Nope, that's not it. That's just a tool bit grinder, not a universal
cutter grinder. The one HF had was ~$750 or so regular price (add your
20% coupon of course). The grinders that handle rotary cutters like end
mills are a *lot* more complex than grinders that handle lathe bits and
On 2010-08-16, Lloyd E. Sponenburgh <lloydspinsidemindspring.com> wrote:
Darex what? Like this one?
I am just trying to understand the basics of it, so if I come across
something at an auction, I will know what to look for.
Yep. That's it. It has an air bearing spindle that allows a bit to follow
a "tracer finger" so the flutes are re-ground precisely. Of course, it
will reduce the diameter of the bit, but quite reliably and accurately.
The Darex is sort of the "Cadillac" of end mill sharpeners. I find them
used, but in good condition, on Ebay for about $1400.
On Mon, 16 Aug 2010 14:51:31 -0500, Ignoramus28874
This will work for you.
Then there are....
(Id offer no more than $1000)
Sigh... Worn, old, no collets, need new stones, none likely to have the
precision they were originally built with.
Y'know... when I go to sharpen an end mill, I want it to be "factory
new", except for the diameter, when it comes out of the machine.
What I don't want to do is spend yet another year re-building another
piece of old junk. I really want to spend my time machining parts.
I've used a Cincy... too much learnin' to do to make an even passable
job. It's WAY too complex for the "casual sharpener".
I've used a Cutter Master... it's about the same functionally as the
Darex, but WAY more expensive for one in the same condition.
The Darex E90 can be had in "almost new" condition for about 1/4 what a
similar-condition Cutter Master can. And despite it's "low end" status in
your book, the Darex offers the same precision and longevity for a lot
And Gunner... the first two "almost kits" you listed... what's that for?
You can't sharpen _anything_ on them 'til you build the rest of the
machine. It takes a bed. It takes a motor, it takes a cup stone, it...
takes some really long "building up" to get where I'd want to be with a
milling cutter grinder. Some people work, and some people only do
machining in their "spare" time.
On Mon, 16 Aug 2010 16:48:13 -0500, "Lloyd E. Sponenburgh"
True indeed. But..does he need that precision?
Good on you. And one has to spend a bit of money to get that result, or
find work arounds to get "almost as good"
Odd..Ive a B300 KO Lee..and it took me a couple hours to learn to use
it. Included a bunch of accessories like a Harig Air Glide endmill
sharpener etc etc etc. 5c motor driven gizmo, indexing head etc etc.
Like Iggy..Ive sources that others here dont have. Mine cost me a
service call. Hummm $186 traded for the grinder. I thought it was a
Indeed. However its not aluminum either.
The prices I showed were all within $200 of a used Darex. Or did I miss
something? And the prices were simply part of the ads for things Iggy
should be looking for. Im sure he can beat Ebay prices by a magnitude.
It takes a surface grinder. Period. Iggy doesnt have one? Hell..he can
find them for $50 or less. Cup wheel and voila..he has a $200 tool and
cutter grinder that will do just hunky. Even a worn out surface grinder
will work fine with one of the fixtures I cited. As long as that cup
wheel spins....its good enough.
And a hell of a lot cheaper than a used aluminum Darex. Remember..I own
a Darex. It worked ok. But..only "ok" and I didnt spend $1200 for it
But there are all sorts of Better options within his grasp. He is quite
good at finding Stuff and at damned good prices. I showed him what was
available and what to look for.
Indeed. However..I presented the info for Iggy..who has a lock on
finding surplus machinery in his area. In fact...several of the cites I
presented were intentionally from Chicago area.
I respect your opinion deeply. But I presented the info for Iggy, who
has resources others here do not have.
On Mon, 16 Aug 2010 21:05:00 -0500, Ignoramus28874
Grinding an endmill can be done "perfectly"..or "not half bad!" and the
precision is vastly different when measured. Just a heads up....dull
does not mean no precision and Precise does not necessarily mean
I have confidence in a Fellow Scounger of your caliber. Indeed!
On Mon, 16 Aug 2010 14:27:41 -0500, "Lloyd E. Sponenburgh"
Darex is the low end of end mill sharpeners. Seriously. Cuttermaster
(which Darex copied), Harig, KO Lee and others are the middle of the
However.,.that does not mean the Darex wont do a perfectly good job. I
have one somewhere...I think its still in my cargo container. Ill have
to dig it out next trip to LA and offer it up here.
On Mon, 16 Aug 2010 07:55:50 -0500, Ignoramus28874
KO Lee B300 with the proper setup or Darex E90 endmill sharpener. The
Darex will fit on a table top. The B300 is bigger, but not that big,
however it does require about a 36"x36" bit of floor space.
You have a surface grinder? Then there are a host of other fixtures for
Here's another type of jogging pad that you might want to consider:
It's based on a standard game pad controller, but has been marked by Tormach
for the axis and step functions. In Tormach's implementation for a Mach3
controller, clicking on one of the axis keys selects that axis. Rotating
the outer ring moves the axis continuously in the + or - direction with the
jog speed increasing the more the ring is rotated. The ring is spring
loaded so it snaps back to position once relased. The inner disk with the
finger depression moves the axis in increments of 0.0001" to 0.1". The Step
keys toggles up and down the range of increments. It works pretty slick on
my Tormach. You can probably find the generic OEM version cheaper, but I
like having the functions labeled.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.