I have been running normal green automotive antifreeze diluted to about 25% with distilled water, for our liquid cooled spindles. (But we've only had them for about 5 years.)
Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: Les Newell <[email protected]> Sent: Monday, January 17, 2022 8:23 AM To: [email protected] Subject: Re: [Emc-users] motor coolant for water cooled spindles. [EXTERNAL EMAIL] Be sure links are safe. I'd really recommend not using copper sulphate. It is corrosive to many metals, especially aluminium. In my laser and tig welder I use 20 - 30% propylene glycol in deionised/distilled water. Propylene glycol is the active ingredient in most RV antifreeze, without the dye and other additives. I've never changed the coolant in either. I just add water as needed. The laser's coolant has to be at least 8 years old and it's still clear and clean. Les On 16/01/2022 22:15, dave engvall wrote: > Cu inhibits algae and should do a decent job on most bacteria. So a > bit of Cu sulfate. > Zn chloride and or ferrous chloride inhibits moss but the ferrous > oxidizes to ferric and stains siding/concrete so use the chloride. In > a pinch just use a bit of Clorox; even peroxide should do the job. > If you can keep the mist away from your lungs you might try isopropyl > alcohol. > HTH > > Dave _______________________________________________ Emc-users mailing list [email protected] https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctoddz%40pgrahamdunn.com%7C7e7e4459fb4b4d6269fd08d9d9bca91f%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637780226600099463%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=p5fVwgT70wXoRoqyPQS%2Fu2TIVFlRWO9GhlwcdnZAZvU%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
