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In Reply to: RE: Spinning shellac! (photos) posted by coffee-phil on May 18, 2017 at 15:47:32
I also look for just the 99% isopropyl at one of our local department stores, Fred Meyers. It used to be everywhere in our city, but most local stores carry only 91% or even 70% now.
As far as I know, less alcohol percentage may not be that bad, since the remaining fluid percentage is water anyway. Hopefully it is distilled or purified water. Therefore, all we need to do is use a lower dilution of the 70% or 91% alcohol in order to achieve the desired percentage of alcohol in our cleaning solution.
Follow Ups:
Hi Alaskahiatt,
I have not had a problem with the 91% stuff and I used the 70% stuff before that.
I'm guessing that if you keep it from the edge or the center hole you should be OK. The playing surfaces are Condensite which is a plastic Edison's chemists developed. It is said to be similar to Bakelite. With care and records in good condition I think the lower concentration stuff should be OK. I have some Diamond discs which are pretty raggedy near the edge. With those records I'd worry about the solution getting to the core via the small cracks and causing further delamination.
Phil
I should have been more clear. Or did you mean that you use only the 91% alcohol on the diamond discs without diluting it?? Boy, you sure are correct about avoiding those outside edges of Edison diamond discs when using water. Some of those damaged Edison diamond discs look like a stack of pancakes.
Hi Alaskahiatt,
I just use the 91% isopropyl alcohol on Edison diamond discs, although if I were to bring home an Lp from a thrift with sticky, nasty stuff on it I might be tempted to try it. On Lps, I use Nitty Gritty's PURE 2. Shellac 78s get PURE 1. I have only one Pathe record and while it is vertically encoded and spins at 80 RPM it looks like shellac so I use PURE 1 for it.
Phil
nt
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