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Posted by Tom Gardner on April 11, 2006, 10:52 pm
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Imagine a 1" cube of O-1 with a 1/8" slot milled 9/16 deep through the
center of a face. I need to put a 1/16" radius on the two edges on one of
the sides. The last one of these I made took hours with itsy-bitsy
(technical term) files and emery paper. I have a "Round-over" end mill with
a 1/2" radius but I've never seen one that small. Do they exist? I DID
Google and looked at catalogs for all the usual mill suppliers. I could
make it in two parts but that would be a wash, time wise.
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Posted by Robin S. on April 11, 2006, 11:55 pm
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> Imagine a 1" cube of O-1 with a 1/8" slot milled 9/16 deep through the
> center of a face. I need to put a 1/16" radius on the two edges on one of
> the sides. The last one of these I made took hours with itsy-bitsy
> (technical term) files and emery paper. I have a "Round-over" end mill
> with a 1/2" radius but I've never seen one that small. Do they exist? I
> DID Google and looked at catalogs for all the usual mill suppliers. I
> could make it in two parts but that would be a wash, time wise.
How many do you need to make? Do the rads have to be true and without any
sharp edges, or are they only cosmetic? How close to 1/16" do they have to
be?
I'd use a die grinder, then stone, then emery cloth/paper. 5 minutes max.
start to finish (per rad). This is assuming you cannot find an appropriate
radius cutter and/or need a true rad with a good surface finish.
Regards,
Robin
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Posted by John Miller on April 12, 2006, 12:03 am
Please log in for more thread options You could take an old end mill, cut away al but one of the flutes then hand
grind the 1/16 r in the remaining flute aking it a single point cutter. A
little time consuming, but faster than hand work.
--
J Miller
> Imagine a 1" cube of O-1 with a 1/8" slot milled 9/16 deep through the
> center of a face. I need to put a 1/16" radius on the two edges on one of
> the sides. The last one of these I made took hours with itsy-bitsy
> (technical term) files and emery paper. I have a "Round-over" end mill
> with a 1/2" radius but I've never seen one that small. Do they exist? I
> DID Google and looked at catalogs for all the usual mill suppliers. I
> could make it in two parts but that would be a wash, time wise.
>
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Posted by Trevor Jones on April 12, 2006, 8:35 am
Please log in for more thread options Tom Gardner wrote:
>
> Imagine a 1" cube of O-1 with a 1/8" slot milled 9/16 deep through the
> center of a face. I need to put a 1/16" radius on the two edges on one of
> the sides. The last one of these I made took hours with itsy-bitsy
> (technical term) files and emery paper. I have a "Round-over" end mill with
> a 1/2" radius but I've never seen one that small. Do they exist? I DID
> Google and looked at catalogs for all the usual mill suppliers. I could
> make it in two parts but that would be a wash, time wise.
A 1/16 round over end mill should be a stock size. I know for a fact
that we have about six or 7 of them in our cutter bin at work.
You might be best off just phoning a (relatively) local supplier and
asking, but MSC will probably have them.
Lesse....
McMaster Carr item 3067A11 in hss, 2790A71 in cobalt steel. Pg.2249 in
cat #107 So these numbers may or may not be any good.
Cheers
Trevor Jones
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Posted by Tom Gardner on April 12, 2006, 9:37 am
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> Tom Gardner wrote:
>>
>> Imagine a 1" cube of O-1 with a 1/8" slot milled 9/16 deep through the
>> center of a face. I need to put a 1/16" radius on the two edges on one
>> of
>> the sides. The last one of these I made took hours with itsy-bitsy
>> (technical term) files and emery paper. I have a "Round-over" end mill
>> with
>> a 1/2" radius but I've never seen one that small. Do they exist? I DID
>> Google and looked at catalogs for all the usual mill suppliers. I could
>> make it in two parts but that would be a wash, time wise.
>
> A 1/16 round over end mill should be a stock size. I know for a fact
> that we have about six or 7 of them in our cutter bin at work.
>
> You might be best off just phoning a (relatively) local supplier and
> asking, but MSC will probably have them.
>
> Lesse....
> McMaster Carr item 3067A11 in hss, 2790A71 in cobalt steel. Pg.2249 in
> cat #107 So these numbers may or may not be any good.
>
> Cheers
> Trevor Jones
It helps to be looking for something using the right name for it...Duhh.
What catalog do you have? I have 111 and 112 and I found the mill but
nowhere near your page numbers. (How do you like that, I now get a new
catalog from them every year rather than every other year as before...I'm
quite impressed with their service and even their prices lately.)
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> center of a face. I need to put a 1/16" radius on the two edges on one of
> the sides. The last one of these I made took hours with itsy-bitsy
> (technical term) files and emery paper. I have a "Round-over" end mill
> with a 1/2" radius but I've never seen one that small. Do they exist? I
> DID Google and looked at catalogs for all the usual mill suppliers. I
> could make it in two parts but that would be a wash, time wise.