I'm building a router table, have my aluminum plate that will attach to
my 3 HP router and then rest in the tabletop on a ledge. (I'm building
Pat Warner's fence featured in Fine Woodworking Magazine and at his
site: http://www.patwarner.com/routerfence.html -- by the way the cost
of the materials other than wood or MDF was approximately $130)

I'm wondering if other tables have a design element where the plate is
secured from moving upwards. From the various designs I have reviewed
and the tables for sale I've seen in catalogs/online, I do not recall
seeing anything that secures the router plate/route assembly to the
table top.

For those who have router tables, is your plate assembly secured somehow
to the table it is resting in to prevent the entire assembly from moving
in an upward direction?

Seems to me an aggressive cut could cause the assembly to climb. Pat
Warner's table design has his router bolted. Maybe I've missed
something on these table inserts?

John