I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the shop.

"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and
with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL

On Tue, 8 May 2012 09:01:03 -0700, "PrecisionmachinisT"
wrote:


"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and
with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL



Wait until you see _Modern Machine Shop_ in June. There's a cutter
grinder in there that dreams are made of. $800,000, but man, oh man.
It will grind logarithmic reliefs on your gear hobs, from both sides
at once d8-)

--
Ed Huntress

"Ed Huntress" wrote in message
...
On Tue, 8 May 2012 09:01:03 -0700, "PrecisionmachinisT"
wrote:


"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and
with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the
shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL



Wait until you see _Modern Machine Shop_ in June. There's a cutter
grinder in there that dreams are made of. $800,000, but man, oh man.
It will grind logarithmic reliefs on your gear hobs, from both sides
at once d8-)


Those kind of machines are a good part of reason why commodity cutting tools
are so cheap when you subtract raw materials cost

We had a couple of 9axis huffmann at the lazy B back in the day; mostly, we
used them for semi-production regrinds of carbide endmills so they were
grossly under-utilized IMO

Anyways, if you get a chance, take a look at some of his other videos--a
exceptionally creative individual whom I'd hire in an instant if he came
knocking.

On Tue, 8 May 2012 09:40:48 -0700, "PrecisionmachinisT"
wrote:


"Ed Huntress" wrote in message
.. .
On Tue, 8 May 2012 09:01:03 -0700, "PrecisionmachinisT"
wrote:


"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and
with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the
shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL



Wait until you see _Modern Machine Shop_ in June. There's a cutter
grinder in there that dreams are made of. $800,000, but man, oh man.
It will grind logarithmic reliefs on your gear hobs, from both sides
at once d8-)


Those kind of machines are a good part of reason why commodity cutting tools
are so cheap when you subtract raw materials cost

We had a couple of 9axis huffmann at the lazy B back in the day; mostly, we
used them for semi-production regrinds of carbide endmills so they were
grossly under-utilized IMO

Anyways, if you get a chance, take a look at some of his other videos--a
exceptionally creative individual whom I'd hire in an instant if he came
knocking.

Ok. Thanks. BTW, the grinder I'm talking about will be in the Amada
Machine Tools booth at IMTS. It's called the DV-7M. Tell them I sent
you.

--
Ed Huntress

"PrecisionmachinisT" fired this
volley in newsdKdnSvKp9mm3jTSnZ2dnUVZ_uCdnZ2d@scnresearch. com:


"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition,
and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the
shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL




Tell me what's wrong with that process.

If I were, I'd start with his using a Bison scroll chuck to "center" the
cutters. chuckle

It's an interesting _use_ of the mill's 4th axis, but I'll bet every one
of those cutters (in that example) cuts on only one flute.


Lloyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message . 3.70...
"PrecisionmachinisT" fired this
volley in newsdKdnSvKp9mm3jTSnZ2dnUVZ_uCdnZ2d@scnresearch. com:


"tnik" wrote in message
...
On 5/5/2012 12:19 PM, Lloyd E. Sponenburgh wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition,
and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Nice! I'd love to get one of those all in one cnc sharpeners for the
shop.

http://www.youtube.com/watch?v=Y3PId...hannel&list=UL




Tell me what's wrong with that process.

If I were, I'd start with his using a Bison scroll chuck to "center" the
cutters. chuckle

It's an interesting _use_ of the mill's 4th axis, but I'll bet every one
of those cutters (in that example) cuts on only one flute.


Personally I would suggest a 5c setup or at least a 3-jaw with freshly re-ground masters but in reality, the larger the cutter diameter, the less important it becomes to be perfectly centered; where you are mostly hogging aluminum for instance with say, a 1in dia cutter at .030 IPT, then 5 thou of runout is basically inconsequential.

Also, you might be surprised at how accurately most new, medium quality, 3 jaws will repeat out-of box up until they finally get whacked a good one.

"PrecisionmachinisT" fired this volley in
news:_MOdnYD1kPHGxDTSnZ2dnUVZ_sSdnZ2d@scnresearch. com:

Also, you might be surprised at how accurately most new, medium
quality, 3 jaws will repeat out-of box up until they finally get
whacked a good one.

I own that exact chuck. TIR ain't all that good.

Lloyd

I think you're enjoying this too much.

On second thought, congrats and carry on.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!


Actually, endmills sharpened on a Darex are nowhere near the quality of
those sharpened on better equipment and also, the machine is woefully
inadequate for reconditioning ends.

Still, MUCH better than nothing...

FWIW : you might want to get a white wheel from Darex ( 80 / 100 grit or
so ) for roughing etc of HSS because although the borazon does produce
better finished work, it is painfully slow where you have any kind of
substantial amount of metal that needs to be removed.

If I was to do it all over, I would probably go with a cuttermaster instead,
or better yet, a weldon air bar and a #2 Cincy or KO Lee

"PrecisionmachinisT" fired this volley
in news:5PSdndv_EPr9EjjSnZ2dnUVZ_gKdnZ2d@scnresearch. com:

FWIW : you might want to get a white wheel from Darex ( 80 / 100 grit or
so ) for roughing etc of HSS because although the borazon does produce
better finished work, it is painfully slow where you have any kind of
substantial amount of metal that needs to be removed.

80-grit white wheel comes with.

Most of my cutters only need "tuning". I seldom chip one, and never let
them get dull to the point of gumming up.

Lloyd

On 2012-05-05, PrecisionmachinisT wrote:

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!


Actually, endmills sharpened on a Darex are nowhere near the quality of
those sharpened on better equipment and also, the machine is woefully
inadequate for reconditioning ends.

Still, MUCH better than nothing...

FWIW : you might want to get a white wheel from Darex ( 80 / 100 grit or
so ) for roughing etc of HSS because although the borazon does produce
better finished work, it is painfully slow where you have any kind of
substantial amount of metal that needs to be removed.

If I was to do it all over, I would probably go with a cuttermaster instead,
or better yet, a weldon air bar and a #2 Cincy or KO Lee



I have a cinci #2 for sale

On 2012-05-05, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
I finally found a Darex E90 endmill sharpener in CHERRY condition, and with
all the collets, stones, guide finger... even a stand, for $1400!

YES... no more dull bits!

LLoyd

Wow, you bought it just 4 hours after it was listed!

Congrats,

i

Ignoramus18788 fired this volley in
:

Wow, you bought it just 4 hours after it was listed!


I promised myself if I could find one under $1500, and with all the toys, I
would get it.

Just on a lark, I checked to day, and it had a BIN price. Bingo!

LLoyd

On 2012-05-05, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus18788 fired this volley in
:

Wow, you bought it just 4 hours after it was listed!


I promised myself if I could find one under $1500, and with all the toys, I
would get it.

Just on a lark, I checked to day, and it had a BIN price. Bingo!

LLoyd

I sold a very nice Cuttermaster for $750 or so half a year ago...

i

Ignoramus18788 fired this volley in
:

I sold a very nice Cuttermaster for $750 or so half a year ago...

Cuttermasters are nice, too. Was that a Cuttermaster Pro, or the
"small" version? How new? How many collets? Stand? The E90 I got is
virtually virgin, and everything's in the kit.

Despite PM's post, I have it on authority from a couple of other regular
users that a _skilled_ user of an E90 can make very close to factory-new
edges AND ends on milling cutters. Only, like so many things, it takes
some skill. PM probably hasn't spent the time to learn. I'm retired.
I'll find the time.

So... Ok... I ruin a dozen junked bits that are useless anyway. I'm an
apt student. Bet I either figure out how to make it work to snuff, or
figure out why it can't -- and fix it! G

These things are not complicated, but they are expensive in terms of time
to build from scratch. Even a ready-made machine that doesn't work
_quite_ right would be easier to fix than making one myself, and I can
guarantee that the $1400 I paid was less expensive than the cost of the
'normal' fully-equipped jig Plus a Cincy #2.

I just signed a new, large 8-month contract for machines Friday. I need
time and sharp bits. I don't need to make the machine to sharpen them.


LLoyd

On 2012-05-05, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus18788 fired this volley in
:

I sold a very nice Cuttermaster for $750 or so half a year ago...

Cuttermasters are nice, too. Was that a Cuttermaster Pro, or the
"small" version? How new? How many collets? Stand? The E90 I got is
virtually virgin, and everything's in the kit.

Despite PM's post, I have it on authority from a couple of other regular
users that a _skilled_ user of an E90 can make very close to factory-new
edges AND ends on milling cutters. Only, like so many things, it takes
some skill. PM probably hasn't spent the time to learn. I'm retired.
I'll find the time.

So... Ok... I ruin a dozen junked bits that are useless anyway. I'm an
apt student. Bet I either figure out how to make it work to snuff, or
figure out why it can't -- and fix it! G

These things are not complicated, but they are expensive in terms of time
to build from scratch. Even a ready-made machine that doesn't work
_quite_ right would be easier to fix than making one myself, and I can
guarantee that the $1400 I paid was less expensive than the cost of the
'normal' fully-equipped jig Plus a Cincy #2.

I just signed a new, large 8-month contract for machines Friday. I need
time and sharp bits. I don't need to make the machine to sharpen them.


LLoyd

Lloyd, I am very interested, myself, as to

1) Whether one can do a good job sharpening dull end mills
2) How long does it take.

Keep us updated.

i

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
Ignoramus18788 fired this volley in
:

I sold a very nice Cuttermaster for $750 or so half a year ago...

Cuttermasters are nice, too. Was that a Cuttermaster Pro, or the
"small" version? How new? How many collets? Stand? The E90 I got is
virtually virgin, and everything's in the kit.

Despite PM's post, I have it on authority from a couple of other regular
users that a _skilled_ user of an E90 can make very close to factory-new
edges AND ends on milling cutters. Only, like so many things, it takes
some skill. PM probably hasn't spent the time to learn. I'm retired.
I'll find the time.



Dude...

I've been a machinist for nearly 35 years now, pretty much my entire working
life...

14 years of that time was at Boeing, where I spent quite a bit of time
grinding tools and parts of all sorts and I've been supporting my family by
running my own shop ever since ~1997 when I quit Boeing and beings as I've
actually been using my own Darex E90 for about 16 years now, I'm here to
tell you that there's simply no way in hell that you are EVER going to get
the thing to produce edges that are anyrthing near to "factory new"....

Sorry, but it just ain't gonna happen no way no how....

Yhe machine is seriously lacking in mass for one thing, and you are NEVER
going to get the wheel head to run even close to balanced and even if you
did, the residual vibration is still going to give you a crappy
micro-finish...you *might do a little better if you ditch that flimsy little
bedframe steel stand and set it onto a sturdy cabinet or a granite plate
but...

At this point, I'm pretty well convinced that your "couple of regular users"
are either pulling your leg, have never used better equipment, and/or seldom
purchase new endmills or more likely some combination of the above.

That said, they are what they are, mine has probably saved me nearly 100
grand over the years, but there are a handful of jobs that I run here where
I really do need a high quality grind, and those tools I send out, mostly
because I do not have the floor space for another grinder.


So... Ok... I ruin a dozen junked bits that are useless anyway. I'm an
apt student. Bet I either figure out how to make it work to snuff, or
figure out why it can't -- and fix it! G

These things are not complicated, but they are expensive in terms of time
to build from scratch. Even a ready-made machine that doesn't work
_quite_ right would be easier to fix than making one myself, and I can
guarantee that the $1400 I paid was less expensive than the cost of the
'normal' fully-equipped jig Plus a Cincy #2.

I just signed a new, large 8-month contract for machines Friday. I need
time and sharp bits. I don't need to make the machine to sharpen them.


LLoyd