How to piss of Australians by simply thanking them (leaving that group).. the abuse I get online..
I must say that Hackaday is the friendliest crowd
(apart from some curators refusing to add some of the projects to specific collections)

Playing stampers https://www.facebook.com/phonopress/videos/748715011886306 <- must watch

Sourcing stampers http://stores.ebay.co.uk/acetates4sale/Metal-Mother-Stampers-/_i.html?_fsub=8414872014

Optical reading of stampers could be fun, reflective surface like a CD..

Vinylmania: When Life Runs at 33 Revolutions Per Minute (2012)