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In Reply to: RE: Spinning shellac! (photos) posted by Dave Pogue on May 18, 2017 at 14:46:22
Nitty Gritty sells a fluid called PURE 1 for 78s. I use it for my shellac records.
For Edison diamond discs I use 91% pure isopropyl alcohol. I would use even more pure stuff if I could find it.
For vinyl records (78s as well as Lps) I use PURE 2.
Phil
Follow Ups:
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.
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
Hi Dave,
Yes PURE2 has alcohol. If you suspect a record of containing shellac do not use PURE2 on it. Any record made before WW2 most likely has shellac in it. For later 78s tap on the edge and compare the sound to an Lp. If it sounds the same as an Lp you are probably safe with the vinyl cleaning stuff. Another clue is that the vinyl records may say unbreakable on the label.
Phil
Contains alcohol (death to shellac)
I know you talked about 78 rpm VINYL, but just to be on the safe side.
Yes, most definitely! If in doubt, use PURE 1 as it won't hurt vinyl.
I have a few standard groove vinyl 78s as well as micro-groove vinyl 78s on which I use PURE2, but If you are not sure use PURE1.
Phil
You can get 99.9% on Amazon, I've gotten it for other uses where azeotropic wouldn't suffice. It's not cheap, but you can probably last a while on a quart.
Hi Todd,
Thanks! I just checked. It is ~ $10 for a quart. I probably paid more than half that for the 91% stuff and I had to look for that. 70% is common.
I'll get some on my next order to Amazon.
Phil
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