carbide vs. solid carbide? Cheap carbide?
 

In article ,
Jon Elson wrote:

The genesis of the non-solid variety, as far as I know, is that in the
beginning, there
were cutters made with steel shanks and the cutter was welded on, probably
during the sintering process. I know this was true with carbide circuit
board drills. I'm sure nobody makes them this way anymore, at least in
modest sizes up to a couple inches diameter.

Sure they do. Go buy a masonry bit.

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