I have no idea from a real world test how acetone and ATF work together as a penetrating oil, but it does seem unlikely it works well. First off they should not mix so they do not form a homogeneous solution. I would guess that 100% acetone would work well to penetrate but it is not very slippery. Even most hydraulic fluids are not naturally slippery, they require modifiers. Power steering fluid and ATF are closely related, but likely have differences in things like anti-foam additives. Doubt it would be a critical difference for a home brew penetrating oil.
Some of the normal vegetable oils are much more slippery, and do mix with acetone. https://www.engineeringforchange.org/news/2012/08/14/how_to_make_penetrating_oil.html So 10% acetone and 90% vegetable oil may work as well as acetone - ATF. The home brew formula may have started with 1,1,1-trichloroethane (a/k/a methyl chloroform) and ATF - Ed's Red formula. Doubt it was worth the hazards involved. http://fireironmfg.proboards.com/thread/87/penetrating-oil The one thing that I have noticed is that when two properly sized and clean threads have locked together nothing will penetrate to any degree that will help. That is why pipe thread can handle pressure and not leak. Yes, it is tapered and has a specific thread but normal non-tapered thread can seal as well. Just speculating, but on an old rusty nut that was not torqued down hard the acetone may do all the penetrating and loosen things up. The ATF may not penetrate at all but helps when backing the nut off. So the fact that they do not mix is not a problem. Michael Brown Windburn C&C 30-1 Message: 12 Date: Thu, 12 Mar 2015 00:13:08 -0300 From: robert <robertabb...@eastlink.ca> To: David Knecht <davidakne...@gmail.com>, cnc-list@cnc-list.com Subject: Re: Stus-List Tool recommendation Message-ID: <55010444.5040...@eastlink.ca> Content-Type: text/plain; charset="us-ascii"; Format="flowed" David: I will be brave to face a genetic engineer.....I suspect the 50-50 acetone ATF concoction has more to do with the 'acetone' than the 'ATF'. I said earlier last week that I thought it was Power Steering Fluid .......both are petroleum based......its the acetone....maybe the petroleum based additive gives us sense of comfort....think about it....most of us are more comfortable with a drop of 'oil' than a drop of 'acetone'. I think it is the 50 % acetone that makes this concoction effective.....it can be mixed with any petroleum product 50%-50% and do its thing. Rob Abbott AZURA C&C 32 - 84 Halifax,N.S, On 2015-03-11 11:41 PM, David Knecht via CnC-List wrote: > I never cease to be amazed by the information I get from this list. > This group has an amazittng array or talents and experiences, not > just in sailing but also in engineering, metallurgy, mechanics, > chemistry etc. etc. The only engineering I can provide advice on is > genetic engineering and I suspect there are not going to be a lot of > questions on that topic. Sigh! > I will be sure to report back on tools and bolts when I find what gets > this one off. I may buy a few wrenches just to see how well each > works in this not uncommon situation. My box of ratcheting wrenches > dumped over a while back and of course ended up in the bilge in salt > water. No more ratcheting happening there. > As to my real point- I had heard about 50-50 acetone ATF a long time > ago as a penetrant so I made some up to try for this experiment, but > found that the two are not miscible and phase separate almost > immediately. Is that expected and if so, which phase for the bolt? Dave >> > > Aries > 1990 C&C 34+ > New London, CT
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