pdp1@EARTHLINK.NET on sun 27 apr 03
Bought a top-of-the-line U.S. made 'Green Wheel' some years
ago.
Was 10 inches in diameter...and inch wide. I was using it to
grind the brass stems of various Tungsten Carbide Tools
where the end is welded (beazed) to the stem. In doing this,
some of what was getting 'ground' was the Carbide as is
continuous with the stem.
Wore that Wheel out ( down to a few inches diameter) in a
couple days getting ready for the 'nceca' as was in Las
Vegas at the time.
I do not know on what basis assertions may be made that a
Green Wheel will 'sharpen' Tungsten Carbide.
I will say I have heard it often said, and I was carefful to
get the 'correct' Wheel.
Tho' it will 'grind' it, in my experience, in a way, tho'
not to a useful or sharp cutting edge, if you don't mind the
Wheel ( wholesale cost of which was $135.00) going away
rather quickly.
Maybe fine for other things, or some of the 'softer' kinds
of Carbides...
Didn't work for me.
Phil
Las Vegas
----- Original Message -----
From: "Rick Mahaffey"
(snip...)
> We had to use a
> "Green wheel" grinding wheel (used for sharpening carbide
tools) to
> sharpen the blades. Heating and heat treating was
essential as these
> metals will break if not heated properly and will not be
hard enough to
> hold an edge for long unless treated as Mel describes.
>
> His are almost as good as the carbide Kana I bought in
Japan when I
> lived there. Still using them with little evident wear.
I may have a
> machinist who will make them so that we can buy them here
in USA. I
> will still continue to buy them whenever I am in Japan
just to make
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