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> The bottom part of the Disc Cutter's Block is not a cutting edge but
> you can use this to guide
Kenneth is correct, but that doesn't mean the bottom flat is not
important. If you make it convex it will dish your discs and not cut
well or maybe at all, if you make it concave you will lose the
support for your cutting edge, and possibly affect your discs, too.
In tool steel the human thing is going to be to sharpen the edge and
make the center convex, because it is a lot of work. I tried to put
out a way that would be reasonably precise - a drill motor and a
stone and toolrest, but Jim is right. For a good job they must be
precision ground one way or another. I could do it on my lathe with a
toolpost grinder (for myself - don't want the job....), but sandpaper
will be death for them. You can't generate a.001" edge with .01"
(or.1") resolution tools - can't be done.
http://www.donivanandmaggiora.com
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