I was searching the web today to see if I would derive any benefit from rinsing my bisqued pieces before glazing them (only if they are really dusty after grinding etc., otherwise just blowing any dust off is best). I found this great article from ceramicindustry.com .
It has a great list of myths about pottery making that is very interesting.
Enjoy!
Since pottery is an endeavor that involves many steps-any of which can cause total failure-potters often misguidedly cling to a set method or technique that they think will provide a guaranteed result.