spiral threads on a cnc

[myxpykalix]

http://www.instructables.com/id/TS1-Modular-Shelving-with-CNC-Wood-Threading/?ALLSTEPS

[Bobtail Farms]

Cool. Thanks for the pointer -- especially like his method to clamp the dowels for milling. BTW: Paul Rowntree has a gadget for Vectric V Carve and Aspire to cutting male and female threaded parts. Details @ that forum and his web-site.