Hi Freakshow,
The unit the bike shop uses is probably like this one or is the cheaper one I have already posted an image of (it sells for around $100.00USD.
They are the best made hand operated units around.
They press the threads into the spoke which raises the threaded area making it larger then the spoke.
There is some fragments that drop out but not from cutting.
Damn brother I was hoping there was an easy and cheap way, oh well back to hoping.
Ji