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Posted by Richard on April 11, 2008, 5:39 am
Please log in for more thread options On Thu, 10 Apr 2008 12:58:19 -0700 (PDT), pete
>>
>>
>>
>>
>> > :Jerry: wrote:
>>
>> >> <snip>
>> >>>> wd 40 will hold moisture ...
>>
>> >>> Cheers for that, I really appreciate your advise. It makes sense
>> >>> about WD40 and the amount of condensation in the workshop sending
>> >>> tings rusty. I'm not so worried now.
>>
>> >> Hmm, first time I've ever heard that said about WD40, considering
>> >> that
>> >> it was designed primarily as a water dispersant for electrical
>> >> circuits etc. In fact it's first use was in the USA space/defence
>> >> programme as a water displacer and corrosion inhibitor...
>>
>> >> Now I don't normally suggest that people read Wikipeadia, do to the
>> >> gross unreliability of the facts contained within (due to the
>> >> policy
>> >> of allowing anyone edit without first proving their knowledge) but
>> >> this brief page on WD-40 is very close to the fact that have been
>> >> known for over 40 years -http://en.wikipedia.org/wiki/WD-40
>>
>> >> I suppose what might be the problem is the cheapo imitations that
>> >> are around that claim to have some of the same properties as WD-40,
>> >> many of these do indeed contain a high degree of water as they are
>> >> not actually marketed as water displacers, being just penetrating
>> >> oils instead. The other problem is, as Trevor has pointed out,
>> >> WD-40 is very good at removing other oils too...
>>
>> > I think the problem lies in the fact that as WD-40 is a water
>> > dispersant, it seems to do this by forming a
>> > solution/mixture/emulsion with the water, everything else evaporates
>> > fast leaving just the water behind.
>>
>> No, it doesn't leave the water behind, if it did that it wouldn't be a
>> water dispersant!
>>
>>
>>
>> > I use WD-40 only when I need a solvent, not a lubricant -
>>
>> <snip>
>>
>> I only use WD-40 when I want to remove water from hard to reach areas,
>> when I need a solvent I use a solvent <g>...The problem with WD-40 and
>> rusting is because the solvent it contains also removes any oil that
>> is coating the part, if you need to protect from corrosion after
>> dispersing water you need to either recoat with oil or some other
>> sealing agent.
>
>What about using 3 in 1 oil? Pete
As poor quality varnish goes I do find it exceptionally slow
drying....
Richard
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