Thanks for the link. It's a useful idea. One would have to be careful not to have the fence too far back so as to allow the bit to actually cut the core - for then, without an offset outfeed fence one would end up with unpredictable results.
I asked the H&L channel if they would consider showing The Router Workshop series as it is shown on the same USA channels as NYW but just had their normal stock reply which tells you nothing you dont already know.
'There are no plans to show... etc. etc.'