Again, w/ the size of the chamfer I'm talking of and a _sharp_ HSS bit,
the left edge is essentially undifferentiable from a planed or scraped
edge. So little material is removed there's not a tendency to tear and
the HSS edge is much sharper than carbide.
It seems most are confusing this with taking a large chamfer or a 1/8"
roundover--it's nothing near that large.
That's true -- mostly a question of surface tension. The finish will pull away from sharp edges.
There are other reasons for relieving edges as well: it provides a softer, more finished look; a
sharp edge will wear much faster than a slightly rounded edge; and a sharp edge is
uncomfortable to the touch.
I normally use sandpaper, but I've been known to use a table-mounted router with a 1/16"
radius roundover bit too.
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