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how do I finish metal parts?

 
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jp-90



Joined: 07 Sep 2011
Posts: 124
Location: Austin, TX

PostPosted: Wed Aug 16, 2017 5:17 pm    Post subject: how do I finish metal parts? Reply with quote

I made a few parts for my current project out of 18ga steel sheet from the hardware store--just a pickup surround and a switch plate. I like how they look when buffed out--somewhat shiny, but far from chrome. How can I preserve this look?

If I don't put anything on them, they'll get somewhat of a patina and will have at least a little rust show up pretty quickly. One person recommended boiled linseed oil, but I'm worried it will get gummy and stick to the nitro top coat permanently. I was thinking maybe just a thin coat of paste wax would do. Suggestions?
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Lon



Joined: 30 Dec 2003
Posts: 6086
Location: Stephenville, TX

PostPosted: Thu Aug 17, 2017 7:28 am    Post subject: Reply with quote

For years, hardware companies have used nitro as a clear coat to keep their items from either tarnishing ( brass/copper) or rusting (steel). A couple of coats should do it.
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jp-90



Joined: 07 Sep 2011
Posts: 124
Location: Austin, TX

PostPosted: Thu Aug 17, 2017 11:36 am    Post subject: Reply with quote

That makes sense. Thanks for the tip, Lon!

Would you suggest coating the metal, then sanding/buffing similar to a guitar clear coat finish?
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Kregg



Joined: 22 Apr 2008
Posts: 3334
Location: Atlanta

PostPosted: Thu Aug 17, 2017 1:05 pm    Post subject: Reply with quote

Rust-o-leum and Duplicolor both sell metal topcoat sprays.
My dad used to clear coat metal parts with shellac.
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jaybones



Joined: 22 Mar 2014
Posts: 429

PostPosted: Sun Aug 20, 2017 1:08 am    Post subject: Reply with quote

Can also do clear powder coating, but I'm sure that would be more equipment and harder than a rattle can of clear or Rustoleum.
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jp-90



Joined: 07 Sep 2011
Posts: 124
Location: Austin, TX

PostPosted: Sun Aug 20, 2017 10:07 am    Post subject: Reply with quote

Thanks for all the suggestions!

I thought about using shellac, but ended up spraying two coats of clear lacquer on the parts. They look fine without any polishing--we'll see how it holds up.
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pattycakes77



Joined: 17 Jan 2008
Posts: 2093
Location: Cedar Rapids, Iowa

PostPosted: Sun Aug 20, 2017 5:02 pm    Post subject: Reply with quote

I used a product called Glisten PC awhile back on some wheels. It's basically clear POR 15 but hard as nails. You could thin and spray it or brush it on.
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ladyfinisher



Joined: 21 Feb 2013
Posts: 400
Location: California

PostPosted: Sun Aug 20, 2017 9:52 pm    Post subject: Reply with quote

Wipe New. We use it on our aluminum bus siding. It probably is a wipe on poly. It works great on metal. It isn't really shiny, but protects it from wet.

Ladyfinisher
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