http://youtu.be/aAvBl-4h4cU
http://youtu.be/XS9l79FtrSU
http://youtu.be/VB_YDdPRJYI
The Above videos take you from Edison's cylinder blank production to how blanks
are made at Borri Audio Laboratories. You will see the manufacture of metallic
soap, the molding of a phonograph blank (in 1900 and present) and how the blank
is trimmed and edged. Only 3 people on the planet who can share this with you.
Lets stop the bickering, by the way, all of us who make these things are
friends, all put a ridiculous amount of time into something not so appreciated,
and sometimes ridiculed as phonographic blasphemy. Add up the time of each
operation. The compound takes 7 hours to make, about an hour to mold each
blank, and 10-15 minutes to trim and edge a blank. They sit for 30 days and
are shaved, shaving a blank from 2.39" down to 2.196-2.170 takes 20-30 minutes.
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