On Wed, 18 Nov 2020 21:14:13 -0500, DJ Delorie wrote:


In addition to what the others have said, one caution - doing this with
a drill press (I've done it) tends to cause the quill to fall out, which
not only ruins whatever you're working on, but might injure you as well.

And I managed to bung up the taper to the extent that now it won't
stay. But I haven't been able to find a burr on it.