It's not hard Ray honestly there is no secret to threading, simply a matter of getting your sizes right this subject seems to have grabbed by the goolies init?
If you wanna make threads like him all you have to do is invest in the taps and dies.
A triple start tap & die will give the appearance you're after and part off at the rear of the thread for neatness.
I see his site as a partly completed site with no more than kits and a few custom made's a good site for him in the making good luck to him but nothing special to us.
