[Biagio]

a good portion of the work piece edge can be cut off at the table saw prior to using the bit on the router table. Extend the life of your cutting edge and save yourself some time. Create an edge on a scrap piece of work, from there you can get a good idea of how much you can remove at the tablesaw.

Steve what the guys are saying is that you can reduce the load on bit and router by first cutting a 45 degree bevel on your board on the saw, taking care not to cut the full thickness of the board, I.e. leaving a thin facet at the top, to ride against the router fence. Otherwise, you would be pulverizing more than the thickness of your board with the router bit (because of the hypotenuse), with all the dust that flesh is heir to.

 

[Biagio]

Harry, I’m with Stick on this. Removing the excess stock does not require infinite accuracy - that will be supplied by the lock mitre bit itself. Using a 90 degree V bit will still mean pulverizing all the wood below the diagonal. Easier and quicker with a saw, especially if doing long boards.