On 2 Apr 2005 17:29:35 -0800, wrote:

Thanks for the input, but I'm pretty sure I will be able to cut
internal threads using a router mounted to the lathe. Here is where I
got this specific idea.
http://www.cuemaker.com/book_on_cue_...etools_web.PDF.

That should work fine. You might want to cant the router vertically
at an angle equal to the helix angle of the thread. That way the tool
will be following the path of the thread as it rotates, and the
60-degree point will really cut a 60 degree thread.