[TheForge] Permalac

[Peter Fels & Phoebe Palmer]

Once there's live rust under a finish in a damp 
place..that's usually that, and it'll lift the finish in 
time...Unless you chemically convert the rust to a more 
stable form...and functionally, that's iffy.
Iron expands a whole lot as it rusts.
Think it was designed mostly for Cu alloys.

Andy Gladish wrote:
> In my case it proceeded to rust badly, within a couple months, through two 
> brushed coats. I don't have spray equipment and I like hand brushing, spent 
> some years painting wealthy peoples' homes. I thought I did a good job 
> degreasing with acetone....
> Used it over light rust on a gate and it seems to be alright, mostly- but it 
> sure hasn't lived up to what I was told about it...will have to take it up 
> with the maker, perhaps I missed something crucial.
> 
> --------------------------------------------------
> From: "Cindy and James" <jallcorn at suddenlink.net>
> Sent: Friday, August 13, 2010 5:41 AM
> To: <theforge at mailman.qth.net>
> Subject: [TheForge] Permalac
> 
>> Re the comments on Permalac .  If the patina/finish is thick, as in
>> crusty, etc. for lack of better term, SPRAY the permalac using multiple
>> coats to penetrate and seal the patina.
>>
>> Many patinas are extremely fragile and must be treated with much care in
>> the sealing/lacquering process.  I have found this out via experience.
>>
>> James
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