Hi Nicholas,
Am I right the material of the red coating is on base of collodion (cellulose nitrate) ? So the best solvent should be diethyl ether.? Highly flammable and known as anesthetic! Eric Van: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] Namens Nicholas Stock Verzonden: vrijdag 10 juni 2016 15:51 Aan: neonixie-l@googlegroups.com Onderwerp: Re: [neonixie-l] removing red coating from tubes Pedro, I use Acetone every day as a chemist...of all the solvents you can use, it's pretty innocuous (your body actually synthesizes small amounts normally)...just use it in a well ventilated area. Likewise, isopropyl alcohol may help you with the stubborn coatings also and is safe to use in a well ventilated area. If you still have some tubes with paint that won't come off, we can then talk about the solvents that are less friendly....:-) Best of luck! Sent from my iPhone On Jun 10, 2016, at 06:21, Petro Vodopyan <petro.vodop...@gmail.com> wrote: Thank you for your idea, Nick. I will try it this weekend. Previously i used a tank with acetone and also soaked tubes in it for a couple of hours. 70-80% of the coating became soft and was easily removed. But the remaining pieces still required manual cleaning. And another issue that different manufacturers/factories used different paint and it did not worked on some of tubes - the pain was not even softened. Also acetone is very toxic so i'd like to find a more "healthy" way to remove the coating. Anyway i will try your idea. Thanks С уважением, Петр Водопьян +38 066 55 78 780 2016-06-10 16:13 GMT+03:00 Nicholas Stock <nickst...@gmail.com>: Petro, no need to use ultrasound. I've had success with just soaking the tubes in warm water with a little soap for 30 minutes and then using a knife to scrape it off....came off quite easily. The only stubborn part was the glass tip of the tube where I gently used a scalpel to peel it off. HTH, Nick Sent from my iPhone On Jun 10, 2016, at 05:51, Petro Vodopyan <petro.vodop...@gmail.com> wrote: Hello, Does anyone know is it possible to remove the red coating from a nixie tubes (e.g. Z574) via ultrasonic bath without making any damage to the tubes? I have a bunch of this tubes but major part of them have scratches on red paint. So i decided to remove the paint and now i'm looking for the easiest way to do it (instead of scratching each tube with knife). Before i buy an ultrasonic bath i would like to know will this approach work or not. Any help is appreciated. Petro -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com. 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