@Kenny Eaton we are the virus. We are the only ones causing pollution and litter. I see it all the time whether it's those juul pod things or masks and gloves, it's disgusting. And these people don't stop to think that those gloves and masks might be infected and someone will have to deal with them eventually. But it won't be them so they don't care. I'm glad you're not touching them.
Forming and transforming metal with sheer force of will is the next step. And not just that Uri-Geller-Spoon-Bending, but proper mental 5-Axis machining.
My first ever gear , 42 and 1/2 teeth, lol. Yes I hadn't clamped properly. Did it on a Harrison L5 with a Harrison indexing head and overarm , cutter in the lathe chuck , vertical slide with the indexing head on the cross slide. Hope the guy in Ireland I sold it to 15 years ago still has it. Great channel.
Gday Stefan, that’s interesting that the gear cutter still worked on a gear quite a bit small then the cutter I designed for, I’ve been looking at those single hole counter sinks and thank you you answered my worry, I think I’ll go the the cheaper 3 flute counter sink, that’s about all my budget will cover, thank you for sharing another great video, I’m always learning something here, please stay safe, Cheers Matty
20:33 freaky, the cutter looks like it's spinning in the opposite direction of everything else. I guess the diameter of the thing makes it line up in a weird way with the shutter speed/framerate of the camera compared to the rest of the mandrel.
How can I tell that Stefan’s not thrilled with this job? Rare record number of “okay’ish”’s in this video. Still beautiful work. I always love the UA-cam camera captured looking finishes in steel. Shiny, sparkly, colourful, never any scratches or apprentice marks. I wish I had the opportunity to work with steels more often. Most of the parts I see (home shop - small customer parts) are generally oddball stuff. I don’t generally get to hog off material. Sometimes I go back and watch older videos from Adam just to enjoy watching some 4140 fly off at mind bending rates. Good to see you, Stefan. Keep up the bunker videos, and sunshine coffee pictures.
Ok Stefan it is time to come clean and take us on a tour of your Shelf of Shame ! Fantastic video by the way ! I learned a lot about setting up a gear to run true on the pitch diameter and i also enjoyed the parts on slotting and countersink tools . Thanks for the video !
Thank you for using metric. I didn't swear once during this video. No stopping and reaching for a calculator to convert some £%*# stupid random imperial fraction into mm. Surface speeds in m/s, runouts in microns, gears in modules. It's so relaxing to to hear Stefan using those newfangled late 18th century metric units. After watching so many American machining videos, I had forgotten what it was like to simply watch and enjoy, rather than having my thought train run off the rails every few minutes with phrases like: "Now, for a quarter twenty, your standard tap drill is a number seven, which is exactly midpoint between thirteen sixty-fourths and three sixteenths." WTF does that mean?!!! (I haven't made this up by the way. It's from "Adam Savage's Favorite Tools: Woodworking Thread Taps"). And no, please don't try and explain, I'm not interested. Keep living and working in the late 18th Century Stefan!
again very learnfull , and my special "well done" in the beauti of filming it like a cinographer , luv it double ! grts from the netherlands johny geerts
Hi Stefan loved your comment about putting the part on your shelf of shame.I try hard to turn out stuff for myself I get it wrong quite a bit but keep practicing My shelf of shame collapsed under the weight !!! Great videos as always thanks
Nice heads up on the countersinks. I'm using a small milling machine and when using the 3 flute evenly spaced countersinks I get horrible chatter. I have a small 9mm Dormer that always works nicely for some reason. Now when I take a closer look...what do you know... uneven spacing on the flutes 👍👍 Guess I'll buy a larger one of those. Thanks!
At 21:00 I can see the gear profile is wrong on the third cut. I've made mistakes like this many times myself cutting gears. Another way this can happen is if the vibration of the cutter causes the nut on the end of the cutter holder to become loose. Then the cutter starts to drop. In this case it may also start to precess as there is space between the cutter and the holder. I always use a tail stock. Cutting gears if it can go wrong, it will.
Now you get to go back and binge-watch _all_ of Stefan's videos. ;) I did when either Robin Renzetti or Tom Lipton gave Stefan a shout-out. The videos are definitely worth it.
I enjoy your videos very much. Hope to see more since we are isolated in home confinement. You are so precise in you work and do an excellent job in explaining how you achieve your end product.
I've seen a four tooth gear cut. On top of that it was actually made as a cutter to be used in a Fellows Gear Shaper to cut either an internal gear or a spline. On a 30:1 gear bobber the change gear set-ups unual to say the least. Similiar to when you needed to cut a 10mm lead on your Vertex Rotary Table
The shelf of shame...I don't have shelves large enough for what I have to toss out, but it's refreshing to stay honest and take another chance, and for sure yr videos encourage hope.
Again, another great video !! Stefan between you Robin, Lance and Pat. you four are the most exacting machinist on UA-cam ! There's one piece or type of measuring equipment and procedure that has not been talked about.....! And that is "Air Gauging " !! Most of the time, I hear it being used for checking the tolerance of bored holes like gun barrel's ! Do you have any experience with this equipment ?? Thanks !
Thank you! I think I walked past an air gage at my used machinery dealer ;) No, I have no personal experience with them, we do all our ID measuring at work with 3point micrometers, gagepins or the CMM.
Yesterday I made my first EVER gear. As it seems, the problems involved do not disappear even by a long exposure to the trade. Mine had 23 teeth in it and as this was my first, I was extra/super careful and got it right first time. Luckily, my milling machine does not have a quill, it is a Schaublin SV-51 :)
Not too familiar with the runout measurement thing ( never done it but I get its purpose ) but wouldn't it help to angle the gear at like a 45° angle towards the direction the runout needle is pointing as it would give you a wider surface area to measure the runout? I'm pretty sure it would also change the behavior from a down-up-down to an up-down-up one ( or rather down-up-down-up-down ) 🤔
Hello Stefan, what was the purpose of raising the boring bar on the tool holder during the roughing pass? Thank you for all you have taught the wide community.
Bruce Williams because in smaller diameter holes, the material can rub the bottom of the boring bar. If you move it above center, it will give more clearance.
Would it be better to have an arbor for slotting? It just needs a nice table like the mill. Are you worried about wearing out the gears in the mill handle. Creating backlash. Or is it easy to replace these parts as they wear?
No worries on wear/tear on the mill - Doing heavy milling with extended quill is way worse than that bit of linear motion with the load almost in line with the quill.
Close, you can go down to eight teeth at module 1. I am looking for some to make modules 0.85 - 0.9. Ordinarily, I would ask someone in my country, yet I am tired after work, saw you playing with gears, and thought, hey, would you make my gears. You could make them on your CNC. BTW the gears you made are beautiful, excellent work👍 ; weird question, how come you don't use the shaper to do the keyway slots?
Moin Stefan! Vor Monaten habe ich mir auf Anraten aus einen deiner Videos bei Hoffmann diesen unsymmetrischen Senker gekauft. Ich finde den irgendwie nicht so toll. Er hinterlässt bei mir wesentlich mehr Rattermarken als mein Baumarktsenker. Habe ich da ein Montagsmodell mit falscher Zentrierung erwischt? Den von Gühring probiere ich auch Mal aus. Schicken Gruß, Etna.
Seit etewa einem Monat - Den Multifix hab ich genommen, weil ich dafür problemlos Einsätze für bezahlbares Geld kaufen kann, beim Tripan ist das nicht möglich. Ausserdem war mein 111er Tripan eigentlich etwas zu klein - Grade für Drehmeissel mit 16mm Schaft (Einstechstähle und negative Wendeplattenhalter gibts kaum mit kleinerem Schaft), der A Multifix ist da ein guter kompromiss.
Hello stefan! @ 12:01 what is that chart-scale thingy? Looks to be a really good cheat-sheet. I want one! Thank you for all your incredibly good videos! Thanks alot for your time.
Thats a slide rule for surface speeds/feeds/and more - Sold by Hoffmann Group: www.hoffmann-group.com/DE/de/hom/Monozerspanung/HSS-Bohrer/Schnittdatenrechner/p/110965?tId=746 Probably not available in english.
I remember reading that for low tooth count gears there are special corrections applied to the normal involuted curve. ‘k’ factors I think they are called. Presumably there are specialised cutters for doing this, and I guess that applies to hobbling as well. Stay safe. BobUK
hmm, Did i miss a multifix video ? grate video, like always if they spin the gears at low speed probably will work fine, but at 2000 rpm i think that they will make nasty noise becouse the doont mess wright
Nope, not going to make my own, thats the reason why I switched to the Mfix - I wanted to be able to buy holders :D With the tripan that was always a bit complicated.
Hi folks. Look at this! There I am wondering how best to do exactly this and I find Stefan has made a high quality video on it. How does he do it? !! BobUK.
I wish there would be a cnc mill with a feedback wheel. meaning,, that we could "feel" the force the machine is inflicting on the piece from the wheel.
Hello Stefan, I enjoy your how-to videos very much; they are among the very best, in my opinion, on UA-cam regarding Feinmechaniker work. Is the term Feinmechaniker still in use? In Canada we'd use the term Instrument Maker, which is a subset of Tool & Gauge maker. The steel you used to make the pinion gears, was it specified by your client? If not I would recommend a steel known in North America as "1144" or "stressproof". Its mechanical properties are equal to or slightly better than that of 4140 HT&SR (heat treated and stress relieved) while being much, much, easier to machine. Also gives a better surface finish. If you make many gears I'd recommend that you locate a small GAUTHIER hobbing machine. I used to cut gears for models using the home made circular rack type tool and was sick and tired of the indexing, to say nothing of the back and forth feeding on my small, manual milling machine. In the winter issue of Digital Machinist is an article describing the conversion of that 1953 vintage hobbing machine to digital electronic gear box, which makes tooth count selection quick and easy. I purchase this machine, plus a tin can full of hobs, at a very reasonable price some years ago. My son needed a six, or seven, tooth pinion (I forgot the number!) for a project and this worked out very well indeed. Because of the severe undercut with such low tooth count I told my son to use aluminium bronze for that pinion, which is an exceedingly tough metal to machine. Worked very well indeed. I still have a small all manual shop in which I occasionally build stuff that interests me. Greetings from Canada. Wolfgang
11:58 - oooh, where’d you get that slide rule? There ought to be more of those… Hmmm, and suddenly I have the idea to make some, for different things I care about. :)
Thats sold by Hoffmann Group: www.hoffmann-group.com/DE/de/hom/Monozerspanung/HSS-Bohrer/Schnittdatenrechner/p/110965?tId=746 I dont think they make a english version unfortunately.
@@StefanGotteswinter They do have an English version! For me, there's a pair of buttons on the page - DE and EN! Looking at the closeup image, it really is an English version. (Aber auch eine deutsche Version wäre OK für mich. :D) Alas, they seem to only accept business customers... which I suppose I could subvert by just making something up, but that feels weird to me in the moment. I'll ponder it. :)
Hi Stefan, your videos are very educational and valuable! I purchased a Bernardo Profi 550LZ lathe, the chuck runout is 0.03mm. Is that acceptable? What is the runout on your lathe chuck?
Hob cuts True involute form. Your cutter makes composite form, flank is radial. ( rack form has curved tooth form )Will run fine together , ok for change gears. Not so good for high speed or power. For change gears , maybe only 3 cutters needed ?
Hi Stephan. I always enjoy your videos and lean a lot. At about the 35 minute mark, you show us a slotting tool made from a piece of high speed steel silver soldered to a solid carbide shank. I'm wondering why you soldered the high speed steel on and didn't use the carbide of the shank to form the cutting edge?
I have a model helicopter with a 6 tooth (!) pinion on the motor. The tooth shape is funny so it can mesh with the mating gear, one wonders if it would work at all if it weren't for said gear being made of soft nylon.
In my experience, whenever a subsequent machining is necessary on a gear, which teeth are already cut, the proper way of holding it is exactly on the pitch diameter. Since this is impossible, the solution is to prepare a split collet with ID holding the gear with roll pins of equal diameter between the teeth.
Hi there Stefan and thanks for a realy good chanell. I have a Schaublin 102VM but there is a problem, i cant seem to get the chuck off, do you have any advice?
Hallo Stefan, gibt es eigentlich auch youtube-Kanäle wie deinen, Tom Lipton's, Renzo Renetti's oder Abom auch auf deutsch? Habe bisher noch nichts gescheites gefunden. Schon jetzt Danke! Gruß Renvyleman
40 minutes of Stefan making stuff during quarantine? Yes please and thank you very much.
Quaran-what? My dayjob is still operating ;)
@@StefanGotteswinter I've been "non-esemtialed" until further notice. Stay safe out there.
@Kenny Eaton we are the virus. We are the only ones causing pollution and litter. I see it all the time whether it's those juul pod things or masks and gloves, it's disgusting. And these people don't stop to think that those gloves and masks might be infected and someone will have to deal with them eventually. But it won't be them so they don't care. I'm glad you're not touching them.
26:56 - Stefan parting the workpiece with bare hands, effortlessly asserting dominance on the machining part of youtube
I think he saw that at a video from Tony and tried long enough until he managed it without the jump cut's
Forming and transforming metal with sheer force of will is the next step.
And not just that Uri-Geller-Spoon-Bending, but proper mental 5-Axis machining.
@@StefanGotteswinter "Third-Eye 5-Axis" ?? Sounds next-level!
@@mattmanyam Clickspring showed us x-ray vision, but again, Stefan will perfect it
My first ever gear , 42 and 1/2 teeth, lol. Yes I hadn't clamped properly. Did it on a Harrison L5 with a Harrison indexing head and overarm , cutter in the lathe chuck , vertical slide with the indexing head on the cross slide. Hope the guy in Ireland I sold it to 15 years ago still has it. Great channel.
Best US dollar I ever spent. Thanks Stefan.
Thanks!
Always good to hear from you Stefan. Thank you
Take care everybody, be safe.
That speeds and feeds slider
Lol. “The Bunker” 😄
I caught that too. 😄
Servus Stefan! Wie immer hochinteresante Details und ein eleganter Seitenhieb für die Pinolenfreunde unter den Bridgeport-Nutzern :D
Danke Alex! Ja Pinolen sind ja auch eine feine Sache, aber nicht ausgefahren von hier bis zum Nordpol :D
I see a new Stefan video, I watch instantly and smash the like button.
we can always depend on you to provide first class machining content thank you
Thank you for all your time and work spent on videos! Very much appreciated!
Gday Stefan, that’s interesting that the gear cutter still worked on a gear quite a bit small then the cutter I designed for, I’ve been looking at those single hole counter sinks and thank you you answered my worry, I think I’ll go the the cheaper 3 flute counter sink, that’s about all my budget will cover, thank you for sharing another great video, I’m always learning something here, please stay safe, Cheers Matty
We have to talk about your tool changes away from Tripan. Hope you cover that in another Showtalk
Nice work Stefan! I need to try those Guhring tools.
ATB, Robin
Thanks Robin! Definetly give them a try if you can get ahold of them.
20:33 freaky, the cutter looks like it's spinning in the opposite direction of everything else. I guess the diameter of the thing makes it line up in a weird way with the shutter speed/framerate of the camera compared to the rest of the mandrel.
How can I tell that Stefan’s not thrilled with this job? Rare record number of “okay’ish”’s in this video. Still beautiful work. I always love the UA-cam camera captured looking finishes in steel. Shiny, sparkly, colourful, never any scratches or apprentice marks. I wish I had the opportunity to work with steels more often. Most of the parts I see (home shop - small customer parts) are generally oddball stuff. I don’t generally get to hog off material.
Sometimes I go back and watch older videos from Adam just to enjoy watching some 4140 fly off at mind bending rates.
Good to see you, Stefan. Keep up the bunker videos, and sunshine coffee pictures.
Ok Stefan it is time to come clean and take us on a tour of your Shelf of Shame !
Fantastic video by the way ! I learned a lot about setting up a gear to run true on the pitch diameter and i also enjoyed the parts on slotting and countersink tools .
Thanks for the video !
Thank you for using metric. I didn't swear once during this video. No stopping and reaching for a calculator to convert some £%*# stupid random imperial fraction into mm. Surface speeds in m/s, runouts in microns, gears in modules.
It's so relaxing to to hear Stefan using those newfangled late 18th century metric units.
After watching so many American machining videos, I had forgotten what it was like to simply watch and enjoy, rather than having my thought train run off the rails every few minutes with phrases like:
"Now, for a quarter twenty, your standard tap drill is a number seven, which is exactly midpoint between thirteen sixty-fourths and three sixteenths."
WTF does that mean?!!! (I haven't made this up by the way. It's from "Adam Savage's Favorite Tools: Woodworking Thread Taps"). And no, please don't try and explain, I'm not interested.
Keep living and working in the late 18th Century Stefan!
Thank you :-)
Thanks Stefan. Another fine master class.
Parts look Super OK! Nice job!
again very learnfull , and my special "well done" in the beauti of filming it like a cinographer , luv it double !
grts from the netherlands
johny geerts
I loved that 40:1 sabaton shout out! One of my favourite songs of theirs.
Hi Stefan loved your comment about putting the part on your shelf of shame.I try hard to turn out stuff for myself I get it wrong quite a bit but keep practicing My shelf of shame collapsed under the weight !!! Great videos as always thanks
Nice heads up on the countersinks. I'm using a small milling machine and when using the 3 flute evenly spaced countersinks I get horrible chatter. I have a small 9mm Dormer that always works nicely for some reason. Now when I take a closer look...what do you know... uneven spacing on the flutes 👍👍 Guess I'll buy a larger one of those. Thanks!
At 21:00 I can see the gear profile is wrong on the third cut. I've made mistakes like this many times myself cutting gears. Another way this can happen is if the vibration of the cutter causes the nut on the end of the cutter holder to become loose. Then the cutter starts to drop. In this case it may also start to precess as there is space between the cutter and the holder. I always use a tail stock. Cutting gears if it can go wrong, it will.
Thanks for the video Stefan. Keep safe and stay well.
A wonderful video Stefan. I always learn something from all your videos. Thanks from my bunker in Plymouth, England.
Thanks Stefan, enjoying your participation in the home shop blog.
Cheers
Vas is Das?
I mean what home shop blog??
I discovered you recently and then in 2 days a 40 minute video? A wonderful way to greet a new subscriber!!!
Now you get to go back and binge-watch _all_ of Stefan's videos. ;) I did when either Robin Renzetti or Tom Lipton gave Stefan a shout-out. The videos are definitely worth it.
I enjoy your videos very much. Hope to see more since we are isolated in home confinement. You are so precise in you work and do an excellent job in explaining how you achieve your end product.
"welcome back to the bunker" You can't say that Stefan !......it's way too funny !!
Beautifully made , like the fancy new tool post ! Regards from lockdown UK
Slowly getting into all this. You my friend are seriously interesting..
Always educational!!
I am a simple man, I see a Stefan Gotteswinter video; I smash the like button.
You could even set up a venturi on your through-air system to mist coolant as opposed to flood cutting if you were so inclined to.
Great video as always! Thanks for sharing all that knowledge you worked hard for learning.
Most of it was try'n'error ;)
At 10:15, why do you lift the boring bars above its centerline? Nice video you make.
AS ALLWAYS STEFAN,,, THANK YOU FOR EXPLANING SO WELL.......... REGARDS R.. MORE PLEASE.........
Thanks for sharing, great content Stefan, Stay safe in the Bunker!
I've seen a four tooth gear cut. On top of that it was actually made as a cutter to be used in a Fellows Gear Shaper to cut either an internal gear or a spline. On a 30:1 gear bobber the change gear set-ups unual to say the least. Similiar to when you needed to cut a 10mm lead on your Vertex Rotary Table
Excellent machining at its best, great vlog Stefan. Hopefully you can escape Der Bunker????
Thanks for sharing and stay safe all.
Currently I feel quite comfortable in the bunker ;)
The shelf of shame...I don't have shelves large enough for what I have to toss out, but it's refreshing to stay honest and take another chance, and for sure yr videos encourage hope.
Thanks for this information. I learned a lot. Enjoyed the video especially your thoughts on counter syncs.
You and Mr. Crispin should do a collab project. You are both so precise with smaller work.
Stefan great video as always. Your work is exceptional. I believe by now my shelf of shame was a barrel....
Thank You Stefan !!!!!...Such a pleasure watching your mindset...TM
Again, another great video !! Stefan between you Robin, Lance and Pat. you four are the most exacting machinist on UA-cam ! There's one piece or type of measuring equipment and procedure that has not been talked about.....! And that is "Air Gauging " !! Most of the time, I hear it being used for checking the tolerance of bored holes like gun barrel's ! Do you have any experience with this equipment ?? Thanks !
Thank you!
I think I walked past an air gage at my used machinery dealer ;)
No, I have no personal experience with them, we do all our ID measuring at work with 3point micrometers, gagepins or the CMM.
Yesterday I made my first EVER gear. As it seems, the problems involved do not disappear even by a long exposure to the trade. Mine had 23 teeth in it and as this was my first, I was extra/super careful and got it right first time.
Luckily, my milling machine does not have a quill, it is a Schaublin SV-51 :)
Not too familiar with the runout measurement thing ( never done it but I get its purpose ) but wouldn't it help to angle the gear at like a 45° angle towards the direction the runout needle is pointing as it would give you a wider surface area to measure the runout? I'm pretty sure it would also change the behavior from a down-up-down to an up-down-up one ( or rather down-up-down-up-down ) 🤔
I can see you making a tail stock soon. Thanks, great video!
I could be collecting ideas ;)
Stefan Gotteswinter there is an older Hardinge tail stock on eBay right now for 70$. Center height is 100mm. Shipping is probably expensive though.
"stem" pinion gears are available with as few as 6 teeth at least in American pitches on amazon they are pricy.
Great work. I bet those gears would make some noise at high speed :)
Also +1 to quill-less machines :)
Thanks Stefan, another winner.
Hello Stefan, what was the purpose of raising the boring bar on the tool holder during the roughing pass? Thank you for all you have taught the wide community.
Bruce Williams because in smaller diameter holes, the material can rub the bottom of the boring bar. If you move it above center, it will give more clearance.
Great video Stefan ..... I would like to know what was your speed and feed slide rule was ..I would like to get one ....ron t
Thats from Hoffmann Group:
www.hoffmann-group.com/US/en/hus/Mono-machining/HSS-drills/Speeds-and-feeds-calculator/p/110965-DE?tId=929
Hey, nice new indexing tool post and Gerardi vise! What made you change out your skookum rigid tool post?
regards
Video with discussion on that is coming :)
I sense the strong and steady influence of Robin Renzetti here....can’t wait for the video.
Shitty "Cough" bad... Best part of the video right there. :D I have the same problem when I switch from shop mode to customer mode lol
That's what u call "BUNKER" language and useful for social distancing in some cases. Ex: "You smell SHITTY, STEP BACK." 😁👌👍
Would it be better to have an arbor for slotting? It just needs a nice table like the mill. Are you worried about wearing out the gears in the mill handle. Creating backlash. Or is it easy to replace these parts as they wear?
No worries on wear/tear on the mill - Doing heavy milling with extended quill is way worse than that bit of linear motion with the load almost in line with the quill.
Never seen a lathe slide rule that you used
Must have one
You might have to get one from an old Machinist -- the machine tool & cutter suppliers may no longer give them away.
Hi,
Great videos! Thank you for sharing all this knowledge!
Have you go any video or pictures with oil grooves of your milling machine?
Close, you can go down to eight teeth at module 1. I am looking for some to make modules 0.85 - 0.9. Ordinarily, I would ask someone in my country, yet I am tired after work, saw you playing with gears, and thought, hey, would you make my gears. You could make them on your CNC. BTW the gears you made are beautiful, excellent work👍 ; weird question, how come you don't use the shaper to do the keyway slots?
Moin Stefan!
Vor Monaten habe ich mir auf Anraten aus einen deiner Videos bei Hoffmann diesen unsymmetrischen Senker gekauft. Ich finde den irgendwie nicht so toll. Er hinterlässt bei mir wesentlich mehr Rattermarken als mein Baumarktsenker. Habe ich da ein Montagsmodell mit falscher Zentrierung erwischt?
Den von Gühring probiere ich auch Mal aus.
Schicken Gruß,
Etna.
I love that 6 jaw scroll buck chuck. What chuck is that Stefan? Been looking for one like that around that size for some time.
Thats a Zentra 125mm steelbody sixjaw with adjustment.
Schöne Arbeit. Seit wann hast du denn vom Tripan auf Multifix gewechselt und aus welchem Grund wenn ich fragen darf?
Seit etewa einem Monat - Den Multifix hab ich genommen, weil ich dafür problemlos Einsätze für bezahlbares Geld kaufen kann, beim Tripan ist das nicht möglich. Ausserdem war mein 111er Tripan eigentlich etwas zu klein - Grade für Drehmeissel mit 16mm Schaft (Einstechstähle und negative Wendeplattenhalter gibts kaum mit kleinerem Schaft), der A Multifix ist da ein guter kompromiss.
Stefan , Is that a genuine Multifix or a good copy? I f a copy please can you share where you bought it ?
Tony Ray I believe that the create tool brand copies are the best and most common clones available. I think Stefan has a genuine one.
Might it have been an option to double the tooth counts on both gears for a better tooth shape?
Hello stefan! @ 12:01 what is that chart-scale thingy? Looks to be a really good cheat-sheet. I want one! Thank you for all your incredibly good videos! Thanks alot for your time.
Thats a slide rule for surface speeds/feeds/and more - Sold by Hoffmann Group:
www.hoffmann-group.com/DE/de/hom/Monozerspanung/HSS-Bohrer/Schnittdatenrechner/p/110965?tId=746
Probably not available in english.
I remember reading that for low tooth count gears there are special corrections applied to the normal involuted curve. ‘k’ factors I think they are called. Presumably there are specialised cutters for doing this, and I guess that applies to hobbling as well. Stay safe. BobUK
That looks like an enco style Swiss toolholder. What brand is it? In any case they are great.
Thats an AXA made multifix.
hmm, Did i miss a multifix video ?
grate video, like always
if they spin the gears at low speed probably will work fine, but at 2000 rpm i think that they will make nasty noise becouse the doont mess wright
Nope, nothing on the multifix out yet :)
Sehr gut Stefan. When will you make some DIY Multifix holders?
Nope, not going to make my own, thats the reason why I switched to the Mfix - I wanted to be able to buy holders :D
With the tripan that was always a bit complicated.
Hi folks. Look at this! There I am wondering how best to do exactly this and I find Stefan has made a high quality video on it. How does he do it? !! BobUK.
I wish there would be a cnc mill with a feedback wheel. meaning,, that we could "feel" the force the machine is inflicting on the piece from the wheel.
Just noticed the Multifix tool post.. Is that a new addition ? They look soo nice to work with !
Yes, I switched about a month ago to the Multifix - Video with discussion on the why is coming.
@@StefanGotteswinter Awesome! Looking forward to that, I'll keep an eye out for it!
Hello Stefan,
I enjoy your how-to videos very much; they are among the very best, in my opinion, on UA-cam regarding Feinmechaniker work. Is the term Feinmechaniker still in use? In Canada we'd use the term Instrument Maker, which is a subset of Tool & Gauge maker.
The steel you used to make the pinion gears, was it specified by your client? If not I would recommend a steel known in North America as "1144" or "stressproof". Its mechanical properties are equal to or slightly better than that of 4140 HT&SR (heat treated and stress relieved) while being much, much, easier to machine. Also gives a better surface finish.
If you make many gears I'd recommend that you locate a small GAUTHIER hobbing machine. I used to cut gears for models using the home made circular rack type tool and was sick and tired of the indexing, to say nothing of the back and forth feeding on my small, manual milling machine.
In the winter issue of Digital Machinist is an article describing the conversion of that 1953 vintage hobbing machine to digital electronic gear box, which makes tooth count selection quick and easy. I purchase this machine, plus a tin can full of hobs, at a very reasonable price some years ago.
My son needed a six, or seven, tooth pinion (I forgot the number!) for a project and this worked out very well indeed. Because of the severe undercut with such low tooth count I told my son to use aluminium bronze for that pinion, which is an exceedingly tough metal to machine. Worked very well indeed.
I still have a small all manual shop in which I occasionally build stuff that interests me.
Greetings from Canada. Wolfgang
Nice job, Stefan. Nice of you to share the lessons from a failure.
11:58 - oooh, where’d you get that slide rule? There ought to be more of those… Hmmm, and suddenly I have the idea to make some, for different things I care about. :)
Thats sold by Hoffmann Group:
www.hoffmann-group.com/DE/de/hom/Monozerspanung/HSS-Bohrer/Schnittdatenrechner/p/110965?tId=746
I dont think they make a english version unfortunately.
@@StefanGotteswinter They do have an English version! For me, there's a pair of buttons on the page - DE and EN! Looking at the closeup image, it really is an English version. (Aber auch eine deutsche Version wäre OK für mich. :D)
Alas, they seem to only accept business customers... which I suppose I could subvert by just making something up, but that feels weird to me in the moment. I'll ponder it. :)
Will always take a win win win win!
Those are the best ;)
I am usually happy to accept a single win, but then i am a mere human.
Stefan, can you wrote PN of "brilliant" Guhring radial countersink?
Here is a link to the product site:
guehring.com/produkte/spyrotec/
@@StefanGotteswinter Thanks!
Stfan, another headache. keep it up! always a joy to see. AND i have excuse to sip pilsner. lol poppy says HI
Stefan was that 9 tooth gear profile shifted? I have been studying gear design during the lock down.
Wow, information (and entertainment) overload👍👍
My take on this is that stefan found this old tony's video and came to show him how to do it.
Hi Stefan, your videos are very educational and valuable! I purchased a Bernardo Profi 550LZ lathe, the chuck runout is 0.03mm. Is that acceptable? What is the runout on your lathe chuck?
0,03mm directly in a 3 jaw chuck without doing anything to it is perfectly fine.
The sixjaw is a bit of a cheat, as the runout is adjustable ;-)
Thanking you Stephan.
I needed an isolation dose!
😊new stefan videos always make my day
Great video thanks wish you the best.
Hi Stefan, very interesting video. Thank you for sharing, be safe!
Hob cuts True involute form. Your cutter makes composite form, flank is radial. ( rack form has curved tooth form )Will run fine together , ok for change gears. Not so good for high speed or power. For change gears , maybe only 3 cutters needed ?
Hi Stephan. I always enjoy your videos and lean a lot. At about the 35 minute mark, you show us a slotting tool made from a piece of high speed steel silver soldered to a solid carbide shank. I'm wondering why you soldered the high speed steel on and didn't use the carbide of the shank to form the cutting edge?
I have a model helicopter with a 6 tooth (!) pinion on the motor. The tooth shape is funny so it can mesh with the mating gear, one wonders if it would work at all if it weren't for said gear being made of soft nylon.
Well done as usual!
Are these gears lapped, or it that for the customer?
Me: here are my kids. Stefan: that’s cute, here are my slotting tools 😁
Don't cut sideways with them :D
In my experience, whenever a subsequent machining is necessary on a gear, which teeth are already cut, the proper way of holding it is exactly on the pitch diameter. Since this is impossible, the solution is to prepare a split collet with ID holding the gear with roll pins of equal diameter between the teeth.
Hi there Stefan and thanks for a realy good chanell. I have a Schaublin 102VM but there is a problem, i cant seem to get the chuck off, do you have any advice?
Hallo Stefan, gibt es eigentlich auch youtube-Kanäle wie deinen, Tom Lipton's, Renzo Renetti's oder Abom auch auf deutsch? Habe bisher noch nichts gescheites gefunden. Schon jetzt Danke!
Gruß Renvyleman
Hmm - Herr Dr. Frank Rieg fällt mir da ein:
ua-cam.com/channels/sqnf9U8J4zu1THyuMVtGVQ.html
How do you deburr the gear teeth? Very nice work. Thanks for showing the mistake. Even Robin makes them. of course I don’t 🤥
Outstanding work , thanks 😊👍
Hi Stefan, re the first countersink/deburring tool, how do you sharpen them?
Derek Greenhalgh, very carefully... actually Tom Lipton did a video on the geometry and sharpening of those.