Jon, What you're not taking into account is that there is no universal groove shape among 78's of different eras even on the same label. The first few grooves of play are intended to shape that particular needle, in that particular position, to fit that particular groove of that particular record. Standards were no tighter for the stylii used to cut the wax disc masters than they were for a regulated speed of 78.26 rpm (Edison notwithstanding, and with acknowledgement that his product was altogether different on a number of levels). That's why serious archivists have a number of stylii for playback of various labels/eras/etc. instead of only having one 'plays-it-all' stylus.
I do have one idea for you Greg, one with low mass that could securely hold a needle with the change-out being easy for the user and safe for the diaphragm. It involves a spring on the stylus mount and a groove in the stylus. I'll draft a picture to show you and send it off-list. Best, Robert ----- Original Message ----- From: "Jon Noring" <[email protected]> (edited) > One thing that makes me shake my head is the "necessity" of breaking > in needles by playing them on junk records to "facet" them. > > In my view, it would be better to pre-form the "needle" tip so it is > close to what it would be after it is "broke in" by playing. > Jon Noring
