HansWeberHimself]

@@StefanGotteswinter Compliance is industry 101.

[@ROBRENZ]

Beautiful work Stefan! As you can see, no one cares about video length when the content is excellent. ATB, Robin

[@StefanGotteswinter]

Thanks Robin! Seems like I will stay with the long format instead of splitting it up into 3 videos.

[@nkdm87]

Please do the video about tolerances. Bitte schon! Proooszę. I know it is dry, but it's crucial...

[@dcaonoek]

What you call "a very dry topic" to me sounds like a great video.

[@imagineaworld]

Seconded

[@SmoggyTurnip]

Thirded

[@ChevySampath]

Forthed!

[@dougankrum3328]

"dry".....parched....!

[@wrstew1272]

In the states we have a show called “how it’s made” that quickly runs through some of the ways that both usual and somewhat unusual items are made. None have the details let alone the rationale that you provide. The work that you consider fun, and the tooling you make to do it is fascinating! Thanks for the work that you have put into filming and editing your “hobby “ to educate and entertain those of us who enjoy seeing a master at work!!

[@adriaandavel]

Some people handle work with cranes, others with tweezers :) Definitely an example of mechanical art!

[@ronkennedy213]

WhooHoo a new Stefan video. Does life get any better.

[@danoneill8751]

No, no it doesn't.

[@thomasrappen5906]

@@danoneill8751 jep, life did not get better, but, another lesson learned, abd some fantastic vid to push it to the button pushers, talkinf bullshit about 1µ or 1/10 od a thou.. ;)

[@hermankrijnen6409]

Stefan, I admire not only your machining skills, but also your ability to explain so clearly what you are doing and show the tooling. I hope you will be able to continue this and teach us to work accurately.

[@justinw.4433]

Camera work & lighting is great and gets better every video. Makes the TOT/GTWR vids so much more engaging than others.

[@brianally1531]

I enjoyed this. A special thank you to your client for providing the "what for".

[@NilsJakobson]

Dont know what to say. Amazing workmanship. One of the best explained videos out there.

[@leonardocorti1919]

Yessss a video about tolerances! Do it please

[@stanstocker8858]

Excellent video. Thank you. As a recently retired clock and watch maker who makes some pretty small parts I find your videos to be absolutely top quality and inspiring. Best in all of your endeavors.

[@futten3230]

i hate being annoyed at high velocity pieces of metal impacting my skull

[@chrisstephens6673]

Did I enjoy it, yes I did. Lengthy? The time went in no time at all. Time flies when you are enjoying yourself.👍

[@NarfBLAST]

At 42:20 when you showed the aluminium sub-collet with all the featured bored in and a relief machined into the outside to make it flex and conform to the part better, I was moved.

[@sr20ser.]

"I do not have much interest in work with large material removal or large parts." That may be the most German thing a giant German can say. Well done on the parts & video.

[@gbowne1]

Well the Germans make some of the best very large parts as well.

[@bradley3549]

@Thu Nell Ⓥ Small pp.

[@jimmurphy6095]

We can tune in to Adam or Keith if we want the bigger stuff. Very interesting presentation, Stefan.

[@thomasrappen5906]

@Thu Nell Ⓥ ;) highly precise, over engineered, and, no humor... ;)

[@thomasrappen5906]

jep, Stef is a complete different clas of guys... it's beautifull even just to listen to the videos, while I'm in the toolshop... ok, too often I have to go into the room, to repeat and see, what he did.. ;)

[@2lefThumbs]

Great to see the detail on the tools you used for boring, the pin-orientation makes a lot of sense👍 It's also great that the customer allowed you to say what this particular "flux capacitor part" is actually used for👍👍

[@AdventureswithaVerySmallLathe]

I'd be really interested to get a better understanding of ISO tolerances.

[@erik....]

It's reasonably easy, look here for example: www.engineersedge.com/manufacturing/preferred_mechanical_tolerances_metric_iso_286_13166.htm

[@arnljotseem8794]

There is a couple of good YT videos on the topic. It is a really dry topic.

[@AdventureswithaVerySmallLathe]

@@arnljotseem8794 Thanks! I've started with FutureFab CNC & 3D Printing's "Limits, Fits & Tolerances" for starters. Let me know if you have any specific recommendations.

[@arnljotseem8794]

@@AdventureswithaVerySmallLathe Not really. I started on two , this one on " ISO fits" among them, from a fellow hobbyist: kzbin.info/www/bejne/rae5fqZod7-Xm7c but I didn't finish any of them. I instead read what Machinery's Handbook had to say about the topic, and also referenced Metal Engineering Textbook (Europa Lehrmittel) Gave me the understanding I needed

[@brianrhubbard]

It's all fun and games until you have to know GD&T. Fun but tedious.

[@paulmace7910]

Tom Liptons toothpick only hollow with an o-ring groove. Cool.

[@bostedtap8399]

Excellent work, that Guhring boring bar is impressive, I would need a macro lens to even see it 🤔🤔. Very impressive photography. Thanks for sharing.

[@localele1]

That 1mm deep hole drilling went easy using the "Sliding Head " function of the new lathe.Great camera work.

[@outsidescrewball]

Awesome video.....excellent discussion/demonstration/build....really enjoyed the end of the vide as you discussed the various tooling holder alignment......ATB

[@TomMakeHere]

Great video Stefan I think anyone coming here is truly interested in your detailed technical information, so the tolerance video would be a good one. I highly appreciate the experience and knowledge that you offer, it's not often I can sit through an hour long machining video Wow sounds like I'm sucking up to the teacher for extra marks lol

[@StefanGotteswinter]

Thank you!

[@Hoaxer51]

There’s a lot going on in this video, nice work! This almost looks like normal sized work until you see the boring bar size next to your fingers! It puts everything in scale. Thanks for a great video! That’s two days in a row, keep them coming!

[@301069patxe]

I am amazed by the perfection of your work. Seeing this micromachining makes me remember a very good professional stage of my life. Thank you.

[@agapiosagapiou]

Every time I watch your videos I admire haw sharp is your tools and the precision! Nice job! I love it, clear, precise, sharp, flow less accurate. f...

[@KravchenkoAudioPerth]

A great method of doing the right process and procedure at the correct time. Thanks for making this video and sharing it with us Stefan.

[@rodneykiemele4721]

With out a doubt, the best channel on KZbin ! Thanks a million. And it was one hour long - Awesome

[@RRINTHESHOP]

Nicely done Stefan. Love the indexing feature of the boring bar system.

[@richardbradley961]

THAT WAS FANTASTIC, ONE OF YOUR BEST VIDIO, SO WELL EXPLANED. REALY ENJOYED IT. THANKN YOU. FROM THE WINDY U.K.

[@melgross]

I love 303. I’ve made a number of different, complex parts out of it. What’s good is that corrosion resistance is equal 304, the most common stainless, but machines very easily. Very easy to cut thin parts, small holes, threading, etc. A major advantage is that it just work hardens slightly.

[@Smallathe]

Wish I could visit your shop. Love the elegance and accuracy of your work, and the deep knowledge level you demonstrate.

[@gyrogearloose1345]

Fascinating work as always. I like the way you do it Mr G! Thanks for all the tips and good humour.

[@bcbloc02]

1:01:34 I don't guess it matters that the through bore interescts with the angled counterbore? These parts are well beyond my shops capabilities. Most of my machines have run out that is half the size of the hole you bored. lol

[@StefanGotteswinter]

Yes, that does not matter, its drawn that way. Almost everything you do is also beyond my capabilities ;)

[@bfeitell]

I came pretty close guessing beam splitter. Another great video! Thank you for posting it.

[@DudleyToolwright]

Yikes! That was amazing work. It's hard enough to make big parts accurate, but the small stuff is a whole other game. Impressive work.

[@SamEEE12]

Blockbuster indeed. I learned a lot here, perhaps enough to consider reasonably changing my job title from librarian to apprentice toolmaker (or both?). The panning shot rotating around the centred radial cut was wonderful and almost like something a CNC could do which is a lesson in itself. *Smashes like button*

[@Rustinox]

Compared to what you do, a clock maker would be a hammer and crowbar mecanic. It's unbelievable.

[@bobvines00]

Stefan, thank you for this fascinating & educational video. Here's my vote for a video on ISO reamer specifications. Also, when you cut the slots with the 0.4mm slitting saw, how do you ensure that you get an "exact" depth of cut since slitting saws don't run particularly concentric with the spindle?

[@StefanGotteswinter]

I approached the work very slowly with the saw blade rotating, until until I got the characteristic *crrrrrk* where the saw blade makes contact for a fraction of a second and considered that my zero position, thats good enough in this case. The depth of the slot was not crazy close toleranced, its only for a springsteel clip. If I needed it more precise, I would do a shallow cut, measure the depth and then correct to final depth.

[@AJR2208]

Thank you Stefan that was very interesting - I didn't realise it was a lengthy video until you said "lengthy video".

[@joeszabo4237]

Very cool Stefan, I love the micro tooling you showed. Great video, thanks!

[@wayneacaron8744]

bravo stefan, BRAVO a tour de force. and you seem to have granted my request for more run-time, less editing. double bravo for how well you pulled it off! poppy's workshop says HI

[@Interwebstuff1]

I am another who really looks forward to your videos. I really enjoyed this one. Thank you Stefan.

[@fredgenius]

When you said '70µm drill' @43:03 I nearly had a heart attack lol!

[@emilgabor88]

Fred Genius dose 700um sounds better? I probably brake those just by looking at them...

[@fredgenius]

@@emilgabor88 Yeah, 0.7mm. Smallest I use is 0.35mm, they break if I look at them!

[@emilgabor88]

Fred Genius mie was 1mm ,the smallest that I could handle.

[@thefixerofbrokenstuff]

"Moustache sharpener" or "Smoke Grinder" or "pneumatic fluid displacement device" or even "Mechanical dog polisher" would be a good title for some of your parts.

[@StefanGotteswinter]

:D

[@tritop]

als gelernter Feinmechaniker ( in den 1970ern ) ist das für mich pure Entspannung; ich bräuchte eigentlich nur noch diese Art von Arbeit in meinem letzten Lebensabschnitt und sonst nichts mehr

[@ianbertenshaw4350]

That was Epic ! Plenty of good information and tips in that video Stefan ! Fantastic camera work also , I can only imagine how difficult it is to make those small parts with a camera always getting in your way !

[@mikestabile0526]

Really enjoyed the long format video & def want a video about iso tolerances!

[@priority2]

Wow! How the heck do you bid a job like this? Incredible precision and just beautiful craftsmanship. Thanks for sharing 😊👍

[@StefanGotteswinter]

Guess the hours, add the tooling required, add 25% and hope for the best :D

[@TrPrecisionMachining]

very good video..thanks for your time

[@granander]

Obviously a man who loves his craft! Thank you for sharing!

[@Just1GuyMetalworks]

Wow, nice work! Love your custom ground tooling. Was the first thing I noticed 😊. Lots going on in this video, thanks!

[@MJ-nb1qn]

I also find being smacked up side the head with steel parts “reasonably annoying”! Great quote. Mind if I use it?

[@shawnhuk]

Incredibly informative, Stefan. Thank you. I have been struggling with cheap insert tooling lately. Soft carbides. I had thrown together a cheap diamond lap with a Chinese 2000 grit diamond lap. It does a nice job lapping the dull inserts sharp again, but they dull very quickly... but, I have this stack of used carbide endmills piling up. I keep them with this zany idea that I’ll have them resharpened... I assure that’s not happening... I think it’s time to take your advise and make some new carbide tooling and holders!

[@StefanGotteswinter]

Chinese inserts a a hit and miss - The ground ones for aluminium work usually quite well, with inserts for steel, I never had luck, they are probably made out of compressed street-dirt or something like that. When trying to put a edge on them, they just crumble apart. Endmills are usually a very good grade carbide, fine grain and tough.

[@shawnhuk]

@@StefanGotteswinter - compressed street dirt.... !!

[@Amaysing79]

Thank you for your videos. They are great I look forward to each one no matter how long are short.

[@TheScaryName]

Dude! The amount of work you put into these parts, I hope you charge them accordingly!

[@themonkeymoo]

'Sup, dawg; I heard you like collets. Seriously, though; sticking a custom collet inside the standard collet is a great idea for holding tiny parts like that.

[@HairyNumbNuts]

I like the way you are using "microns" rather tenths or hundredths of a millimetre. Others will disagree but I find it more intuitive.

[@StefanGotteswinter]

Thats the general feedback I get, I will go for that in future :)

[@thomasrappen5906]

knew a machinst, his nickname was 'µ'...

[@CatNolara]

Very nice work, I always like the small and complex precision parts, because you need to use all your skills to get it done, sometimes even coming up with new ideas. Wonder what this will be for, propably some fluid is going to go through there. Edit: commented too fast again. That's some really interesting stuff your customer is doing there.

[@kimworthington25]

Your an inspiration Stefan. I notice a new vice in the shop. Looks very similar to my latest addition, which for a distinct hobbyist like myself, is a significant step up from the Vertex I was using previously. In the future I hope to see some new material from you regarding the Gerardi and what you plan to do to improve its functionality.

[@StefanGotteswinter]

Thanks! Yes I will do a video on the Gerardi - I am already filming here and there short segments on it.

[@DubsnSubsSessions]

If I take anything away from this video, it's without a doubt the perfectly used Bob Ross quote.

[@henpemaz]

Those boring bars in the video give you an idea of just how big Stefan and his shop are 😱

[@StefanGotteswinter]

The shop is quite small - I am quite tall, haha :D

[@adrianu5481]

Immensely enjoyable Stefan, as always. I did a lot of small detail work and it was always my favourite area. It would have been nice to have had some of the tooling you showed.

[@youcoulduseit7492]

Love the round tool bits, Just drill a square block with the bit size, set screw, find the center of your grinding wheel hight use the table in machinery's handbook.To set the rest hight of your fixture and get the relief angle you want. just use a protractor to sharpie a mark on the rest or clamp a fence just feed straight in against the fence. you can rotate the block and grind another facet of your cutter. usually by reclamping the fence to a new angle but leaving the set screw on the block tight looking at the catalogs of ghuring and ifanger i learned a lot good to see you stefan

[@Guzziv7Sport]

Thanks for taking the time to produce and explain the process. Great video work with closeups. Work is on the other size end from Abom79 🙂 Can you tell about the magnifier you are using ? Looks very useful. My eyes are getting old Thanks

[@StefanGotteswinter]

Most of the time, I use my dads old 8x magnifier that he used when he worked in QC. I dont know about the manufacturer, but its very nice, with a metal housing. Also nice are the small magnifiers from PEAK. Maybe easier to get is this one: www.optics-pro.com/watchmaker-s-loupe/schweizer-magnifying-glass-tech-line-10x-watchmaker-s-loupe/p,23346 Also very nice optics, real glas, no plastic lens.

[@tmurray1972]

Excellent video with the best commentary on youtube.👌👍👏👏👊🏼

[@DerLaCroix1]

It's always nice how you put things into perspective... Here I am, struggling with some tricky cuts while drywalling, and meanwhile, Stefan is making some ant jacuzzis...

[@ianpendlebury3704]

Wonderful video - fascinating and instructive. I hope the 'reference snail' in the photo at the end is ISO compliant.

[@StefanGotteswinter]

Thats definetly a metric ISO9001 compliant snail.

[@theflyingfool]

Goodness me! That must have been a *huge* snail! Thanks for a very interesting insight into the world of micro-machining!

[@keithwoolly]

I’m a big fan of your videos, and learn a lot from them. I’m a watchmaker working on very old pocket watches and use mainly a schaublin 70 and aciera f1. You mention in this video machining the shank of your new boing bar. I have a mt1 wolthaupter similar to yours that I want to change to 10 mm. I would like to see how you would do this using only your lathe/mill/dbit grinder (as these are the tools I have!) Best regards

[@FesixGermany]

I like how you say "wörk". A lesson about tolerances would be nice.

[@howder1951]

Wow, micro machining for an hour, fascinating stuff Stefan, and amazing precision techniques, cheers!

[@curtisvonepp4335]

Stefan nice to see your technical work comparing my work on a 72" boring Mill it's like night and day difference .😨

[@ColtaineCrows]

I've forgotten almost everything I knew about ISO tolerances, so a refresher would be nice.

[@mrkucz]

I didnt mind the length of video, rather enjoy, plus quit a few technique's i could use on some of my projects. Thanx 4 sharing.......

[@navaho5430]

Nice work, use a strong magnet to pick up small cut offs cheers.

[@StefanGotteswinter]

Unfortunately 303 stainless is not magnetic :)

[@janeinarwold2663]

You should do the Oxtools toothpick challenge with a bored hole and threads inside!

[@glennstasse5698]

jan einar wold and a knurled finger grip!

[@Proverbhouse]

First I want to thank you for all of the great examples of small part machining. I do have 1 question. On the 2nd part why did you drill after you had turned OD. I expected drilling to be one of the earliest operations on the part. I have very little experience machining. I am a hobbyist with only a couple of active years, so please forgive me if the answer is self evident. To me it is not. I am always looking to learn something new and watching your videos never disappoints. At risk of answering my own question, is the wall thickness so thin that the low lateral load of drilling better than the high lateral load of turning ? Thank you again and God's blessing to you.

[@xenonram]

You took a good risk.

[@emilgabor88]

Funny stuff when you say rough all the chunk of material , but it is 6mm 😅 And I think that I have bought this week 3tone of tool steel just for having in house ... (from 65 to 200mm) Dose the tumbler not remove some material on the hi precision surface ? Grate job like always 👍

[@StefanGotteswinter]

The tumbling media mostly works on edges and corners, on flat surfaces it barely does anything other than altering the finish. Maybe if you leave parts in for days, it would noticeable change dimension, but before that, all edges and corners would already be rounded over like crazy :D

[@nowar9220]

I thought his "wife" was helping hold the part 😂😂 It was his "vice"!!!😂😂😂 Love this channel!!

[@fefifofob]

My guess would be that the price of the flux capacitors is about gram for gram equivalent with diamond.

[@scotty362100]

Me.......YES i finally got it within 2 thou. Stefan......damn only another 1/2 micron to go!

[@erikisberg3886]

Very interesting video, lots of useful info, not to long! Used to work with dental implants etc. and was sure it was something related until the truth was revealed... The triangular P horn grooving tool You shoved is very similar to the Dormer SKF K308 tool I use. Dont know if the 23mm inserts are exactly the same. Your holder design is rather similar to the original SKF holder I have except that the blade is held by an excenter (instead of the screw) that presses the blade down against the support. You could perhaps easily modify Your holder to be a little more rigid that if required. I also wonder about the plastic tumbling media? Not seen that type before.

[@mirvessen]

Very impressive work. Well done 👍

[@mpetersen6]

Very nice. Flux Capacitor parts? Must be for the regulation of the flow of the Pastatrons and the Futuratrons

[@tinker5349]

Hi Stefan, ejoyed watching your very intersting video, thanks for sharing.

[@RaminCreate]

absolutely beautiful work

[@TheScaryName]

"Reasonably accurate" he says, working within 0,00 margins... I love you.

[@garyc5483]

Excellent video once again Stefan. I really enjoy these tight tolerance parts video's. Thanks for sharing. regards from the UK

[@nikond90ful1]

Thanks for the video.

[@HeimoVN]

Truely impressive work...

[@radardoug]

Wow! I watch you doing this incredible fine work and then I watch a video of Adam Booth turning some massive shaft and I grind my mental gears.

[@eliduttman315]

Just appreciate the FABULOUS skills of both men. 1st rate craftsmanship will never be out of fashion among people with any sort of sense. If circumstances brought Adam and Stefan together on some project, count on an absolutely excellent end product.

[@camperlab6546]

I think you mean 'a.k.a.' an old carbide endmill, not 'i.e' an old carbide endmill. The one and only chance in my lifetime to correct Stefan.

[@bradley3549]

'I.e.' means, 'In other words'. The meaning between 'i.e' and 'aka' is pretty similar.

[@capnthepeafarmer]

Stefan, have you ever considered using a microscope camera and screen over the lathe to see the part more clearly? I feel that even being as close as your camera just isn't enough. My eyes are going crossed. :)

[@StefanGotteswinter]

I played around with something like that, wasnt to happy with it. I prefer to work with a handheld magnifier. Nothing beats real optics, without a digital image processor in between the part and my eyeball. Most happens on the DRO anyway.

[@hamedhashemi7951]

Stefan, number 1 machinist!

[@gbowne1]

Stefan: "You guys want to see a small boring bar?" Pulls out a needle.

[@StefanGotteswinter]

Great way to start a conversation at a party.

[@gbowne1]

@@StefanGotteswinter then spend all day hoping the needle won't break off in the bore. lol

[@felixar90]

Cue Old Tony bringing a pool noodle into the shot. "One human hair"

[@MT75Turbo]

Those small caps at 48:24 looks just like valve clearance caps for an Old Alfa Romeo engine :D

[@stanstevens3783]

Hi Stefan, another fine video. Can you tell us whether the setups in the tilted collet chuck have to be indicated in for each part, or is it able to be batch processed like in a fixture?

[@StefanGotteswinter]

I needed to indicate the flat on each part, in hindsight I could have made the fixture with the orientation-flat earlier and used it instead the collet block.

[@stevecanny1583]

Beautiful job Stefan! :)

[@jeffreyhill1011]

I don't know what them macaronis are you keep cutting but seems like ten isn't very big! Nice work as usual cool process and a really neat part. EDIT: Gotta love a suction fit