The thread rolling machine mentioned by Douglas Heffer is beautiful
looking and is made specifically for the job of putting threads
anywhere on a wire.  To find it you have to go to the organ page and
download the catalog of organ tools.

 [ http://www.laukhuff.de/orgelbau.laukhuff-industries.de/en/organbuilding/products/tools-for-organ-builders.html 
 [ http://orgelbau.laukhuff-industries.de/images/stories/downloads/katalog/0.pdf 
 [ On page 7, threading machine (Gewindewalzmaschine).  -- Robbie

The server was very slow when I downloaded it and I thought there was a
problem of some sort but it did eventually download and was well worth
the wait.  The catalog is full of beautiful looking tools.  Who says
quality manufacturing is a thing of the past!

I never found the price of the thread roller but my guess is that it is
not too expensive because the design is very elegant and looks rather
easy to build. I would be interested in knowing how much it is or where
there might be a price list. A lot of the web site is translated to
English but I was not able to find a price list.  It might be easier
for someone in Europe to contact Laukhuff for this information.

Best regards,
Spencer Chase
Garberville, Calif.
http://www.spencerserolls.com/