In article , Lennie the Lurker
says...

...The only other place I make an exception, the carbide
brazed boring bits are cheaper than good HSS kits, by more than half.
other than that, the HSS is more economical for most of the HSM uses.

Because I have not ability to sharpen carbide at home,
I stick strictly with the HSS boring bits. I've also
found that the mistakes I make when setting up a boring
tool will often trash out a carbide tool. Now *that's*
expensive.

Jim

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