Toolgrinding: ID grooving tool

[@ThisOldTony]

nice work! and great visual at the end!

[@stefanknorr1226]

welcome back !

[@IBWatchinUrVids]

I wonder if Tony pokes his monitor too?

[@MJ-nb1qn]

What higher praise than TOT 👍🏼

[@StefanGotteswinter]

Welcome back my good sir! Thanks!

[@sicksixsicks]

I bet Tony would update Windows on his machine before he filmed it. Get on that Stefan. That aside, thanks to both of you for doing what you do.

[@rootvalue]

Thank you for sharing your work. I know it adds labor to any process, but I appreciate the extra effort you go through for us. 🥳

[@jasonh3109]

Amazing. As. Always. I really love how you break this all down into manageable pieces. Thank you!!!!

[@mumblbeebee6546]

That “X-ray vision” at the end is both clever and beautiful!

[@OakesProject]

What an awesome day. Thanks Stephan. Your content is always very interesting. Unless TOT releases a video on the same day just to compete with you . . . . . . . . . .Fight!!!!!!!

[@godfreypoon5148]

5:19 I make those myself too!

[@graemebrumfitt6668]

Soooo Satisfying Stefan! TFS, GB :)

[@AmateurRedneckWorkshop]

Very interesting thanks for the video.

[@kentjohansson6937]

I make those myself :)

[@FCleff]

Bravo!

[@2dividedby3equals666]

Thanks for the videos Stephan, I always learn a lot! I was wondering, how do you clock the cutting edge? 45º on the back and a pin or do you indicate it? Thanks again, take care!

[@Robebob03]

I would quit my day job and move to Germany if I could be Stefans apprentice.

[@wktodd]

Great stuff Stephan. Spend money on the tools to make tools rather than the tool itself

[@StefanGotteswinter]

Gives you flexibility :)

[@platin2148]

No DRO on this one?

[@StefanGotteswinter]

My next surfacegrinder has a Heidenhain DRO.

[@vincei4252]

This Old Tony and Stefan on the same day? It must be Christmas!

[@Timboykee]

I'm beginning to think these two were separated at birth.

[@Andrew_Fernie]

You just stole my line !!! 😃

[@vincei4252]

@@Andrew_Fernie sorry

[@jimsvideos7201]

Gerolf and Quinn too!

[@ericg7044]

@@jimsvideos7201 And Clough42, and Abom. No Steve Summers video today though, and he usually uploads every Saturday morning. Hope he's alright.

[@felixar90]

"Broken endmils, I make them myself" ah

[@scruffy3121]

Love it 😂

[@bobuk5722]

Make your own broken end mills Stefan? Gave me a smile first thing this morning! Always a pleasure watching your brilliant demonstrations. I very much like your approach to life as well. It is uplifting. Bob.

[@michaelpiotrowicz6100]

The cut-away shot at the end was wonderful, the cut-away was good for clearing the chips too :)

[@donteeple6124]

Stefan, you ROCK !!!! Doesn't matter whether its a project or you just showing your regular normal stuff, you instill pride in precision, and excellence in craftsmanship. Keep it up.

[@CCCfeinman55]

Another short while immersed in complete fascination! I love fine, precision workmanship. My biggest forever unfulfilled dream is to have a machine shop. Why forever? ….well, my time on this globe is somewhat short. So I satisfy my yearning by watching you and several other clever folks on KZbin. Thanks for your contributions to the ever expanding knowledge pool in our little online world.

[@jdmccorful]

Ditto!!!

[@johnsmith-zs9jq]

Who knew you can make your own busted end mills. I'd like to see Tony try that!

[@StefanGotteswinter]

I think I stole that joke from Tony.

[@rameezsheikh7576]

@@StefanGotteswinter i see 😂

[@buildstoys]

The ending was awesome Stefan, you could have definitely "frozen" the rotation with a stroboscope (for example my Strobotac works on objects rotating up to 14,400 RPM).

[@buildstoys]

@zomgthisisawesomelol Yes, most Strobotacs will accept an external trigger. I'd recommend reading the Handbook of High Speed Photography (it's free online).

[@TheUncleRuckus]

No way... This Old Tony, Abom79, The Post Apocalyptic Inventor and Stefan Gotteswinter all uploaded today, how did we get so lucky?! Best Day Ever! 😍👍👍 I like the little brass bar and lapping compound trick, I've never seen that before.

[@artmckay6704]

Thank you, Stefan! We always miss you when you're not sharing a project with us. Love your stuff! Please keep em coming! :)

[@ShevillMathers]

Metal surgery in the workshop. Your precision work on such a small scale, makes the average machinist a ‘blacksmith’, on the scale of things. Don’t get me wrong, I admire all those precision machinists too. This is like me doing neurosurgery on a lab rat. Greetings from Tasmania Australia 🇦🇺.

[@roberttaylor2328]

My first viewing of your channel, very enjoyable. Me: 1959 year K.O. Lee Aberdeen T&C Grinder, brought home for my semi-retirement. Great content, subscribed!

[@user-oy4lk7fd9w]

25:07 that footage is just beautiful, kudos for taking the time to do that.

[@FinnoUgricMachining]

I hope You liked making the video as much as I liked to watch it.

[@StefanGotteswinter]

Thanks! Yep! Making the videos is a nice distraction :-)

[@ianpendlebury9503]

Another fascinating demonstration plus excellent photography. Thanks.

[@JanBinnendijk]

I also make small boring bars and grooving tools, i use a cheap lathe with a diamond wheel..Works a treat.. Broken and Dull endmills are just "rough stock" for making lathe tools..

[@plattrap]

Darken the outside of the cutaway with black sharpen to improve the contrast between the inside an outside. Another nice effect to see with a stroboscope is the change in speed of the spindle when loaded by the cutter.

[@StefanGotteswinter]

Haha, darkening the cutaway section would almost make it look like a comic, good idea.

[@BillyHardcase]

Great video my precision hero..

[@johangroenewald6406]

I make the broken end mills myself………love the humor Stefan

[@Xlaxsauce]

The de-sync does make the cut look more interesting. Reality vs demonstration

[@deemstyle]

The cut-away view at the end was really awesome. Thanks for sharing!

[@kerkkonenahaima7322]

Not a very cheap guy for the viewers, first you made us all buy D-bit grinders and now have to invest for couple of other grinders😂. Some time ago I had to see what happened in a novel shape of a woodcutting circular saw teeth when chopping wood. I used a car ignition timing stroboscope synchronized with the blade. It was the scariest thing ever; the 5000rpm running blade seemed like a fully stand still item that magically took chips from the end of a 2x4". It worked quite fine with video camera too, regardless of the frame rate differences. Thanks for a great video again!

[@StefanGotteswinter]

Funny enough: All those grinders I have are not a replacement for the dbit grinder - I use every one of those machines on a very regular basis :) Good hint on the car ingnition stroboscope light, I will look into that.

[@Caughtitoutdoors]

You sir are awesome!

[@richardbradley961]

THANK YOU STEFAN LOVLEY CAMRA WORK. REGARDS RICHARD.

[@MachiningandMicrowaves]

The strobe effect would be easy enough to implement with a Hall sensor and a configurable delay to drive a powerful LED array light, so long as the rate was far enough from the shutter rate to prevent flickering. It would be even neater to phase-lock it so you could adjust the phase lag and have a sort of manually-adjustable rotation of the image. I can't think of a way to extract the frame rate from a phone camera or my ZV-1 to synchronise the lathe VFD frequency to the camera. Nice effect!

[@TrPrecisionMachining]

very good job stefan

[@StefanGotteswinter]

Thanks!

[@bartharkemametalworks2299]

Nice camera work and I like the reverse cup wheel trick. Havent got my Deckel S1 running but learning for your video's.

[@ryanjordan4435]

Great content impressive vast and knowledge rich.

[@georghofmann1782]

hmm .. a timed Light to show stuff like that .. veeery expansiv 😛😉 not .. use one of those "Zündlichtpistole" (Timinglights for Cars) they cost about 20-30 € .. 12v and something for an impulse, like a Magnet-Switch and you are redy to go.

[@StefanGotteswinter]

I was curious about them - I might try one, thanks!

[@CapeCodCNC]

Wicked cool!

[@michaellinahan7740]

Stefan, like you I make more broken carbide than I care to admit to. Do you remember where you got the resin bonded diamond cut off wheel/ I have been looking for something like that for a while to cut them up. I did like the shot of the tool cutting the internal features, a bit like finding out you have xray vision!

[@StefanGotteswinter]

All my diamond wheels that i buy new these days are from a manufacturer in the Ukraine: pdt.tools/en/ The small wheel used there is from Winter and came with the S1 grinder.

[@hadinossanosam4459]

5:22 Nice This Old Tony quote (it's from ToT's carbide tooling video: kzbin.info/www/bejne/qKSpd4qPpJ2ondk , if anyone is wondering)

[@StefanGotteswinter]

Haha, you took time to find it? Bonuspoints right there.

[@CraigLYoung]

Thanks for sharing 👍

[@nigelsmith7366]

Stephan is Tony's brother from a different mother

[@RagingShrimp67]

5:20 I found a joke!

[@mattmanyam]

Thanks for letting us hang out, Stefan. I was going to comment about your camera shots even before the final strobe shot... You're spoiling us! I appreciate everything you show!

[@HP_rep_mek]

Nice video, great result👍 Maybe manouvring pHorn out of business are you😂

[@StefanGotteswinter]

Haha, thats not happening soon - I have their complete stack of catalogues next to me, its insane ;)

[@Rustinox]

I don't know how you do it, but you always make it look easy to do. The normal things to do. To me this is pure art. Thanks for showing it. BTW, at 1:40 it shows 23°C on your PC. End of October? I suppose it's the result of global warming in Germany...

[@MecMod_Homeshop]

Hi Stefan, you are the best tutor, is a pleasure listen you, I have a question, were did you buy your stock? They sale online? I’m from Italy here is very difficult to find in small quantities special steen or cast iron or tool steel, I’m for hobby a model engendering, I study mechanics like you, but for live I do a completely different profession, so I’m not a company and I can’t have access to industrial material, may you can suggest to me a web site were I can buy the metal stock, thanks for everything, thanks for your videos

[@jeromedumalin9954]

I imagine the use of a boring head in a conventional spindexer should work as well for certain diameters

[@StefanGotteswinter]

Yep, absolutely! Deckel even recommendet that in one of their technical manuals for the S1 grinder.

[@tcarney57]

Your old and faithful D-bit grinder must be feeling rather sad and lonely these days.

[@StefanGotteswinter]

Don't worry, the dbit grinder gets used - without a joke - every day.

Did you switch to Fusion 360?

[@StefanGotteswinter]

Yes

@@StefanGotteswinter May I ask why? Could be an interesting topic for a shop talk video.

[@Majiksmoke]

"I'm using the Deckel S1 tool and cutter grinder to cut off the ends of these broken carbide end mills.....I make those myself" 🤣😂 That line right there hit exceptionally close to home, and for that, I had to subscribe!

[@lynnbryant9866]

Your last comment, "I'll be back." Diet Coke out of both nostrils! You got me! Hilarious. Thank you. I needed that laugh. Cleaning the keyboard, though, not so much. :)

[@bulletproofpepper2]

Thanks for sharing! I have junked a lot of parts and fixtures but I also have made machines with hand tools to make better equipment to make better equipment. I have went from welding grade equipment to medium grade machest quality from making tractor parts. I find your video amazing!!

[@wrstew1272]

As usual, a wonderful instructional video for a necessary tool for a precision job. Why buy when you have the precision tooling to make at home? You are recycling! Reusing! Keeping the planet free from those nasty bits of carbide that would otherwise be buried in landfills! Besides, what would you have to pay for three or four of those puppies in Germany at today’s price for quality pieces?

[@VirtualJMills]

Ditch == Document thoroughly, pack for preservation (corrosion prevention, etc…), and set-aside until another project calls for some of those custom parts.

[@666Tomato666]

Some cameras have a shutter that is selectable on a sub fractional basis (so you can shoot at something like 1/100.123 of a second), may be easier that getting a strobe hooked up to a lathe...

[@reiniertl]

Cutting the cut away was cool, even without stroboscopic effect. I would of putt it earlier in the video because it would certainly keep people watching for longer. Great work there.

[@robertklein9190]

Plumber's pliers made in Burma, is Stefan shopping at Harbor Freight, Wow. I have the feeling that the projects he's working on have something to do with invading your body or mind. Nothing to do on a Saturday, let's spend all day grinding and video a small tool, but of course WE all appreciate the effort 10 fold.

[@simonhopkins3867]

Eccentric work is always fascinating to me. But this is next level.

[@StangspringDK]

Broken carbide endmills, I make them myself…… 🤣🤣🤣🤣🤣

[@vincei4252]

first again ?

[@DubsnSubsSessions]

Another excellent mix of flat humour and metal working magic. Cool cut away at the end, I'm going to try that tomorrow and see if I can get it frozen.

[@Kamis47]

Hey im looking for Stefan video when he recut drill press morse taper, with a reamer to cancel a runout. Anyone knows where to look?

[@reinierwelgemoed8171]

You are by far my favourite You tube machinist. I learn so much from You. Thank You very much for the effort that goes into Your videos.

[@kevinreardon2558]

A subtitle should be "Machinist as Brain Surgeon" when it comes to precision.

[@Orgakoyd]

Very nice! I'm curious if you ceramic lapped the 15 degree clearance surface also?

[@michaelgallagher3644]

I have purchased a d bit grinder made by kirba in1977 can you recommend any books on using this

[@CockatoobirdmanBill]

Stefan the cut-away was was the best of all a strob will freeze the action but I like this, it has more class...Be well and be safe...............

[@TON_KROW]

I’ve always had to make my grooving tools narrower than the groove . And step over to get final width. But then again that’s how I had to do it in inconel 718. And I do it that way on everything out of habit

[@StefanGotteswinter]

Yikes, inconel - Gladly this one needed only to work in 1.4305 (303 stainless). If I had to do wider groves, I would definetly step over - this one was also on the edge of working properly with the small diameter starting bore and the large diameter groove.

[@IdressAlokshe]

thank you

[@hoyospetrola]

We have to see the chip evacuation on a real closed part 😉

[@StefanGotteswinter]

Haha, there is none. :D I ran compressed air trough the back of the spindle, that helped a bit, but the tool still needed to be cleared of the bore ever so often. I have to check with the customer if he is ok, if I show the real part.

[@user-wo7rz3yn4o]

I think you need to come to Alberta to enjoy skiing or camping or the like and I can tour you around as long as you stay at my place and teach me things In my shop.

[@ligius3]

You can set the computer network to 'metered' and you'll not be bothered about pesky windows updates again.And also no random reboots.

[@willi-fg2dh]

i was worried about "eyeballing the 0.8mm" until i saw you use a scale.

[@HanstheTraffer]

More beautiful machinery....Glad its in your hands. Who uses this stuff better?

[@hartmutharwat2657]

echt super Stefan It is exiting to see to do this tooling where you can measure the single features with the groove of your tips,

[@TomChame]

Very very neat, thanks.

[@evesdad8419]

Completely agree, thanks!

[@mcsheesh2052]

Stefan, womit bewegst du die Bildschirmperspektive in CAD Programmen. Mit der Maus ist es bei mir mehr Glück, dass ich in der richtigen Perspektive lande, als wirkliche Kontrolle. Hast du da Peripherie-Empfehlungen?

[@ErikBongers]

"...these broken carbide end mills. I make those myself."

[@bataalexander9703]

Herr Gotteswinter, how do you find zero position of the grooving tool with respect to a turning piece?

[@andrewwolf4430]

Just like Stefan I too make broken carbide end mills. The smaller the end mill the more I break

[@Adventure_Van_Upgrades]

"Welcome back to this old tool grinding shop" 😂😂😂

[@albertmagician8613]

"this is broken endmill, I made these myself" May be an easy job!

[@GuyFawkes911]

Is it possible to make such a tool just on the d-bit-grinder?

[@WarGrade]

An adapted ignition strobe light might work for the final shots

[@SamEEE12]

I am a simple man, I see a Stefan Gotteswinter video; I smash the like button.

[@MegaCountach]

Very helpful Stephan, thanks! Cheers, Doug

[@beatrute2677]

The shop I grew up in use to call those spin fixtures a spider box.

[@waldemarii]

This Old Tony jokes are the best.

[@keithstone7930]

Stefan and Tony back on the same day! I feel faint…..

[@kevinrblodgett]

Fascinating combination of tools. I wonder how much could be done on the d-bit grinder?

[@StefanGotteswinter]

Thinking about it, all could be done, but it would take some serious mind-bending to reach all the clearance angles.

[@stumccabe]

Interesting little job. Thanks Stefan. Hasta la vista, baby!

[@frankward709]

Fantastic work Thanks for a very good video

[@SPRlNK]

I like how you showed it cutting inside of the part at the end of the video. 👍