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Cleaning Solutions, UltraSonic and not

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I use denatured alcohol to clean the "shellacky" residue that forms on the inside of watch cleaners' jars and SS containers. It breaks down that stuff easily and visibly cleanly.

I don't think that I'd use it on pallet-forks or balances with roller tables/jewels installed. But regarding your basic dilution of isopropyl found in drugstores around the world, is it safe to use as quick rinse on complete balance assemblies? I ask because I just serviced a little 7.75L GP wrist-watch and it's running quite fast. I had noticed that the hairspring was sticking together a bit after soaking in Coleman fuel, what I believe is naptha. It seemed like there was  still a residue left behind.

So, would I be safe, and effectively remove the residue, by swirling the balance around in isopropyl for a bit after soaking in naptha? If there's any question, I'll just have go get some more One-Dip. I don't like the toxicity of it, or that it seems to disappear in a couple of years even if you have the cap on tightly. Any learned help is appreciated.

The problem with these small movements is that each time you manipulate things, you get close to disaster. And it's a game of numbers. Cheers.

 

Edited by MrRoundel

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