[ProAudio] Question for Rich Breen re Aluminum discs

[Kevin P. Mostyn]

Wikipedia says bare aluminum discs started in late 1920s.

https://en.wikipedia.org/wiki/Aluminum_disc?wprov=sfti1

Kevin

On Nov 4, 2021, at 10:40 AM, Kevin P. Mostyn <lists at mostyn.com> wrote:

Let’s let the original poster clarify his disc. I’m not sure when embossed aluminums first were used. I have a bunch from the mid 1930s that I had Ward Marston transfer. He used standard styli.

Kevin

On Nov 4, 2021, at 10:36 AM, Scott Dorsey <kludge at panix.com> wrote:

That seems early for an embossed disk.  I have a giant ball stylus that
rides on top of the groove for embossed plastic discs of the forties,
but I have never tried it on embossed aluminum.
--scott
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://bach.pgm.com/pipermail/proaudio/attachments/20211104/4362f233/attachment.html>