The Secret Society of Lathe Trolls

Hello everyone. I just want to get this out there that I have next to no clues when it comes to the process of producing records. I have a rudimentary understanding that lathes are used to cut the grooves into the stamping masters which in turn gets used to press vinyl records. Thats as far as I got...

Hello I'm new to this site with little or no knowledge of pressing vinyl. I vaguely remembered reading on a web site where someone in a University had managed to record a 70KHz signal onto vinyl. Is this achievable? Did I misread that site or remember it all wrong? :oops: Is this guy's math correct ...