Originally Posted by 230E03140D0E0F610 link=1257027514/0#0 date=1257027514
Read the forums on CS about this... Been asked and answered many times before... http://coffeesnobs.com.au/YaBB.pl?num=1248646363
It is a very good training aid to assist you in your search for problems and getting consistant results.
see here for a good explination. http://www.home-barista.com/naked-extraction.html