[78-L] First LP

[Robert M. Bratcher Jr.]

At 11:50 AM 6/24/2010, you wrote:
>From: "Robert M. Bratcher Jr." <bratcher at pdq.net>
> > A 16" disc could hold 15 minutes with standard (pre microgroove)
> > grooving which means they could put up to 4 takes on each side of a
> > 16" disc at 33 rpm. I'll bet that saved them some money when 
> buying lacquers!!
>
>Not quite.  For high quality it is not recommended to cut at less than
>8-inches diameter which yields about 11 minutes.  That would be two
>12-inch takes or three 10-inch takes.

I didn't think about the quality loss when going in beyond 8 inches......

>Lacquers were actually quite cheap, less than $3 for a 16-incher.  MUCH
>less than what a wax cost, even considering shaving and reusing.  The
>problem in wartime was glass.  They would want to use it for their
>safeties, but it was superior for the actual master for plating.  I do
>not know what they actually did.  Seth, and possibly Doug, would know.
>
>Mike Biel  mbiel at mbiel.com