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Author Topic: Brass - preparation for painting  (Read 2895 times)

boatmadman

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Brass - preparation for painting
« on: March 12, 2007, 01:17:14 PM »

Hi,

What is the best way to prep brass for painting to stop all that paint chipping off 2 days after the job is done?

Thanks

Ian
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gribeauval

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Re: Brass - preparation for painting
« Reply #1 on: March 12, 2007, 01:23:07 PM »

Go to your local model railway shop and buy an 'etching primer' that they use for painting brass loco kits. ;)

Mike
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HS93 (RIP)

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Re: Brass - preparation for painting
« Reply #2 on: March 12, 2007, 01:23:33 PM »

This is what you need for it to stay on, as used by steam train enthusiasts


PQ1
 Single Pack Self Etch Primer (for all non-ferrous metals)


 http://www.phoenix-paints.co.uk/sundries.asp

Peter
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HS93 (RIP)

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Re: Brass - preparation for painting
« Reply #3 on: March 12, 2007, 01:25:48 PM »

sorry to duplicate gribeauval ,but if you look at the times I was posting as you where  Peter
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boatmadman

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Re: Brass - preparation for painting
« Reply #4 on: March 12, 2007, 01:29:29 PM »

Thanks fella's, much appreciated.

Ian
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gribeauval

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Re: Brass - preparation for painting
« Reply #5 on: March 12, 2007, 01:30:50 PM »

sorry to duplicate gribeauval ,but if you look at the times I was posting as you where  Peter

Duplication doesn't matter just so long as the information get passed on!! ;)

Mike
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barriew

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Re: Brass - preparation for painting
« Reply #6 on: March 12, 2007, 03:26:02 PM »

I understand that this stuff has very limited life, so make sure its fresh ;)

If your local model shop doesn't stock it, Squires do.

Barrie
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Subculture

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Re: Brass - preparation for painting
« Reply #7 on: March 12, 2007, 09:07:04 PM »

You can also dip the brass in a bath of ferric chloride (the stuff they use for etching PCB's). This chemically etches the surface and will allow any primer to stick to the brass like the proverbial to a blanket.

This works well with other metals too.

Cheaper than buying etch primer, and no limited shelf life.

Andy

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Re: Brass - preparation for painting
« Reply #8 on: March 13, 2007, 08:56:54 AM »

Working mostly in brass I know that problem.
Small items will be cooked out (if they are soldered) in an old pot.
Bigger items will be cleaned with an old, hard toothbrush and an abrassive cleaning-agent (sorry, don`t know the english word for it) which will be used mostly in the kitchen. Flush it with the shower and dry it with an hair-dryer, as the oxyde will return within 15-30 minutes. Then spray it with an primer, which includes zinc (available as spray-cans in car-shops). This will do a perfect job- never had a problem with t´hat and some of my boats are 15 years old.

Jörg
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