Yes D-2 sucks, Like dude said, you have to push it. As far as wheels,
blue 46h SG Nortons work good.
Now here's something that really helps If you can get a variable speed
controller to control your Wheel speed. You want to slow down your
wheel, not speed up!
Keep your heat down... And also Plunge grind and move across. Also
try a 60h wheel. D-2 will glaze your wheel so get under the skin.
NO.....That's not it damnit! D2 sucks, lets finish this damn thread!
I got a blue norton 46 (I love norton), use it for copper electrodes and
aluminum and used to use it for chrome plating before someone gave me a pink
norton ceramic wheel. WOW. I wish they would let me have that wheel for
D2 is hard as hell.
A couple of extra rockwell's equals a lot of wear. D2 is uaually 58-62.
Sucks to side wheel.
So far for general purpose in my world has been an 80 grit, maybe a J
hardness or harder, dresses fine. (Dressing accounts for half of how the
wheel will act).
But then the last place I worked ground these medical tips using one pass
on D2, silicon carbide wheel, 40 parts, 1 dress, 1 tenth?
So I guess it depends on a million things like it always has.
Is it a dedtru or a flat grinding op? Or is it in a spinner? Is it a floor
or a sidewall?
Is it a one pass cnc op or a manual rough/finish op?
I say this, expect your wheel to wear.
Here's a trick that helps me...
Dress it rough, and dress it smooth!
Touch off with a sharp diamond. If it's not sharp rub two diamonds
together, or if you have only one diamond, hit it lightly a "bunch" of times
with a steel hammer. A piece will break off microscopically making sharp
First of all make a few quick dresses, a few grand deep, deeper than at
least the deepest cut the wheel has taken in the past. (Get under the
Dress it smooth, dress it slow. What your trying to do it make more cutting
surface. Dressing it smooth could easily create twice the wear surface.
Ok, now after dressing off .005-.010 real fine, you need to sharpen the
wheel. Drop down a couple of tenths, and crank across relatively fast, .2-.3
a second. This will sharpen the stones. Wait a few seconds, then run back
the same speed.
Now you have a sharp wheel, that's clean, and has the maximum surface of
cut resulting in the least wear.
THAT'S FOR FLAT GRINDING!
Side wheel grinding is a different story If anybody cares we can walk down
that road, if not, just ignore this post.
Awe hell, I've had a few, i'm not stopping.
For side wheel,
For D2 dress a negative 1 degree angle on the wheel for side dressing. 1.5
degree max. Dress the bottom super slow to make the edge as dense as
possible. Use an 80J. Or if you have access to orange wheels, a 120k is a
Try to use a 1/2" wheel, a 1/4" wheel will flex.
Do not use a 220Q, or some ridiculious wheel. Or the 38A400Z i found
today(holy ridiculous bat man), they are so hard it's impossible to dress
For slightly less harder, 40-60rc, dress a negative -2 degrees.
When side wheeling act like your polishing, move across fast, making
hatches, then go slow and grind off the meat between the hatches. And blow
the wheel out with an air hose between roughing and finishing.
D2 will bow down to your wims! Girly man steel!
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