Indexable parting blade and dbit grinding

[@MattysWorkshop]

Gday Stefan, I always like the way you explain things, very easy to understand and useful information, please keep the videos coming, I need to learn more, thanks for taking the time to do this, much appreciated, take care, Cheers Matty

[@lucwybo]

I had never sharpened a D-bit before and after watching your video, I went into the workshop and managed to make a D-bit after 20 minutes for a 30 ° dovetail on 6mm carbide end mill. Nice video with the correct explanation, Thanks

[@AmateurRedneckWorkshop]

Nice use of the Deckal grinder. A very handy tool.

[@2lefThumbs]

I've got a chinese d-bit grinder and hadn't realised the Zero was adjustible nor that the 90° ring rotated! I hope the manufacturer copied those two features from Deckel, eye-balling "parallel" and mentally adding a slight offset to my positions has been frustrating me. Great tutorial👍👍

[@EmmaRitson]

haha exactly. i knew there was a knob sticking out. didn't have a clue what it did

[@andrewdolinskiatcarpathian]

Now I need to pop into my workshop to see if my version of the Universal Cutter Grinder has that magic knob! 😂

[@alansmith8764]

Not all of the many variants have this feature.

[@andrewdolinskiatcarpathian]

@@alansmith8764 Indeed, as I discovered today, sadly mine doesn’t have this feature!

[@larryschweitzer4904]

I discovered that feature by pure accident. I had taken the machine apart to fix something else. Wish there was a good manual for these machines. The online Deckel one doesn't cover everything.

[@gregsmith2262]

I have been pondering how to do exactly the same thing for months now thank you kind sir for solving that problem.

[@5tr41ghtGuy]

I can see it doesn't take long for the D-bit grinder to pay for itself when it is used to repurpose broken cutters. Nice video, and thanks for sharing!

[@jonsworkshop]

Nicely done Stefan, I definitely need a D bit grinder, very useful. "I need a pointier pointer," comment of the episode. Keep up the great work. Cheers, Jon

[@outsidescrewball]

Great video..discussion/demonstration/build....thanks for your time sharing...atb

[@ehamster]

“Don’t tell me about the import holders, I won’t buy from importers”. Also Stefan “let’s go to the Chinese D-bit grinder”. It’s always best to have flexible standards.

[@StefanGotteswinter]

Missspoke there: I dont buy from that particular importer. I dont have problems with import goods at all.

[@greengohm]

"These are my standards. If you don't like them, I have other" :)

[@EmmaRitson]

@@StefanGotteswinter you're way too diplomatic. I was thinking about this when you said it. figured I knew which importer.

[@2lefThumbs]

@@StefanGotteswinter also diplomatic about the brand of d-bit grinder that you have? 😉

[@sblack48]

He has many import tools, including his lathe until lately.

[@Andrew_Fernie]

Stefan drills a hole👍 . Stefan grinds another D-Bit 🥱. Stefan mills a 1.35mm 15º dovetail to a sliding fit 💥 Now you're talking ! Nice work Sir.

[@molnaromatic]

The sharpnes of the carbide insert is an interesting thing. In this csae the recognisable radius is a sharp (sharp enough) edge because of the momentum of parting occurs in the structure of a material. Therefore if you grind the insert you risk it to arrive the point when more sharpness produces more heat or chiping of an insert.

[@mpetersen6]

Beats having to grind the cutting clearance and back relief by hand. I used to have to make my own counter bores from coredrills and twist drills on occasion with a surface grinder and a Spin DeX. They worked though.

[@kurtg5645]

I love Engelbert Strauss workwear. They have some really really good trousers.

[@tomthumb3085]

Hi Stefan. I’ve never seen the value of that type of quick release tool holder as, by definition, clamping from the bottom will invariably lift the tool slightly, increasing the “stick-out” which is the last thing you want on a parting tool. Great video thanks.

[@sirstan808]

Brilliant and informative as usual. Keep up the great work! Love it.

[@perw12345]

The googly eyes.... Milly McMillface

[@StefanGotteswinter]

Blame my girlfriend 😂🤣

[@geoffreyarchibald2680]

Vibration indicators.

[@jimurrata6785]

Crossover with Grady from Practical Engineering channel. 😀

[@howder1951]

Good video Stefan, lots of curious details for me to consider. You also generated an awful lot of comments, it took almost as long to read them as the video itself. Cheers and my regards!

[@russellhayward2359]

Lovely Saturday afternoon viewing 😁

[@bigwave_dave8468]

I know its a bit of a late comment but I dont understand why the blade holder was built to clamp the blade from the bottom instead of the top. It seems backwards to me given the tool pressure pushing on clamping jaw instead of pressure being distributed along the whole length of the holder's lower edge if it were built inverted from how it is.

[@mrechbreger]

Ich parte üblicherweise mit ner kleinen Drehmaschine und nem NC Programm und nem billigen leicht geschliffenem China Carbide Einsatz (vgl. mit Korloy Einsätzen sind die relativ weich). Per Hand parten hab ich bei meiner Maschine schon lang aufgegeben, viel zu aufwändig und meine Maschine ist nicht stabil genug, auch ist die Motorsteuerung nicht gut genug. Aber ich komme damit genau dort hin wo ich will bzw. mir vorstelle.

[@angelramos-2005]

Great video.Thank you.

[@TheUncleRuckus]

Great video as always thanks for uploading 👍👍

[@BigBoss-rh7zq]

After seeing your original part geometry...i would move to the importer..:)

[@andrewmorton9683]

Wearing non-self-extinguishing trouser material while operating a grinder is a brave move ;)

[@Elektronaut]

32:00 Produktidee: Original gtwr Einkaufswagenchips 😉 Geschliffen und gehärtet natürlich

[@sblack48]

Did you put a dovetail on the clamp itself? Great video.

[@woodwindfixer]

We expect your next video will be on drilling a hole

[@markdavies8037]

I am thinking of buying a small hobby lathe. Does anyone have suggestions please?

[@spartafly3014]

Great video Stefan! But you are a bad man, because of you I ended up buying an EMCO Super 11 instead of an import mill! ;-)

[@Blue_4-2]

🔧😊👍

[@wallfly0131]

What the heck is a millimeter? 🤣

[@StefanGotteswinter]

The SI unit used by the majority of humanity.

[@bobsmith6271]

I don`t know, but my Glock has nine of them....

[@DubsnSubsSessions]

1/1000th of a metre, it's in the name

[@chrisstephens6673]

@@DubsnSubsSessions or a thousand microns😉

[@TomChame]

Half a blonde one.....

[@ROBRENZ]

Excellent video Stefan! Lots of great nuggets in this. ATB, Robin

[@OstapHelDesigns]

Great video! Thank you 😊

[@roippi3985]

I mean I would totally watch your “Stefan drills a hole” series too

[@fredgenius]

I would watch 'Stefan makes toast' lol!

[@ulwur]

The 12-part series. With extended cuts for the partreons !

[@bfx8185]

First part Stefan will grind his own drill bit :)

[@Ale_Lab]

Totally!

[@PeregrineBF]

Applied Science's DIY EDM video is basically "Ben drills a hole in everything conductive he can find". I'd love to see what Stefan would get up to with such a setup.

[@TomMakeHere]

*Token comment for youtube's algorithm 😉

[@iteerrex8166]

The D-bit grinder is such a versatile tool, almost as important as the lathe and the milling machines. Another great video, thanks Stefan.

[@SamEEE12]

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

[@bcbloc02]

Funny you commented I was thinking myself the next one of those blades you get won’t fit that tight precision slot. 😂

[@rprichard8452]

The next blade might be too big... that’s my luck!

[@markdavies8037]

Good morning everyone , my name is mark and im a gotteswinteraholic!!

[@lesthompson5907]

very good . i agree & often cut my larger dovetail's in the same way to making tool holders . making an inexpensive dovetail cuter . using HSS steel . Well-done it can de done by hand solong as you have a flat centre line. i often grind them by hand as i have not a fancy grinding tool like yours . I'm Gallus Ha - ha well - done son . les England a bite rough & redy up to your stranded i know , But you nailed it i liked the subject

[@mftmachining]

Stefan, at 12.10 min is that a Karnasch Mill ?

[@joopm7718]

Nice video I already learned how to make a 1 cutting milling cutter

[@TheRecreationalMachinist]

Thanks for sharing 👍🏻

[@piavigdalsgaard2230]

its a good size Garant... 2.2 .. is usefull ... on the swiss lathes we always used 3.00 E ... IC 328 ISCARS 3.00 0.4 radius and the E ... alot ( they are excelent for turning backside of parts before cut off to sub spindle. I had them go 3500 with .15 in feed sometimes. ( pure oil with rocol RTD into the cut oil ) .. what a smoke bath .... but worked.

[@RRINTHESHOP]

Nice project, should work great. Nice close up of the insert.

[@erikisberg3886]

I rewatched this video, again lots of good advice in here. I have used the same 2mm GTN2 inserts for decades, the type I use are good for aluminum to stainless up to about 40mm. I think they are ISCAR and seem to last forever for my prototype work. I picked up the regrinding insert idea in another video from Stefan, kicked my self for not thinking of that before.... I also bought 2 of the Chinese D-bit grinders 2 years ago, exactly the same, one for myself and one for one of my customers. Mine are C5 since I have all sorts of C5 collets for other machines. I agree the workhead is a bit clumsier but it has not been an issue for me. Perhaps I have been lucky, but mine are tight and hold tolerances well. Only issue was that I had to fix the workhead C5 clamping mechanism which tended to bind, but that was easy. One tip is to buy a 100mm CBN 150 cupwheel for HSS etc, about 30 euros from China. Cuts faster in steel and You dont get all that dust or the comment all the time not to use diamond on steel... which by the way works pretty well with the very inexpensive diamond wheels.

[@adhawk5632]

I just bought a 100mm diamond wheel, 180 grit for the mill. I want to put some edges on some inserts. Ive got a couple of small machine vises and pocket angle blocks and a 12 x 6 mag chuck. Ill wipe dry and cover the mill with a bib of sorts. Vacuum and respirator mandatory. The X axis is 5um dro, is that fine enough down steps? And do you have any other advice that might help. Im all new to this and self taught hobbist, hoping get some small jobs. Were all lucky to have KZbin mentors like yourself, Robin and dozens more machinists. Ive been enjoying and learning from these older vids, Robin's older ones too. So much wisdom that myself and others would never have access to. Thank you👍👌🇦🇺 Congratulations on the upcoming 100K subscribers mark, thats a huge achievement in itself. Lots of filming and editing.💥🥳

[@raymondhorvatin1050]

very clever thanks for sharing

[@googleuser859]

Very informative and entertaining as always, thank you.

[@EngineeringSpareTime]

Nice on! I got a 3mm parting tool from garant. Parting of C45 with it on my Wabeco D6000 is a nightmare. I should try a 2mm blade and the solid tool post helps a lot as well - doesn’ it? When I turned the spindle shaft for my DIY CNC from 42CrMo4 it went well, but like you said parting off is a hole different story..

[@karlmansson8319]

Does anyone know of a good and cheap (contradiction in terms?) source of those grinding wheel mounts? I can only find pieces for 80 euros and above...

[@davidrule1335]

Stefan, do you set that tool above center to compensate for everything flexing? Or how do you set it? On my 1943 South Bend 9-A I set it above center.

[@EmmaRitson]

thanks. I learnt a lot as always. this is pretty topical here. same problems as you have.

[@MrHuntnfish]

I have loved Stefan's classes for years, I wish he would move to New Zealand, its safer, and marry a Kiwi girl, if nothing else just to lift the "Gene Pool". Thank you for taking the time Stefan.

[@danmooney6881]

Hey Stefan. I don't know if you are familiar with Finno Ugric Machining channel, kzbin.info/door/geMbCxcFvL3vhHULxyiXtA, I really enjoy his work. He mentioned you and This Old Tony in the same sentence the other day, and I thought that was a pair to draw to! He's a character, and he does great projects. He's an old guy with a grey beard and a funny accent, but then a lot of us are these days.

[@matttradie1341]

Waste nothing. Stephan, how do you keep the diamond wheel clean? I’ve bought one and have been using it to sharpen TCT teeth, but it appears to be either getting dull or it’s clogged.

[@WinkysWorkshop]

clamping from the bottom is not good.

[@brucewilliams6292]

Excellent work. I have learned so much from watching these past few years. You have made me a much better home machinist. Thank you as always.

[@drevil4454]

Stehan can you please do a video on mill cutters? When to use carbide and on what material and when to use HSS and on what material, etc. etc. Also the amount of flutes vs material types etc, etc.

[@bobengelhardt856]

What's that on the left side of the grinding wheel at 27:36? Ummm? Just how did that happen?

[@joejoejoejoejoejoe4391]

That's not a D bit, a D bit does not have clearance, and is not a milling cutter. a D bit is a boring tool ( predominantly ) used in a lathe, they are sometimes used as a form tool to make injector cones. What you have made is a single point dovetail cutter.

[@tomaszkazmierczak7327]

Stefan, when one world like to buy Chinese clone of this grinder - what one should look at? I found one with 5C collet dos it matter what type of collets it uses?

[@piavigdalsgaard2230]

nice milling. nice grinding. and nice handwerk. 5 stars. Deutsche qualitæt

[@roberthkack9633]

Thank you for this video! I have the same tool holder for my Multifix and now i know what to do with it instead of having it in an drawer put away and not be able to use it. BR Roberth

[@aahl1680]

Most expensive toolholder, Fuckarounditis at it's best.....

[@iiredeye]

Is it just me that doesn't like this design of tool holder? The forces of the cutting tool are loaded onto the clamping screw. ?The clamping screw should be on top, then the forces of the cut are going into the holder and not a single screw

[@ranke]

I just watch your videos for relaxation and always love them! Being more of a wood and stone man I’m always fascinated by the precision you achieve! Thanks for the video!!!

[@drevil4454]

Man that's a nice way repurpose tools!! Hey you even get a ruler on your parting blade😆

[@masterbroadcaster]

"I'll be back..." LOL very nice content! can watch this stuff for hours...

[@canberradogfarts]

Groovey!

[@TomMakeHere]

Damn I can't say 'first' now

[@ehamster]

Doesn’t the red ring on the milling cutter mean that it has the geometry and coating for cast iron (K). You’d want grey (H) for hardened steels. It obviously worked for you though.

[@StefanGotteswinter]

Nope, the colored rings on endmills are mostly manufacturer-specific and are not matching to the colorcoding of carbide-grades.

[@ehamster]

Useful to know, thanks. Every day’s a school day.

[@dan4653]

Just received a similar tool grinder, so it was nice to see a tool grinding video. Thanks!

[@LittleAussieRockets]

Very nice 👍

[@rprichard8452]

Very well done. I enjoyed your time. Thank you

[@leonardocorti1919]

How's the Gerardi vise?

[@StefanGotteswinter]

I like it a lot

[@sblack48]

I’m not familiar with that vise. It looks awesome. So I went to msc direct and priced it. When I regained consciousness.... I noticed a footnote that said “this product contains nickel which in the state of California is known to cause cancer”. So Stephan I think I should take that vise off your hands before something bad happens to you. This community needs you and it doesn’t really need me.

[@leonardocorti1919]

@@sblack48 how nice of you It's incredible that for the state of California almost every substance known to man causes cancer

[@sblack48]

@@leonardocorti1919 I would even pay postage to Montreal. That's just the kinda guy I am! You know at first glance $1000 for a vice seems nutty, but for a company doing precision work it is a no brainer and even for a serious hobbiest, if you can't hold things straight and true you're done. If you do stuff where you have to hold 10ths it's probably your most important tool and you buy it once and really hope you don't run an endmill into it. I see why Stephane has sheet metal covers on it.

[@heikopanzlaff3789]

Have a PEWE AT 2075 Multifix A blade holder. Iscar 26 mm parting blades SGIH direct fit. Works like a charm - 80 bucks...

[@brianmckenzie1739]

Was your Multifix toolholder hardened through out - or just case hardened? At 20:26 re diamond wheel grit size, you say, "the smaller the number, the finer the grit". Isn't it the other way i.e. 600 grit wheel is much finer than your 125 grit wheel?

[@ianjefferson9518]

Sigh. I think I might be another Stefan groupie. Thanks for another great video. I'm painfully aware of how much effort these take so I shall also thank you for your lighter updates on Instagram. I'm curious about your change from from a screw-less vice to a more traditional (to me anyway) screw type vice on your Mill. Why did you switch? I bought my first screwless vice after several of your descriptions of them and I may buy a couple more imports for similar reasons you did e.g. long thing workholding jigs etc. I don't think I will tire soon on any of your grinding topics. I have made several cutting tools out of drill rod over the years and many even work :-) All the finishing was by hand with a stone or offhand on a bench grinder though. Every video on grinding I think I catch something new.

[@tomaszkazmierczak7327]

Have you seen grinding wheels adapters with a balancing mechanism? This is what I have originally in my dbit grinder and I wonder if it makes sense to copy this mechanism when making additional adapters - what do you think?

[@lohikarhu734]

only a Multifix is a Multifix ;-) Howdy Stefan, hope you are doing well? Planning to get my LLPV running again, soon(ish), and try out some threading!

[@fredgenius]

New milling vice? I recently bought one very similar (Tuscan MV-100) - I'd be interested in hearing why you chose yours, and if you're happy with it...

[@TinkerInTheShop]

I still haven't worked out a good method for grinding relief on "free form" D-Bit cutters yet. At the moment I just grind by hand trying my best to follow the contour, works but it's god ugly!

[@michaelpiotrowicz6100]

Did you need to cut a 15 degree angle in the little clamping block? Perhaps not with such a good fit. I would love to have seen you compare the geometry of the steel cutting insert with the aluminium and plastic cutting insert. Thanks as always. M.

[@gregfeneis609]

Stay safe too Stefon. Thanks✌️

[@woodscreekworkshop9939]

Is Tom making you wear his shirt? 😁

[@jeffanderson1653]

You have taken your cutter grinder to new heights. I would love to have one but I just can’t justify the expense for a hobby guy. I always enjoy these videos. I learned today more about those inserts. Thank you for posting.

[@hanswurscht327]

Calibrator is back!

[@orestkoroluk6430]

I believe that the clamping arrangement for the parting blade will work well. Someone thought about the design and upon reflection I can see the logic. The cutting forces at the cutting edge force the tip downwards. The clamping "gib" pulls up on the lower edge of the blade providing fullest support nearest the cut. The top edge of the dovetail will ensure that the blade is held with a stabilizing reaction like a see-saw. It appears to be a three point support system that inherently stable, much like a milking stool. It would be interesting to hear how well this arrangement works for you once you have had a chance to use it for while. You will always have the option of adding some screws to the top edge to change it to a more common configuration.

[@captcarlos]

Thank you again Stephan! Half way through this video I rushed out and bought a 1/2 in coolant hose to make that vacuum clamping/positioning set up. You and Robin have this and that's good enough for me, much better than bailing wire I'm currently using! Any videos on the D Bit or grinding in general will be very appreciated.

[@horkinyorkin]

that looks like a new vise on your mill ?

[@mvadu]

"it will be like making a video for drilling a hole".. Don't underestimate us Stefan, we will gladly watch you describing few unknown engineering considerations for drilling the hole the right way, with smallest tolerance possible..

[@robertburns2415]

As to the negative rake on the front of the insert, it must be remembered what holds the insert into the holder. That is the pressure that pushes against the insert as it cuts. If the tool is below the center line of the part the cut will invariably want to pull the insert out of the tool. The negative rake prevents that from happening.

[@adkinsfabricationandthenso3488]

Too BOOGIE

[@thomasrappen5906]

whooop, and pop it out... thx stefan....

[@artmckay6704]

Thank you for the huge block of extra work that goes into every video! Your efforts are very instructive and very much appreciated! Thanks! :)

[@markdavies8037]

Stefan i am a new viewer to your channel. Im loving the content and am wondering if you are living in germany or the states or wherever? Your vocabulary is excellent. All the best.

[@tmurray1972]

Excellent content.💯 The Arnold Schwarzenegger of machining, and yes you’ll be back.🇩🇪🇺🇸🤩

[@carlhitchon1009]

Stefan, great video as usual. I wonder why the manufacturer didn't put the clamping shoe right at the front of the holder?

[@lrakschmidt2880]

Why did you use this grinder instead of the Deckel? Just want to follow what you are thinking.. great video.

[@wilcojuffer5940]

Hello Stefan, nice shirt you have but also very good video👍👍👍😉