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

[Bill Effros]

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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