wrote

If the "heavy casting" only connects at the front and doesn't continue to
the
back, there is room for error.

Buloney.

It will go to the same place, every time. That is what is necessary.
Repeatability, and the stremgth to resist a moderated amount of side
pressure.

If you are afraid it moves while you cut, your table alignment or technique
needs adjustment.

You should not have to put enough pressure on the fence while making a cut
to move the fence.

Re-read that last sentance again, and believe it. It is true.
--
Jim in NC