The Secret Society of Lathe Trolls

For those of you who read my Introduction, https://lathetrolls.com/viewtopic.php?p=3285&highlight=&mforum=lathetrolls#3285 and my student's paper from middle school in 1976... http://78rpmrecord.com/altformat.htm ...I have been wondering for over 30 years about these two-sided stereo shellac 78's he...

Or if you are going to have a diamond cutter stylus anyway, just ditch the whole lacquer business and get the double-thickness DMM blanks made in Germany. The normal ordinary regular-thickness DMM blanks like what you used to find at Marcussen Mastering or Sterling or Europadisc, can be noisy someti...