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Pot Metal......clear coating????  Rate Topic 
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 Posted: Mon Dec 9th, 2019 10:07 pm
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Rick Padron
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I have an item that has fine line cracks in the pot metal. Is there a clear coating like polyurethane (oil or water based), or similar that could slow down future deterioration??

Last edited on Mon Dec 9th, 2019 10:08 pm by Rick Padron

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 Posted: Mon Dec 9th, 2019 10:41 pm
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Lane Shirey
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Rick, I’ve restored  chandeliers that had elements that looked like that. If you can clean the inside and apply a coat of epoxy, that might help to reinforce the piece. I’ve satin clear coated pieces like that too but I don’t think paint has the ability to bond it. It might help to seal out moisture though. 

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 Posted: Tue Dec 10th, 2019 01:18 pm
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Geoff Dunaway
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  I would strip all paint off of that piece and J-B quick those cracks then sand back down. The cracks don't travel vertically through the thickness of the casting but horizontally under the surface where eventually small surface chunks begin to fall out as the casting disintegrates. Downside: it is time consuming. Alternate solution : aluminum recast & it's fixed for generations to come. :up:

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 Posted: Tue Dec 10th, 2019 01:48 pm
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Chris A. Campbell
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Geoff has a great idea.

I have been working with a vacuum chamber using resins, silicone, and ceramics and your question along with Geoffs idea got me thinking.

Wonder if pot metal submerged within a 2 part epoxy or resin mixture vacuumed would help stabilize.  It works on wood. Feel certain all the cracks would be filled. Challenge is finding something fluid enough to flow, large window on set time, and bonds strong enough to stabilize.


Aluminum recast would likely be better approach and can be done by yourself with the low melting point.




 



Last edited on Tue Dec 10th, 2019 02:19 pm by Chris A. Campbell

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 Posted: Wed Dec 11th, 2019 01:38 pm
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Rick Padron
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Go do I go about having an aluminum recast? Who can you refer me to? Thanks Geoff.

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