[78-L] Wax!

[neechevoneeznayou at gmail.com]

just getting back to this

which video is the one about making World ETs with Rubinoff?

And where cn it be found, Prelinger Archive?

joe salerno


Michael Biel wrote:
> Robert M. Bratcher Jr. wrote:
>> Why was the wax blank so thick? Stability with an inch thickness 
>> maybe? Did a thinner wax blank not hold up well or something?
>>   
> 
> They shaved and reused them many, many times.  And yes, a thin wax disc 
> is quite liable to crack.
> 
> But there was a thin type of wax disc that was developed by Western 
> Electric first for their Wide Range Vertical Recording because a wax for 
> a 16-inch disc was very, very heavy, but also because shaving brought 
> out internal stresses which might cause lateral movement in the groove 
> when processed.  Victor also started using it, and others might have 
> also.  It is called the "flow coat" and is shown in the video about how 
> World ETs are made with Rubinoff.  A metal disc was put on a hot plate 
> and a wedge of wax is melted on it.  They were made about a half hour 
> before recording, giving it time to cool down and solidify but not 
> become cold.  In the Victor ledgers there is a WAX column.  If they used 
> a flow coat it says "Flowed" but if they used a thick wax blank they put 
> the number of the wax in the column.  Each wax was numbered and kept the 
> number every time it was shaved and reused.  There are also notations in 
> that column for lacquers and optical film. 
> 
> Mike Biel  mbiel at mbiel.com 
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