How to Sharpen End Mills on a Surface Grinder Part 1
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- เผยแพร่เมื่อ 28 ต.ค. 2016
- How to sharpen end mills on a Surface grinder using a Grinding fixture similar to the one sold by EAGLE ROCK.
Special thanks to THIS OLD TONY for letting me use some of his footage.
This Old Tony • Shoot'n The Poop #1 - ...
Dale, I genuinely value it when you post a video where something went wrong. We often learn more from what went wrong than went went well.
My next video shows a mistake too. :-)
And I bet you haven't even shot it yet! ;-)
I was gonna say, why isn’t he sharpening the face or flutes? If you want to be quick about it you can use a buffing wheel with aggressive compound to smooth out any dings. With practice you will be doing it by hand with a diamond gashing wheel.
That jig can really deliver a good result once you are comfortable with it. I have considerable experience with them and would like to offer a suggestion. When you ground the cutting land area, (the primary relief ) you worked from the outside in, with the working flute towards the rear of the machine. If you rotate the whole jig 180 degrees and cut with the flute closest to you, the rotation of the wheel doesn't push the edge (burr) toward the cutting edge of the cutter. It will result in a better edge. Give it a shot. I enjoy the videos. JP out
Thanks for your comment I will give it a try. :-)
Where can I buy this?
I bought two of these. One with 10 detents so that I could do 5 flutes and one with 24 detents for all the rest. No instructions came with, so trial and error figured it out so it was fast and simple. Flutes cutting edge slightly ahead of 90 degrees on the 2 degree slope to center side of the tool holder. NOW !!!! Instead of putting the tool holder 90 degrees and tight to the fence, use an angle block to butt the trailing side out away from the fence. Angle can very depending on the number of flutes. I generally use 25 degrees on 4 flutes. Drop your wheel so it goes in past the center of the end mill. Take a couple of thousands on each flute while progressively indexing mill. When satisfied with cutting edges tip tool holder up to 30 degrees with the same angle bock in place. Adjust wheel so it cuts into web but does not touch cutting tip or chip hook. You don't get the trough this way but you really don't need it. Sharpening cabide this way does not hold up very well for plunge cutting because the nitrite coating is gone.
I have found the best way to get a nice new sharp edge on my end mills is to grab the phone and call my tool supplier. It's darn tough to beat the edge of a brand new quality end mill.
Enjoyed, thanks!
you have a point but I'm cheap and can throw things away. :-)
+Metal Tips and Tricks (Dale Derry) I am cheaper than you, I don't have a grinding room nor a surface grinder.😄
Although I have a lot of end mills I have no mill, therefore I have no need to sharpen???
Great video on the basics & how to use that jig. Just got my surface grinder wired up, & I'm looking forward to sharpening some end mills. On to your next video.... Thanks!
Dale, thanks for another great video. Looking forward to the next.
thanks
Your a legend Dale, another informative video so thank you for posting. I also love now you tied in with "This old Tony" hes great vids too with a sense of humor
Thanks for your nice comment. This old town is great.
Man, your videos are the wisest and intelligent that i ever seen.
wow! thank you
In high school I learned how to use one of those, and I have to say it's probably one of the most useful tools I've ever made.
Do I use right? :-)
Metal Tips and Tricks Yes, the way you use it is actually the same way I was taught.
Seriously I've been waiting to know how to do this. Thanks bud an keep up the great work!
thanks
I'm glad I'm not the only one that breaks end mills. Good video
Great info Dale! I'm never going to sharpen an end mill!
1st off I love that you show your fails :) can't wait to see the next vid :)
the next one has a mistake too. LOL
If you paint the end with a Sharper or red magic marker it really helps to see your grind.love your videos and your shop,it is as clean as a hospital.
Nice, Dale. I have some end mills the chipped corners that I thought I would try to do one of these days. I've always wondered what you pointed out as the chip breaker was. Thanks for reviewing the steps and explaining the different clearances.
good to here from you. I think you will like my next video. I sharpen the flutes
Boy, I wish I had a surface grinder! nice job.
Thank my friend
Oh man when that mill broke, bummer, especially after all the time and effort put into sharpening it. Nice video really enjoy them.
Dale:
I just restored a Delta Toolmaker Grinder, didn't really have any jobs for it yet, so I bought the mill fixture from Grizzly along with some collets. I first tried cleaning up a 1/2" two flute ss bit, took me quite a while to get it right. I then went to some four flute bit, they were easy, so I know what you meant about the comment on two flute bits. I have a 1/2" carbide bit that needs touching up, but I'll have to buy a diamond wheel for that, for another day.
One thing I don't hear about is cutting the gash, if I have that word right. I suppose a cupped wheel would do it, or perhaps a small tool grinder or dremmel with a cutoff bit.
After cleaning up a 1/2", I did a 3/8", fairly easy. I then went to a 5/32nd four flute, didn't do well, have to do everything under a magnifier, just didn't come out well, think I'll stick with 3/16 and above.
The paper manual was worthless, wish somebody would re-write it, but your video helped me the most, without it I don't think I would have succeeded. Old Tony's helped but your's was the best.
Jim H.
8-/ Flashback to bygone years when I was in MTO course, and also in machine shop at EMS; a dear friend had a liberating response at such moments: "... OOOOPS...." FAR superior to my usual expletive.
LOL
Okay this channel is awesome. I found Tony through AvE then this channel and Fenner through Tony. I -know- knew absolutely nothing about metal lathes, cnc work, mills, or surface grinders except that they existed and the basic functions of each. Actually the surface grinder is completely new to me. I had seen a bit of stuff from tubalcain/mrpete over the years but never really cared. Now I am wanting to go back to school to be come a machinist since welding wasn't worthy (quick explanation: I love welding but doing it as a 5 day a weeks job is not for me). Man TH-cam is weird. You get into the holes and never know where they will spit you out. I can actually trace how I got here over the past 3 years. Suggested video: Rinoa Supergenius E-Bike > Rinoa mentions AvE > AvE shouts out This Old Tony > Tony then clips Kieth's audio for a strange but awesome video> Kieth mentions this channel which I had heard Tony mention once as well. Now I am here leaving this comment. Wild.
Check out Shandon HKW for a lot of grinding content...
You have had quite a ride. welcome to the channel. :-)
***** It sure has been. Who knows where it will lead in 6 months. Thanks
Pierre's Garage
That was interesting and almost made me want a surface grinder but I still don't have room for one if I had it. I hope in the next video you sharpen the side flutes.
Im going to try and shoot it this monday, but you know how that goes.
Next video: welding a broken end mill.
I have been think about it. LOL
You made my day lol
Lol I was wearing earphones and the ending scared the shit out of me Haha
That was very informative. Unfortunately for me, the biggest endmil in my mini-shop is 3mm. For a different take on this problem watch Stefan Gotteswinter and his dedicated tool and cutter grinder, which has more angles than a politician. I'd put in a link if didn't have about 50 videos to watch. You should be watching Stefan's videos anyway.
I like Stefans work he is great.
"More angles than a politician". Love it!
nice Dave
Thanks
LOL that"s a good one Dale .
Thanks
Great info. Would love to be in a shop that would allow me doing so.
:-)
I was a tool and cutter grinder for 13 years , this method maybe ok for someone with loads of time . You are better off with a Clarkson tool and cutter grinding m/c . You can cut off broken teeth , gash and re do the end teeth with minimal time loss , do them in batches then re set the m/c for flute grinding..
Most of us are just hobbyist. I love this tool.
Man, that made me jump. lol
Im glad I could make you jump LOL :-)
+Metal Tips and Tricks (Dale Derry) I actually got tears in my eyes seeing that mill break.
The Monlitny tool for chc. 6000 rpm. Заточка инструмента отлично!
Ooopps!
What type of grinding wheel and grit are you using?
I like the electromagnet you use to hold the tool holder in place, how much is it worth? I am almost afraid to ask, I know they are expensive, but worth the money.
If you plunge cut with that slotting drill (2 fluted end milling cutter) does it work? I have tried to use ones sharpened like that, and the dead spot in the centre produces a nipple in the hole that restricts the depth of the plunge. If you grind it so that one cutting edge is half the diameter, and the other shorter, the problem won't occur. Their primary use is for cutting keyways, so once you sharpen the flutes, it cannot be used again for that purpose. You only sharpen the ends, and if the flutes are damaged on the bottom end, then that end bit is removed, or it will cut a nonstandard width.
I don't know anyone ho has a grinder like that at home, Only a machine shop, just a bench grinder, Yours comes down that should be a lot easyer to sharpen.
I would like to know the size (dia. and width) and type of grinding wheel you are using for this operation. It certainly doesn't appear to be a standard straight white aluminum oxide wheel.
Can you please explain the meaning of markings on the collar ring? It is all 8s and 12s, except for zero.The markings are not evenly spaced. Also the meaning of the ball bearing, why it is in the kit? Also, would be helpful if you had diagrams in your video, it is quite difficult to grasp different angles you are talking about because the video is 2 dimensional. I had difficulty grasping the half moon positioning.
I was wondering. Unless you plunge cut with your endmills a lot I didn't see much advantage in sharpening the end when we actually tend to use the sides of endmills to do most of the cutting. I thought in your tour video you had an actual tool and cutter grinder. Why not use that and do them the right way?
Well, us beginners probably chip the outside corners of the bottom a little more than you and a bunch of sharpening of the end would help that, too. :-)
To answer your question about why I didn't use the Tool cutter grinder. More of my viewers have surface grinder then they do, tool cutter grinders.: -)
bcbloc02 cç
Knew just from the sound that endmill was dull, but you got a video from it so that's always good!
I did skip through the video, so I apologize if you covered this, but what wheel did you use? It sounded like a pretty hard wheel. In my limited experience I find soft wheels GREAT for grinding hard steels.
At about 7:40 there was some comment text that said it was an "Unknown Diamond Wheel."
I use a hard wheel because I need it to hold its shape.
Sometimes it can help to dress your wheel with a very slow traverse (a finer dress) if you need the wheel to hold shape.
I'm guessing you really needed the corners to hold shape to get right into the center of the cutter?
Do you offer personal training?
dale little pucker factor nice video.
LOL
Sir can you pls, expland the meaning of end gash of end mill tool. Thank you sir!
Great video on sharpening the face, but I have to ask, why did you think that kind of cut demonstrated the cutting ability of the face? 🤔
What about the helix though?
Hi, my friend, the tungsten powder could be dangerous to inhale!
Kaplow....!!! Crunch....!!! Reminds me something... lol
You just forgot the bad words.... ;)
LOL
please tell me where I can buy fixture
Ebay....I got mine.
Hello. please tell me if you can buy this tool for sharpening milling cutters?
Alexander go to Aliexpress. Type in:- GTBL 5C End Mill Grinding Fixture . Price is NZ$105 + $7.40 to New Zealand. Convert it to your currency to get some idea of the price. Around 5700 rubles if you are in Russia. Доставляют в Россию.
@@peterrhodes5663 Hello. Tell me where you can see it?
@@user-vp1gu6gg3g on your computer.
www.aliexpress.com/
Type the description that I gave you into the search bar and it will be one of the items on the page.
@10:10 "you have to inch in on this"
I'd rolled on that.... a WHOLE inch to go into that endmil....
So why did you use a diamond wheel on HSS? That could have been done easily with a standard 32A/38A Aluminum Oxide Wheel.
I would say why bother changing the diamond wheel.If your in a hurry and have several damage cutters both HSS and carbide to repair you find out what works and what won't.Since carbide is much harder than HSS you find out you wear out the aluminum oxide wheel trying to grind with it.Diamond grinding wheels work with HSS end mills but I wouldn't use a find grade wheel,it seems to take longer.
Why did you climb cut?
I made a mistake that night. I was in a rush to finish the video and get home to my wife. :-)
A likely excuse. Ha!
Bugga!!
LAUGHT OUT LOUD
Hello friend, I am writing from Guatemala and I would like to know where acquired the basis for edges, I want to buy a where it ?? thank you
you can buy one on Ebay
What is the description for this fixture?
Dale, and others:
I'm currently grinding HSS with the stone that came with my surface grinder, appears to be aluminum oxide, the number is unreadable, so I don't know the grit, hardness, etc. It is 7" dia, 1/2" wide, had a 1.25" hole. I'd like to sharpen carbide endmills, probably up to 1/2". I don't think I want to waste it on carbide. Which diamond wheel would you recommend? Do you have a part number from shars or msc? Would a cup wheel give me the advantage of re-doing the gash? Jim
Watch Alan Pearce he will show you how to do it
Where can I buy this fixture?
Kenny - I shopped around, even amazon had them, but I got an even better price from grizzly industrial. I had to buy some 5c collets too, since my van normal mill uses different collets. I've seen the prices all over the place, why pay more? The part number from grizzly is G9887.
@@emptech thanks a lot.. Really appreciate it.. We should get in touch this my email address kenyeoh888.ky@gmail.com
I need to know more about it.
hay that worked well lol (hood thing it was just a regrind lol just poking fun.
:-)
Por favor subtitular en españpl
Please warm up your spindle before cutting, also good practice to dress the wheel. Informative none the less, start with the basics.
Hi James. You are right about your comments. But I consider this a advance video .
I see that milling cutter, and on that holder is "made in China" you can give me a number of that part, so that I can order it myself in China, thanks
So,l grinding was bad, milling bad. Let's see how a welded end mill cuts.
Do you have a brother named David? I just did some machine work for a guy named David with the same last name. He looked just like you.
I do Have a brother Dave in South western Washington. Is that were you live?
Lol yes sir it is, I made a small stainless fitting for him to make his well pump hand powered. Small world
Кто понимает по русски, где заказать и купить эту приспособы.
Next video: Apologizing to the actual regrinders that have to fix this tool. I get wanting to save money, but this is giving me anxiety lol
Heh, I bet conventional wouldn't have done that. It was looking good till that point though. :-)
:-)
sorry ...but I got about 5 minutes into this and decided, "TIME IS MONEY"..I have everything --including the knowledge-- but, ..!!
Speakers on max. I can't hear what you're saying.
Yikes! Social climbing is one thing then there is climb cutting, made me jump like a horror movie when I was a kid, well at least I did not spill my popcorn.
LOL
Climb cutting will push the work away that is a must to keep the grinding wheel from grabbing the cutter and destroying it also can have unhealthy results
What happened here? 11:09 a total useless endmill.
It's not a jig it's a fixture. A jig guides the cutting tool as in drill jig. This is metal working and you don't throw the word "jig" at everything that comes down the pike. Refer to Carr lane catalog or the Machinery's handbook for the correct terminology.