What's the point? It's a lot of work to do, top end up with an inferior product?
Depends on spindle HP, and what you are cutting. With a 3HP or smaller spindle, it's probably not more than 20lbs. With a 10-15HP spindle, it can probably approach 100lbs or more.I have found it difficult to track down specific detail on cutting forces for routers as it has a lot to do with how the router is used.