I have the one for the Dremel and the rotozip, the rotozip is almost a router.......
I was talking to someone the other day and he said someone makes what I'm looking for but could not remember the name of the company........ So I guess I have to do a bit more searching.
I did find a reference to the 310 plunge but the cost was well prohibitive they are custom made and all AL. so that is not going to happen for me.
Thanks for the dremel idea anyway..... I also have the router table and vertical stand/drill press that work for very light routeing.......
Ed