how to make galvanised metal rusty

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Old 09-06-02, 06:34 PM
Berry Mutton
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how to make galvanised metal rusty

Hello;

I need to make new galvanised metal roofing rusty. It is for a theatrical affect. It has to work fairly quickly - like, within 24 hours. Thanks

Berry
 
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Old 09-06-02, 08:52 PM
S
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I cant think of any real thing you could do on short notice,, except maybe get some spray cans of red primer. dont paint all of it solid skimp on some to make it look patchy. Maybe get a bit of grey to blend in a bit. Primer is brown about the color of rust and dries fast.
 
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Old 09-07-02, 05:44 AM
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I wanted to add something, use a piece of scotch brite and scuff first and wipe down with vinegar before painting. It gives a bit of a surface etch to galvanized.
 
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Old 09-07-02, 05:37 PM
NutAndBoltKing
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I've seen it done for the restoration of antiquities - but it's not overnight - sandblasting and beltsanding.
 
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Old 10-31-04, 07:04 PM
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Muriatic acid

In a very well ventilated location.

Muriatic acid is commonly used in swimming pools and is readily available from pool supply houses as well as some grocery stores. Use it to remove the zinc galvanizing. The rusting should occur fairly quickly in a moist environment after the zinc is removed. A light coating of rust should form within a few hours.
 
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