"Kevin Daly" wrote in message
Is there a standard cutout size for the cutout, or do I buy an insert
plate and
size it around that?

Every brand is different. Most come with a template.


I've never had great luck with cutouts, how would you do the cutout
(router and
template)?

You have to cut two levels. The center is removed completely, the edge is
left intact to support the mounting plate.


As for the T-slot grooves for the router fence, how long would you
recommend
and would you put them on both sides of the bit?

Mine is in the front only, YMMV.
Ed