"Harold and Susan Vordos" wrote in message
...
An operation such as that is
called trepanning, where you remove a core piece without reducing it to
chips. It can be accomplished easier with a boring head, but even that
can

Harold,

Are there bits commonly available for trepanning in a boring head? If I
wanted to make one, how would it be shaped? I'd start with round stock so
that it could be mounted in the head, yes?

Regards,

Peter