Hi Neuschu,
Take your router out and put it back together. Make a template to cut 11" by 8 " hole in your table top, use your router with a staright bit with no bearing. You can use a guide bushing or make your template bigger and and use the edge of the base. Go down 1/4" at a pass, exact size of your hole is not important 11" by 8" is an example.
When your hole is cut remodel your template so it is 1/2" bigger on the inside. You willuse this to cut a 1/4" + deep rabbit around the edge of your hole. Now you have ahole to put in a 1/4" router plate, this now holds your router and you drop it in the hole. The plate can be made of plexiglass, mdf, aluminum, etc. I know it is alot of work with one router but this gives you a 1/2".
Now, I know what the book says but you can come up out of the router, the bit I mean another 1/2". I have not had one come out in 25 years. Now you are up an 1"
If you are using cheap bits the expencive kind tend to be longer and bigger.
Grim |