"DoN. Nichols" fired this volley in
:

With the height of the *top* of the tool being the important
point. BXA handles up to 5/8" shank tools, and at least Carbide insert
tools tend to have the cutting edge at the same height as the top of
the
shank, so you need to have your center height at least 1-1/8" (ideally
a
little higher) above the top of the compound.


Yeah, but hand-ground HSS tools often have the cutting edge depressed
from the top edge. You have to know all the dimensions -- the highest
the top edge might ever be, and the lowest that the (say) middle of the
tool might ever be.

LLoyd