I have a darex...works great for grinding the OD but that's about all--dish
angle on grinding the ends is insufficient as it is and to make matters
worse, the slide is permanently set to an angle that is so close to the
built in angle that the diamond and borazon wheels drag on the finished
work--and keeping an alox wheel properly dressed for that function is near
to impossible as eventually you need to dress the whole side angle...
I guess so what Im saying here is that the two axis swivel design on the
wheelhead of the cuttermaster would in my opinion be a huge improvement over
the Darex at the very least.
Well it's a huge improvement over the original Cuttermaster too. I had
one, the older version with the aluminum sleeved air spindle, which was
worn and would constantly bind from carbide dust being dragged back into
the bore. No air pressure setting seemed to prevent that. And the bore
had plenty of scars the first time I took it apart, which helped explain
why I got it for $300. Cuttermaster wanted nearly a grand for a new
unit, I ended up making a new sleeve out of bronze. That was a bit of a
Anyway, the old Cuttermaster radius attachment, at least on mine,
suffered a severe lack of rigidity, it required a fine touch to generate
any radius or taper without it wobbling around. Since I was doing a lot
more of that sort of thing than sharpening end mills, I sold it and
bought a Deckel SO.
If I weren't stocking most of my new end mills off ebay cheap, I'd
almost consider buying this new design, though I could probably find a
serviceable full on cutter grinder for less.
All in all Iv'e had pretty good luck with the Darex air bar--although at one
point a couple of the orifices had gotten clogged and so it started acting
all sticky and weird...after much screwing around and head scratching
thinking I finally ended up filling them in with solder then re-drilled
using a tiny drill in a pin vise...good as new..
I'm of the opinion that I was swindled when I purchased the darex radius
attachment--the POS it is so sloppy and the design so ill concieved as to
make it all but un-usable for the intended task.
I would probly get a cincy #2 or maybe a ko lee for here but the floor space
here is just plain too precious.
Mostly Mcmaster-Carr here, their end mills are generally name brand USA made
stuff and while they're not top of the line they typically work out just
fine for general purpose application....I might go someplace else but since
we buy a gazillion other things like raw materials fasteners dowell pins etc
from them anyways and frankly my cutting tool budget rarely exceeds a few
hundred dollars per year so might as well have them toss in a handfull of
end mill and save on some shipping.
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