I made up this Excel threading chart for my 12x36 belt drive Taiwan made lathe, this type of lathe is considered a generic Asian/Chinese/Taiwan lathe sold under many names like Grizzly G9249, Warco BH900, Jet12x36, Lantaine, Honden, Herless etc so this chart may be of use to forum members, it gives acess to a range of threads that you may have thought were not possible to cut - in some instances the thread may not be a perfect match but if the error is small then if may work out ok