Morning Lappa & Template Tom - a wild though and quite probably way off.
Could a drill press be used ? Has the tilting table and then use an up cut or down cut bit . With the jig held in the mitre slot as per the router table set up ?????
As I said a wild idea - I don't have a drill press at home and will NOT experiment down at the Men's Shed for safety & protocol reasons.
Regards - UPO - Richard