Oooh, another lathe - how can I resist?! Mind I suppose I could just mount them on my instrument lathe. At least it sounds musical!
I wonder if part of any audible changes might be related to improved dynamic balance. I know that some BluRay discs can be heard to vibrate in our player in Germany. I would imaging that doesn't improve tracking accuracy / uniform reflection.
Listening to the playlist with albums i know very well confirms this is a great way to improve sound from CDs.
Noticed today a CD looked out of square After being treated it was fine so any irregularities were ground off Wonder if this may also improve sound
With an engineering background and the appropriate kit I think you could do this yourself Just take it from straight edge to what looks like 45', cutting the minimum off so as not to dig into the CD and ruin it !
Music. Better kit gives more music Played last :
Leftfield -Creedence Clearwat Revival -Cracker -The Hold Steady -Eno -Ry Cooder -Comsat Angels -Colosseum -Eric Clapton -Chrome -Chameleons -Captain Beefheart -Camper Van Beethoven -Peter White -Chris Rea -Brand X -Rick Springfield -Mogwai -Jack Bruce -Robbie Robertson -Box Car Racer -Neil Cowley Trio -Angels & Airwaves -Bonzo Dog Band -Beach Boys -Jeff Beck -Be Bop Deluxe -Bauhaus -Kevin Ayers -Audience -Santana -David Sancious -Cream