Router plate with follower guide

Router base plate and a template guide. For an older Black and Decker model 7914 router.
I was making the parts to build 75 cubbies/lockers for my son's school (be careful when you volunteer) and I needed to router 600 dadoes for shelves. So anyway, I broke the router base plate (again) by dropping a tool and hitting the plate. Well, that's what I get for buying (and abusing) a router with a cheap plastic base plate; it has broken twice in less then 30 years!

The template guide is 1" in diam