Shoot'n The Poop #1 - End Mill Grinding Fixture

[@tonythomas951]

I've been an electrician for thirty years and just getting into machining as a hobby. I thought electricity was complicated but this machining stuff is much more complicated. Brain overload.

[@pauldolan1493]

Tony Thomas Me too with being an electrician. Up until watching these videos, I thought I was pretty capable of tackling projects with a great cross section of life/work history The depth of the rabbit hole machining is overwhelming. I’d buy a new bit.

[@mikefasan325]

Tony Thomas cheers! If you need help I’m here

[@adamturner8422]

Opposite way for me. 11 years as a manual/CNC machinist and now an electrical technician and tbh while at work I feel like I'm just winging it

[@thelamb288]

I have worked for large companies and they used to collect all worn or damaged cutting tools and send them out for re-sharpening! You are NOT a cheap skate. Enjoy your videos much more than a lot of other channels. Cheers.

[@samrodian919]

The Lamb, No he's a tightwad lol

[@lifuranph.d.6607]

Yes, but then there’s no nominal size end mills after a total regrind. e.g. 1/4'' = . 2486'', 3/8'' = .3734'', etc.

[@mirek4357]

@@lifuranph.d.6607 They can be regrinded to specified diameter tho, I worked on Walter cnc grinders and most of the time the customers didnt care about the end dimensions so we usually took 0.2mm or 0.3mm from the diameter and from the face we took depending on damage of the mills So for regrinding I would rather send it to some company since it was really cheap to regrind couple of mills

[@chloehennessey6813]

I just like to listen to you talk, Tony. I wish my shop teacher spoke and used humor like you do while explaining. I’d listen more in class. I’ll be a junior in high school this coming school year.

[@pigtailsboy]

Introduce your shop teacher to the various KZbin production houses dealing in shop work then. If they can't adopt some of the techniques in class they can at least pass along these contacts as guides for their students.

[@KennyRusso77]

I know this is an old video, but I'm trying to catch up on all the "old" subjects as I work my way through your library. And this one brought up a lot of memories of my days as an apprentice tool and due maker. Early in my training I spent a year just sharpening cutters. I learned to sharpen cutters of every shape and size, and we had all the equipment needed to sharpen them properly! Back then (mid 1980's) the injection mold industry in Grand Rapids, Michigan was just then getting into inserted fly cutters (carbide and ceramic) and things of that type, but all that new stuff was extremely expensive, so almost everything was still cut using fluted HHS and carbide cutters, which needed to be regularly sharpened. Your video bright back A LOT of memories of that for me (...and I'd just gotten over my PTSD, too)!!!

[@klazzera]

thank you so much for mentioning that grinding carbide can be toxic. didn't know at all

[@David_Best]

After watching this two times, I've decided not to invest in this jig and instead send my end mills to you for sharpening. Thanks for assuring me that this is not how I want to spend time. But great video.

[@ThisOldTony]

ha! That's one of the best and most diplomatic comments I've read in a long time. Thanks for watching Best!

[@mikes2381]

Best Services There must be some poor bugger you can just send your end mills through the interwebs to fly around awhile and return to you refreshed and ready to cut through the crap that is their 9-5 job. And that person probably just watched this video and said I do this by hand all day at a bench grinder.

[@honey3431]

Mike Stromecki Perfect. ..lol😂

[@leerogers6423]

@@ThisOldTony I watched the beginning but had to go out and buy a new end mill. Did I miss something?

[@miguelcastaneda7236]

check old popular mechanics mid 1940s how to make your own cutters ..

[@davidgrover5996]

Ahh I bought the fixture now I need to buy the surface grinder. Thanks for clearing that up for me Tony.

[@mikewelch8379]

This was both educational and entertaining. I have seen these fixtures many times but had no idea how they work. Thanks!

[@edupuertasfruns]

Grinding those shapes is so complicated, I don't have the tools but manually I always struggle with the bits and simple flutes. Thanks for your videos!

[@alainvaudou]

Hi ! your videos are awesome Tony. I'm a machinist myself but i did that for only about a year. I'm a small engine technician for about 10 years now and i kind of miss using a late and a milling machine. I remember a lot because of your videos. You are a very talented machinist ! keep doing this. you rock and you are so funny ! best combo.

[@r.j.sworkshop7883]

I have been going back through your older videos and I have to say that I like the theory, or tips and tricks as you call it. I know that there are many good channels out there, but it is good to hear different peoples views and experiences. Thanks for the videos.

[@ThisOldTony]

Thanks RJ.. I had similar rationale.

[@stephboeker7835]

Just heard about your channel while watching EagleCoachShop (Dave). I like to leave comments, as you may learn, especially when asked. I love this type of video. I am not a metal worker but a wood worker. I use bits and jigs, power tools, grinders, lathes and am interested in many of the types of things you document on your channel, albeit for wood :) I've only seen a hand full of your video's but am enjoying them tremendously. Thanks for sharing , sincerely .............................

[@Gottenhimfella]

Diamond (or CBN) wheels will load up much more quickly if used dry, which they're not intended for. Such wheels should ideally be trued as soon as the motor current indicates the wheel is loading up. If this is done, the wheel will last a lot longer than if you wait until glazing can be seen, because you will only need to give it a lick. After truing, you need to dress the wheel. The resinoid material which bonds the diamond particles needs taking back below the outer profile (the cutting corners) of those particles. This is so they can penetrate the work and deliver a free cutting action. Otherwise the stone will (again) load up much more quickly. Use a dressing stick one grade finer than the wheel's grit size. This will permit the stick's abrasive grains to penetrate into the gaps between the particles on the diamond wheel, and remove the binding material.

[@grahamsurrall7315]

Gottenhimfella a

[@dannydetonator]

Ok

[@professorjim6874]

You can use a soft white aluminum oxide stick for cleaning the wheel.

[@CobetcknnKolowski]

I would just like to take a moment to appreciate the visual gag of the incredibly short pencil at 1:45.

[@williamshepherd8875]

I've spent all day going through the archives. I can say that this is the first video of the modern This Old Tony. This is when he found his style that we've all come to love. Here's to many more years of fantastic content!

[@triggeral]

As always. VERY AWESOME! Thank you for taking us along Tony..

[@StefanGotteswinter]

When I regrind the front cutting edges I dont bother with secondary clearance and gashing - I just grind them with about 2...5° clearance to the center and to the back - They work very well but of course you cant plunge with them anymore. As I have a surface grinder now I might pick up that fixture too, would save me from use the single lip cutter grinder fot that purpose..

[@David_Best]

Say what?

[@MaxRay16]

+Best Services what

[@tobyw9573]

Can you dress a diamond wheel with a regular diamond stone dresser? It could just wear faster... Maybe.

[@dannydetonator]

Can you believe i actually felt the roughness of the dimond-edges of these wheels? My index-skin thinned too... Great presentator who knows how to bang the steel

[@Euronasa]

Super video! Thank you Tony! 😀💪👍There is also a resource/environmental side to this. Resharpening of tools in general is a good thing. Some tools can even last a lifetime if they are well taken care of. I don't like the idea of throwing away dull quality tools containing rare earth metals just because they're dull. I like seing them sharpened😄

[@mcnultyfp]

This rank beginner picks up the tone of the process, amid the flurry of technique, and appreciates the occasional warning. Thanks very much.

[@ThisOldTony]

+Paul Mcnulty My pleasure, thanks for watching Paul.

[@ethanledbetter8312]

Hey This old Tony. I love that ur reshaping ur end mills and getting more life out of them. Im a carbide sharpener and one thing i would recommend when ur sharpening carbide is to make sure it stays cool if it gets to hot itll just break. Ive had them break a few times in my face. Just a tip for you. Enjoy your day :)

[@CreaseysWorkshop]

LOL at the pencil!

[@bailey2829]

+John Creasey hahahah

[@agwhitaker]

Now if you were to take a 4" length of .350" diameter aluminum or Delrin and poke an 'N' drill in one end about .350" deep you could then press that pencil in and get LOTS more life out of it. Turn and dress the other end to a shallow dome for added flashiness.

[@trefforttreffort5650]

John Creasey zen

[@svensk69]

That's one way to do it. Or, if you are of the additive manufacturing persuasion, you can 3d-print a (hideously overengineered) pencil stump holder... :D www.dropbox.com/s/pxo2weew38wosrc/2018-10-05%2016.53.39.jpg?dl=0 +This Old Tony

[@user-zq6pj5jo8j]

It's not the size of the pencil, It's how you use it..lol

[@PeterWMeek]

For those of you trying to read that list of KZbin machinist creators at about 0:13 (to see if you are on it??? I'm not.) Google Chrome has a method for stepping through a KZbin video frame by frame. You pause the video and use the angle bracket keys "" (actually the comma and period since you don't hold down the Shift key). In this case it will disclose that the list has been repeated several times to make the fast scroll last longer. (This may change the playback speed when you resume normal play, but that can be corrected by clicking on the gear at the lower right of the playback window.) And now ... back to actually watching the video.

[@garethbaus5471]

I did not know that.

[@bengineer8]

firefox has that too, think it is a general yt thing

[@erlingweiseth2774]

Great video - interesting topic - funny presentation! Keep 'em coming! ;)

[@ThisOldTony]

+Erling Weiseth Thanks!

[@MitchellBumgarner]

"on the surface grinder" hahahahahahaha I loved this. All of this. Great job!

[@todayintheshopbanksy5904]

Really love your videos, Thanks for taking the time to post them,

[@ThisOldTony]

My pleasure, thanks for watching Mike!

[@doped1able]

WhitwellMike B o

[@timothyprochilo4840]

Chamfers are usually added to gear teeth for lead in such as in a transmission when gears are switching. Great video as usual.

[@r.j.382]

Tony, I do enjoy the detailed technical video as well. Your projects are great, but your detailed approach to explaining topics works very well. Thanks for the video. R.J.

[@ThisOldTony]

+Abc Defg Glad you liked it. Always hard to know what folks might be interested in seeing.

[@gadsden1957]

Hi Tony, how I used to dress diamond wheels was to "wear" them true by grinding a piece of steel, I was sharpening carbide cutting tools in a factory and I would sharpen so many that it would wear a dip in the surface of the wheel so I would take a square piece of steel and grind it until the wheel would wear flat again.

[@intjonmiller]

I have a T&C grinder (actually a universal grinder), and this is one of the things I've been anxious to learn about. Thank you for posting this, and for being so enjoyable!

[@intjonmiller]

Also, if you had a T&C grinder, but no tooling or fixtures, what kind of fixture would you want to buy, on a hobbyist budget?

[@ThisOldTony]

+Jon Miller Ouch, you don't usually see T&C Grinder and Hobbyist Budget in the same sentence, that's a tough one. I'd suggest you pick a few things you know you'd like to grind and see which fixture(s) you'd need to cover as many of your needs as possible. Maybe start with a "universal grinding fixture" (check ebay) .. like a DoAll or clone. Maybe a Spin Indexer, too. You could get both of those (import) at a reasonable price and see how far they get you. Have fun!

[@intjonmiller]

This Old Tony Yeah, it's an unusual situation. Even more so since I don't have my own mill or lathe (my two brothers each got those), but that's what can happen with inheritance. I've had thoughts of selling it to buy something that will get more use, but it's way too cool of a machine to let it go. (Covel #6 if you're curious.) Thanks again!

[@MrClickbang357]

That end mill fixture (jig?) is pretty nice - now you have to get another milling machine!!! Happy shopping!

[@cogentdynamics]

I love your videos, I can relate to your information and enjoy the way you present it. I know a little more about sharpening end-mills and someday I may get a surface grinder. Thank you for what you do!

[@BuildSomthingCool]

Great video. You stole my next video Idea LOL. Keep up the good work.

[@ThisOldTony]

+Metal Tips and Tricks (Dale Derry) ha! Sorry Dale .. i suppose it was bound to happen sooner or later. Occupational hazard. :) I wouldn't let my video stop you though; as you saw it took a strange turn. I bet a standard 2 or 4 flute demo would be great. Plus, always good to see things from different perspectives.

[@andrewlockwood6102]

@@ThisOldTony Ahh, perspectives. As the fly said walking up the mirror ... "that's a different way of looking at it" ...

[@ducewags]

@@andrewlockwood6102 Like a pig eatting bacon. Oh that's why people like me... I came for the show, and watched the comment's as I am re-watching Tony's shows. After 1 year, you got a "like".

[@andrewlockwood6102]

@@ducewags good on ya mate! (from Australia)

[@ronwilken5219]

Like they often say, Tony, timing is everything. Thanks for an entertaining video even if it was made seven years ago. My god, have I got some binge watching to do. Regards from Canada's banana belt. 🤞🇨🇦🍌🥋🕊️🇺🇦🕊️🇺🇲👍

[@thatoldbob7956]

Thanks, I have that gadget but I have no surface grinder, never tried using it but now, at least, I saw how to use it. You'd make an excellent lecturer. If I had your kind of teachers I would not have slept in classes. Bob

[@ifaistostenten5454]

I do mine carbide end mills with hand.. I use grind weel to make the face but all the others "cuts, angles etc" I make them manually. It is easy and very quick. Well, I use this process every day so, it may be easy for me. I am in die-mold businnes and the material I cut is 80% steel and stainless steel. So I can't affort to buy every day 4-5 end mills.

[@Hirudin]

Man, another great vid! I hate buying tools sight-unseen, so I hope you make more like this. Especially if they're all going to be this funny! That pencil was the best.

[@ThisOldTony]

+Hirudin THanks!

[@marcellemay7721]

I have one of those end mill grinding fixtures. I got it in a box of stuff I bought at a yard sale. I had no idea how to use it, so your video was very helpful. I don't think I'd be bothered sharpening small end mills, but I have some 1/2"+ sizes, that I haven't had the heart to throw away.... cheap bastard! Who knows, if I have success with the big ones, I might actually sharpen some smaller ones! Because I'm cheap too.

[@DeerAssassin]

I enjoy your videos a lot. I’ve been sharpening drill bits for years using my jig, sometimes freehand and a magnifier to see.

[@Mimerneos]

I like the reverse capitalization on AvE

[@MrTrekFanDan]

I personally love the more "detailed" hacks , jigs, and improvising how-to videos... Your videos are very entertaining , and make me laugh either way! Thank you for that, and all you do. Yours is one of my top three favorite channels. 🖖😎

[@old_guard2431]

Not in a million years going to do this, but a lot of stuff generalizes. Well done.

[@iguanapete3809]

I saw this last week. I ordered one from Amazon. I LIKE IT! Got a cup wheel and I'm using it on my H/F machine.

[@pjhalchemy]

Enjoyed the format and learned a fair amount about the geometry and techniques. Always appreciate the way you think about things and bring it forward! Nice to start on the most complex of forms...jump in both feet. You must have gotten the Wednesday batch of those wheels. I have a smaller cup that rolls like a gyroscope at the end of its spin cycle. I'm in for anything you do to produce more vids! ~¿@ Thanks Tony! Always fun and a Pleasure! ~PJ

[@ThisOldTony]

+pjsalchemy You realize that that sort of feedback will only result in me making more videos, don't you? :)

[@pjhalchemy]

+This Old Tony Ahhh, Yup! ~¿@

[@marceltimmers1290]

Hi mate. I found it interesting that, while you did not expect it, the wheel and fixture did quite nice. Rooting for the under dog? I don't know. But a fun fact never the less. Shooting the poop. The name reminds me of a patient I had. This person was so very constipated that when it was finally time to have a poop, this patient had no time to pull down the underpants, and sit down. As a result the whole back wall of the shower/toilet was sprayed from the ceiling to the ground. I had never seen something like it. Now that's what I call shooting the poop.

[@BrokenRRT]

As a respiratory therapist I was securing a patients airway during bathing time. I was on the right side of the bed in front of the ventilator and 2 nursed rolled the away from my direction. Suddenly the patient started farting and next thing you know sprayed the entire curtain next to me with 3 massive blast of poo. I just missed the line of fire but it was so explosive it was 5 feet up the curtain and literally moved the curtain. The nurses claim I screamed like a girl as I dove for behind the vent and cart. One of the most memorable code browns I have.

[@marceltimmers1290]

Hi mate. Moments in time, that only health professionals can appreciate, When you tell it to a "moggel" they only think it's gross, and often loose their appetite. Stories like this are most often spoken about during lunch time. I love it, and miss it. Thanks.

[@christopherriley9372]

So no more builds until you get another milling stations I take it. I like the way you present the topic and it allows the viewer a little insight into what you will encounter when performing the task on the particular machine your using. Keep up the good work and hopefully you'll get another mill soon Tony.

[@ThisOldTony]

+Christopher Riley Thanks and thanks for watching!

[@h4z4rd42]

I do envy your patience. Keep up the good work and thank you for your educational and entertaining vids.

[@ThisOldTony]

Thanks hazard!

[@ExStaticBass]

So, the thing is...I liked this kind of video before I saw you do this. It WAS boring in the other places I've seen this sort of thing. Your sense of humor adds exactly what it needs to be entertaining instead of just informative. I definitely would like to see more of these on your channel. Let's "face" it, their easy to do. Well...for the most part at least. As with all things, sometimes we need to "touch and go" at times. You know, not to make any milling puns or anything.

[@AMRosa10]

The pencil gag was hysterical!

[@dougbourdo2589]

Nice presentation. Always interesting to see about tool sharpening, etc.

[@peteip2080]

Enjoyed your video, l think that you have convinced me to buy one of these fixtures. I did unsubscribe for a while because you hadn't posted any thing for a long time, it's great to see you back. I like the format and the humour. Cheers

[@ThisOldTony]

it's good to have you back Pete.. thanks for your time!

[@snoggatog3651]

And just the tip mind you and only for a minute

[@Intellistan]

"See if you can feel that" 😆 your sense of humor is perfect. This is your calling man, I hope youtube lines your pockets.

[@neilsbergstedt]

Just came across your channel and I can't get enough. I love the comedy mixed into the projects. I've pick up a lot of good info already too.

[@ThisOldTony]

Glad to hear that Neil, thanks for watching!

[@alanmyerscough7898]

Marvellous stuff all round sir! An absolute joy to watch. I can safely say that I never expected to, as it were, hear myself saying that in reference to engineering videos. A wry sense of humour you have there old bean, blended well with an informative non brain pretzel making narrative.

[@kenchan5624]

Always Enjoy your videos very much and learning a lot from it.thank you for sharing keep it up.

[@obfuscated3090]

Useful video! I just snagged an old Hammond tool and cutter grinder for cheep but it needs a collet holder. Your video inspired me to get a Phase II (since I have built in angle adjustment already) and adapt it to fit. The style you have would work too. Next thing I want to try is a Spindex to sharpen flutes (I'm cheap so awaiting a few tool auctions before I give up and use Ebay) If you are gonna do more videos I'd like to see your take on that method.

[@ThisOldTony]

+Ob Fuscated Thanks for watching Ob. I've never tried flute sharpening with the Spindex, but interesting idea. I have a 'UniGrind' I've used once or twice.. dig back through the videos you should find a flute sharpening one. In theory I imagine it'd be the same.. you'd just need to fabricate a "finger"/flute tracer to rotate the endmill while you advanced it.

[@ke6bnl]

This is the only video I could find for the use of that tool. My old surface grinder came with one and could not find info on its use thanks. found this by accident the title was of little help, I was not doing a search for poop!

[@ThisOldTony]

+Ed Ginsberg ha! sorry about that.

[@ralphwaters8905]

I liked the way you sharpened the end and then tested it by cutting on the side...

[@joell439]

Great concept for a video series. I hope this is not the last. I don't have a surface guider and I always wondered how those fixtures work. I almost want to go out and buy one before I even get a grinder. Keep drinking the prune juice and I'm sure the next subject you need to extrude will be another one I can't wait to watch.

[@ThisOldTony]

+Joel L Thanks Joel, I'll see what I can do.

[@eformance]

Does your grinder spin in the opposite direction because it's metric? ;-)

[@erg0centric]

eformance made for Australia

[@luminousfractal420]

only every few thousandths

[@jemijona]

Same as when you flush the toilet in Australia. The water spins the other way.

[@user-uk5bx1kz2k]

What I think it's only spindle motor connection issue. Metric grinders, as you call them, also have CW rotations. Maybe it's easier to work with grinder in a tight placement

[@flexiblebirdchannel]

I'm sharpening my drills and endmills using a diamond wheel on the mill (sorry that I do not have a surface grinder) and a rotary table with ER25 collet. Most important to get edges that remove the same amount of material is the angle you turn the mill in the rotary table from flute to flute. For your stevenson fuxture, I would place dents with precision on the outer diameter of the collet bearing and a spring loaded ball in a hole of the fixture that indexes into these dents. So the 180 (2 flute) or 120 (3 flute) degree angle will be reached with precision (you don't need 121 degrees at all). Sadly your stevenson fixture is not for drills, otherwise I would build one.

[@63256325N]

Love the pencil with the cheapskate remark! Not a bad tool overall. Thanks for the video.

[@nickhulme5331]

Doesn't that scraper have a health and safety warning on the handle - "Not for use as a pointer!" ? :-)

[@StefanGotteswinter]

After watching this video again, what kind of magic did you use to cut the carbide endmill? Did you have a proper diamond cutoff wheel?

[@ThisOldTony]

I used a diamond tile saw.. 115mm in an angle grinder. You could probably use a dremel diamond saw if you have one. Just nick the side of the end mill (cut through one flute and a bit into the core). A vise and sharp smack with a hammer will do the rest.

[@StefanGotteswinter]

I am suprised that the tile saw works on carbide, those seem to have very little diamond content - Have to try that :D Thanks!

[@ThisOldTony]

+Stefan Gotteswinter they don't have much but they do the trick. might not cut very many tiles after that though.

[@freebornguitars]

Here's a crazy question... can / could this jig / method work for converting a conventional end mill (4 flute) to a plain pilot (smooth) counterbore? I have a specific recurring task that requires a 10mm end mill with a plain 8mm pilot. Length of the pilot is not critical - 6,8, 10 mm would be fine. Many thanks, and yes, love these nut's 'n' bolts chats.

[@mikkokarna]

Hi Tony. Those kind of fixtures are used in woodworking industry. Check out CNC machines from Homag, Weeke, Morbidelli, SCM, Rover.. Etc.

[@billdoodson4232]

That quick shot of the AR5E Tool & Cutter grinder! 😂😅😅😂😂😅😅

[@RinksRides]

this fixture, and the 50lbs of HSS and carbide I just scored would give me a reason to fire up the WWII surface grinder thats occupied the corner of my garage since 2007.

[@sleefox]

I always appreciate nuts and bolts as I'm trying to learn more about such work

[@glennedward2201]

We have a tool grinder it can sharpen flutes and the ends. I’ve sharpened ends a couple times but we typically break the end mills before they ever see the grinder, :-)

[@modelsport2858]

Thanks for making time to do these. Your offbeat sense of humor cracks me up but I pity your wife. For those who'd appreciate a peek at this guy's favorites list, the one that flashed past us a warp speed in the introduction, here it is; Toms Techniques Clickspring SuburbanTool NYCCNC aVe MachiningMoments Keith Fenner MrPete Outsidescrewball Metal Tips and Tricks Abom79 Oxtool Keith Rucker BasementShopGuy Stefan Gotteswinter Shadow HKW James Kilroy myfordboy

[@mpetersen6]

I've got the 5C version and it works for the occasional need to do an end mill. One thing with diamond wheels on the surface grinder. Normally it is a good idea to indicate the wheel in. Wrap the OD with Scotch Tape and lightly tap the wheel to true it up with an indicator. Do not use the indicator on the diamond. Just don't how I know this. Also High Helix end mills may have less lateral forces but they have much higher end forces trying to pull them out of the collet

[@jasondk5127]

You probably have ground many more end mills since this video was made and maybe figure it out that, that end Mill having sharp points at the end will break off in steel. Typically there is a "land" or small face only maybe .01 to .02 high to remove the sharp corner. Thanks for the great videos!

[@brianCAD48]

Thanks for the video Tony. I was surprised to see your spindle turning the opposite way to any other grinder that I have used or come across (at 14minutes). Pleased to see you make note of this (at 17 mins) and warn of the danger if not allowing the workpiece to deflect away from the wheel when grinding. It's essential that anyone new to grinding takes this onboard.

[@Trigger_32]

I definitely saw a Dalek from Dr. Who in there somewhere

[@tubester4567]

I got a press punch jammed under a grinding wheel once, it went flying across the room like a bullet. The grinding wheel stayed in one piece, there was a divet in the wheel but I dressed it up and it was fine.

[@ThisOldTony]

Ouch!

[@red66chevy]

I anxiously await every video you make tony, Great videos, funny jokes, excellent production quality. keep up the great work

[@KID0437]

to square a diamond wheel for grinding carbide you need either a Norton diamond stone which they come with the wheel when you buy one from Norton that is or molly (not the drug lol) .. nice video btw

[@waynethomas1726]

Pretty slick. I don't have a surface grinder, nor do I need one so it's unlikely I'll end up buying one now but that was slick. I always wondered what those old guys that did "tool sharpening" actually used and I didn't really thing of a diamond impregnated grinding wheel. I may never use what I just learned but it was interesting either way. PS, I watched the "shootin the poop" vids out of order.

[@bikingmnviking3801]

12:32 About the "trying to grind" you'd be surprised what a light dimmer hooked to a dremel can do in terms of control and I bought several of HF's cheap diamond cut off wheels just for jobs like this in my own woodworking tools. In fact the whole thing looks very much like a woodworker's jig one might come up with, but isn't there a small tool to sharpen those endmills? Even I don't mess around with drills and I can sharpen almost anything. I leave my drill sharpening to the drill doctor. The cheapie portable traveller model worked so well for me that I bought the larger industrial one which I think will do bits up to 3/4ths. For a woodworker that's huge in most regards and the forstners, spades and other such bits are easily hand sharpened as long as they don't have a spur. I also have a set of three diamond sharpeners that look like toothbrushes that you might want to purchase. Super handy for touch up work. The diamond impregnated stuff is remarkably tough -- I laughed at your thought of dressing it. I've never heard it done but I understand your intentions. Is carbide really toxic? You were kidding about that, right? If not I'd better get my dust collection system connected to everything. They don't mention that on my DD and it has a diamond wheel and can do carbide bits usually used on concrete block or glass. I wish you had done a 2 flute one because I've got a few of them. Diamond is awesome and I knew it was beyond my reach so about 2+ decades ago when I sent in one of my $50+ orders because they had free shipping (and I paid no state taxes on them, a triple savings in all!) I hand wrote it on their suggestion blanks and it took awhile but they started carrying them, then started discounting them, then I started buying that stuff up like it was gold. The only way I have worn one out was using a inch wide diamond drum sander in my router going at 25,000 RPM. I guess that is a little too much for them but that router had no way to slow it down and it had the required 1/4 inch chuck plus it was the most powerful tool I had that could chuck that up. Treat them nicely and they'll probably last the rest of your life and no you don't need to dress it. Great little show you got going, Tony. Thanks for sharing. Oh, could you recommend anything for us less tooled(no mill, no metal lathe) metalworkers to understand more about the scope of these kinds of tools? I just missed out on getting my Uncle's because it was halfway across the USA otherwise I would have went and picked it up. I now feel a compelling feeling towards mills and lathes but I don't really know why. I make small metal tools. Like a pushrod becomes a gouge, heat treated of course, a few knives, occasionally a garden tool or ice chopper made from a railroad connecting plate... we really need them that tough here in MN and all the HW stores sell are about 14 gauge. They're a joke and I've seen plenty of broken ones so I decided to make one that would not break.

[@ThisOldTony]

Thanks MNViking.. I spent a couple of my formative years in the twin cities. Yes grinding carbide is toxic; careful! Though I suppose it depends just how much you do. Never heard of diamond toothbrushes!

[@outsidescrewball]

Awesome production/discussion/instruction/levity

[@randelljones4002]

That fixture is perfectly capable of regrinds on 2 3. 4 flute end mills all day long. I did them for years

[@professorjim6874]

I just saw this old video and thought I had a good comment for This Old Tony. Then I got to the part where I could see the grinding dust flowing off the wheel... I've never run a surface grinder with that direction of rotation.

[@melgross]

If I have a fair sized carbide endmill that threw it cutting edges on the end (and I’ve got plenty!) I just use it for edge cutting. It’s rare that the flutes get damaged much beyond the end. By the way, when using a high helix cutter, don’t use it on material that’s less than the length between two flutes. A minimum of two flutes length thickness is needed for this, unless the work is very rigidly held close to the area being cut, because the cutters act as screws, and the material will lift if it’s too thin because instead of cutting, the bit tries to screw itself through the work.

[@basarist]

Tony, i learn English with you :) thank you

[@snehmistry8860]

I know he's great, but you might want a better source for English, if you know what I mean

[@duobob]

I like the format, Tony, and your own inimitable style still comes through strong. When does the new mill arrive?

[@ThisOldTony]

+Bob Korves Haven't found one yet!

[@chrisduffy2737]

I once had a job running a CNC lathe at night all by myself. The day guy worked his ass off producing 93 stainless steel parts, taking no breaks nor lunch, sucking up to the boss when he came by (I know this, because he showed my how to run the machine). Best I could do was 84 and since I worked all alone I had no one to glad-hand! What to do? I figured by pushing the feed rate on the single large diameter steel drill used to remove most of the inside metal, I could make parts faster. So I doubled it. It worked, but the drill cutting edges wore out . So I rigged up a drill jig on a nearby surface grinder so I could quickly sharpen that lone drill while the CNC machine was running. Eventually, I increased the feed until I was in the realm of diminishing returns and settled on a happy medium. So for as long as that job ran, both day and night shift ran 93 parts apiece. The day guy pissed in a bottle behind the lathe and brown-bagged it, while I had plenty of time for breaks and could go to the dining area for lunch.

[@pedrowhack-a-mole6786]

I have used fixtures like this to sharpen perfect center cutting, flat bottoming end mills. Try to copy the grind angles of a new end mill. You really need a dish wheel to bring the cutting edges to center. Your secondary relief should be ground last to keep you from grinding the edge too thin, high helix end mills have thin enough cutting edges as it is.

[@1873Winchester]

Pretty old video here but did you ever look into Harold Halls grinder rest? I have come to realize I need to sharpen my own end mills, flutes and all, or I will be in the poor house. It's an interesting design, for everything from drill bits to end mills and spirals too. Gotta build it yourself. Meant for a grinder and various wheels but I don't see why it would not work perfectly well on a surface grinder.

[@MegaScott]

I used to work at a machine shop making aerospace products, jet engine parts...etc. The new hires are almost always assigned to the Tool grinding area (unless it's the bosses son), It's a high turnover type job. If they can endure a few years there, they usually will move on to the production area making million dollar parts.

[@brandonhester237]

I like the dalek you threw in there, nice touch

[@3576alan]

4:51 You probably already know this but, A diamond tipped truing tool for your surface grinder will do the trick. Or buy an N.C. G.wheel truing machine. They're awesome; comes with cameras, preset software and everything. They normal set 2 g.wheels against each other to do the 'truing' instead of a diamond tip and can do any wheel type needed. Great compliment for 6 axis C.N.C. grinders.

[@austinwilbanks5919]

Get some white sticks for grinding that carbide so they don’t glaze up too much. You really need some lube during the carbide grinding process but not for what you’re doing. Match the grit of the wheel to the white stick (240 stick for 240 wheel etc)

[@N.Cognito]

the format is a success. bet you can't wait to put that new vice to work...

[@ThisOldTony]

+Eric Skinner Just as soon as I get all that ear wax off it.

[@219garry]

Most of the shops I worked at had ways to sharpen end mills if you really had to. Normally someone came from a sharpening company once a week and us machinists would all throw stuff at him, I mean give him our dull end mills. The following week we would trade some more broken stuff for the resharpened stuff.

[@stevoreno45]

Thanks a lot Tony! I was looking at those about ten years ago but it's difficult for an amatuer to purchase something like that and then be disappointed when it doesn't work

[@sousamaster06]

Not that this will do any good, but by complete accident, I watched a video today about fixing a hole in a 6 foot tall tractor tire. They used that EXACT grinding wheel on a large handheld grinder to remove some of the rubber around the damaged area. I went from never seeing it before in my life to twice in one day.

[@creamshop]

Tony, your videos a so good that i tried to click more than one time on the thumbs up, please dont stop !!

[@djfaber]

Nice milling machine, it looks just like the one I have in my garage.