[Rhodes22-list] Penetrol on metal-Robert, Brad

[Brad Haslett]

Bill,

Did a search on Penetrol + linseed oil and stumbled across this from
the R22 list-

http://www.geocities.com/blew_skies/tillvarn.html

According to the Flood Co's website factsheet on Penetrol, it does not
contain linseed oil.  Of course they wouldn't want you to buy a
cheaper substitute for their product, would they?

Brad

On Thu, Dec 18, 2008 at 8:54 AM, Bill Effros <bill at effros.com> wrote:
> Ed,
>
> I am in the middle of setting up my 2009 computer files, so my complete
> R-22 files are not at hand.
>
> There were a number of excellent Penetrol discussions in the past
> centered around adding Penetrol to varnish in varying proportions to
> take advantage of the penetrating quality of Penetrol and the ability of
> good varnish to provide a base coat that did not sag.  The chemists in
> our midst recommended precise Penetrol percentages decreasing in
> succeeding layers until the finish coats contained no Penetrol and
> consisted solely of 100% top-grade varnish.
>
> There was a guy who spoke of using this technique on old telephone
> booths for the telephone company.
>
> Razz provided a number of how-to postings.
>
> Some said Penetrol was mainly linseed oil, and that linseed oil did just
> as good a job at a fraction of the price.
>
> Can you help point people to some of these discussions?  Don't trust my
> "facts" above -- it's all coming from memory.
>
> My memory...and it ain't what I think I remember it used to be.
>
> Bill Effros
>
>
>
> Joe Babb wrote:
>> Robert, Brad,
>> I've used Penetrol on steel for several years now.  In addition to being
>> an electronics engineer, I am an artist blacksmith and make decorative
>> ironwork and sculptures for the home.  I have found Penetrol to be a
>> very tough long lasting finish just by itself. But if I use Penetrol for
>> the base coat and Rustoleum clear coat over it, the finish becomes very
>> durable indeed.
>> I finished one sundial with two coats of Penetrol and set it outside as
>> a test.  It lasted at least 2 years before rust started in.
>>
>> I have found that Penetrol is very thin, which is a good attribute as it
>> gets into cracks and crevises that spray enamel never would.  The
>> downside is that I have to babysit the stuff for 30 minutes to catch
>> drips because it is so thin.  You don't want to let those drips harden
>> because they are very difficult to remove without forming a blemish in
>> the finish.
>>
>> I've also mixed a little Penetrol with oil based paints with good
>> success for spraying.  I'm getting ready to build a little plywood dingy
>> according to one of Bolger's plans called the Elegant Punt.  I thought I
>> would try using Penetrol as a sealer before I finish with oil paint.
>> We'll see how it goes.
>>
>> I am inexperienced with fiberglass so I have been very interested in
>> this thread on Penetrol.  I didn't realize it would work so well for
>> that application.
>> Joe
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