No this is very unorthodox way of making it and is only good for this application. in this application I suppose it does work because the thread is 60⁰ included angle and that would make it 30⁰pa on the worm wheel and using a tap like a hob to gear cut it. Normal way of making wormwheels is single point fly cutting or gear hobbing.

Questa è la cosa bella del principio, non devi nemmeno calcolare il diametro, alla fine si bilancia! (Google Translater)