In article <2tq1jk$mk6 at usenet.srv.cis.pitt.edu>, lxzst+ at pitt.edu (Liminzheng) writes: I see you've received several responses already, but if your intereseted in the eletro-sharpening method it is described and illustrated in Manipulating the Mouse Embryo - A Laboratory Manual 1986 (ISBN 0-87969-175-1) page 275.