Getting a grip on the surface good enough to give you the control you need in the presence of sawdust is a lot harder than it looks at first glance. You might be able to make it work by putting a big magnet on the underside of the surface to attract the router, though.
I think that the magnet idea could work if you added 3 electro-magnets to the router chassis and made another chassis (to ride around underneath) with 3 corresponding ferro magnetic pads.
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Getting a grip on the surface good enough to give you the control you need in the presence of sawdust is a lot harder than it looks at first glance. You might be able to make it work by putting a big magnet on the underside of the surface to attract the router, though.
It would have to an extremely powerful magnet though, since it can't be right below the router.
It could if had its own set of wheels+servos. But it would still have to be powerful enough to attract the router through the surface.
I think that the magnet idea could work if you added 3 electro-magnets to the router chassis and made another chassis (to ride around underneath) with 3 corresponding ferro magnetic pads.
You could just have removable weights on it. Suction feet is the other obvious one.