You have to use it with different router bits for the size you desire.
I don't think so. Unless you can make a special template to match with it. Lastly, are you sure you can get a router bit like what they recommend.
it will not work on a metal door unless the door has wood edges. works fine on exterior doors.
you have to buy a corner cutter for corner cut. router bit is rnning round.
It is best to have the stops in place for easy and accurate positioning.
No need to remove the jamb.
Its plastic, but strong. You do have to nail it to door or frame.
haven't had that task. but when there's a will there's a way
Yes. You will have to remove the door stop trim though.
Any full size router with 5 or 6 inch base