Thread: metric end mill in imperial R8 collet

Originally Posted by 9100

. . .You are not strong enough to tighten an R8 to hold a four flute 3/4" carbide cutter on a heavy cut. . .Bill

Bull. I'm not a very big boy, but I don't have any issues when I pay attention. Maybe your tooling was worn or something, or maybe its different with cnc (I'm all manual). But good collets + good tooling = good results for me.

A dovetail cutter? A DOVETAIL CUTTER! He wants to use a dovetail cutter.

A 6mm, 60 degree dovetail cutter.

So you are cutting a dovetail? Or some other 60 degree feature. I could be wrong and the others here will probably bring up many instances where I have been, but and in my HUMBLE opinion and limited experience with cutting dovetails (yes I have cut them), you do not need an exact sized cutter to cut a dovetail. Each size dovetail cutter will cut a range of dovetails.

But what does your 6mm refer to, the shank or the cutter's maximum diameter? In any case, there is no reason why you need to get a "6mm" one. You could just as easily use a "1/4" one, weather that be the shank size or the cutting diameter. And that should be available from multiple sources.

Originally Posted by dspahn

Yes. But the end mill I'm trying to hold is a 6mm 60 degree dovetail cutter which MSC doesn't even sell. Nor does McMaster. I don't even have the end mill in hand yet (which makes the rectal insertion that much more difficult). The ones I found that fit my budget are import from Ebay. The listing doesn't say what the shank size is. The seller hasn't answered my question. So it might be imperial, but I doubt it. But, with the sleeve idea, no matter what the size is, if I don't have the correct collet, I can make do without having to wait for one to be shipped.

Originally Posted by EPAIII

So you are cutting a dovetail?

Yes.

Originally Posted by EPAIII

Or some other 60 degree feature.

Nothing planned, yet.

Originally Posted by EPAIII

you do not need an exact sized cutter to cut a dovetail. Each size dovetail cutter will cut a range of dovetails.

Yes, but if you need the widest part of the dovetail to be only 6mm, which I do, a 1/4" cutter won't work. (6mm = 0.23622in).

Originally Posted by EPAIII

But what does your 6mm refer to, the shank or the cutter's maximum diameter?

6mm I'm talking about is the maximum diameter of the cutting part of the cutter. I'm creating an application specific holder for a DTI, and the dovetails are 6mm at their widest.
I could have gotten a smaller cutter, but 6mm is already small enough to be more fragile than my skills can probably deal with.

Originally Posted by EPAIII

In any case, there is no reason why you need to get a "6mm" one. You could just as easily use a "1/4" one.

Nope. As explained above.

Originally Posted by dspahn

I'm creating an application specific holder for a DTI, and the dovetails are 6mm at their widest.
I could have gotten a smaller cutter, but 6mm is already small enough to be more fragile than my skills can probably deal with.

43 posts in, you finally tell us what's afoot... and it isn't even ABOUT the shank size .. for a component that isn't even best addressed with an endmill at all?

When the only tool you THINK you have is a hammer the whole nail becomes your world?

No one else in the whole universe ever needed to grasp an ignorant DI/DTI dovetail?

Who told you THAT lie?

Store bought dovetail mounts only exist in a few HUNDRED varieties one can use directly else simply "rob" for their dovetail attach portion. Adjustable or otherwise.

They start at under EIGHT US dollars.

Gof-uck-ing-ogle that.

Ate bux won't even cover the bar tab you've run up f*****g everyone about, will it?

It's yer COMMUNICATION skills as are "fragile", Pilgrim.

Learn from that. Please.

Well, in the face of all that, all I can say is

GO AHEAD AND MAKE THE STUPID SPLIT SLEEVE.

And I, for one, will say no more on this. It has been talked to death.

Originally Posted by dspahn

Yes.


Nothing planned, yet.


Yes, but if you need the widest part of the dovetail to be only 6mm, which I do, a 1/4" cutter won't work. (6mm = 0.23622in).


6mm I'm talking about is the maximum diameter of the cutting part of the cutter. I'm creating an application specific holder for a DTI, and the dovetails are 6mm at their widest.
I could have gotten a smaller cutter, but 6mm is already small enough to be more fragile than my skills can probably deal with.


Nope. As explained above.

OOOOOH goody 44 post and no-ones mentioned it

PM purists wind up time alarm, ............you don't even need a split sleeve, because green loctite retaining compound will keep a sleeve on and end mills shank, ...(as it will a twist drill, countersink and / or bore, a reamer and even a tap (but don't let on you heard that from me or 4X knows what fate will befall me )

Originally Posted by Limy Sami

OOOOOH goody 44 post and no-ones mentioned it

PM purists wind up time alarm, ............you don't even need a split sleeve, because green loctite retaining compound will keep a sleeve on and end mills shank, ...(as it will a twist drill, countersink and / or bore, a reamer and even a tap (but don't let on you heard that from me or 4X knows what fate will befall me )

Limy stirring up trouble again...

Split sleeves can be made. I find them problematic unless it is acceptable to get a job out quick.I am a believer in buying collets and holders. To get jobs out the door I have made them before.

Something to remember is that most all things which are available for sale to buy then buy them as too much time can be burned up making something that may not even run true enough.

If you do not have the option then sure take it on.

Good luck.

Originally Posted by Milland

Limy stirring up trouble again...

Moi? ........how could you?