|PIERRE COURBOULEIX||16/10/2009 13:26:34|
|4 forum posts|
A simple question (?). May be of some interest to all of us!
How to pepare a brass part to be painted.
What kind of surface preparation before coating,
What kind of primer to use ? ? ?
Thank you for your kind reply
Pierre Courbouleix - F75015 PARIS
|365 forum posts|
The following advice is to be found at:
Brass, copper, aluminium and nickel silver, in fact all non-ferrous metals should be etch primed before applying any subsequent coats of paint. These metals have an oxide layer which paints do not adhere to very well. Even if abraded with abrasive paper, the oxide layer reforms within 2 or 3 seconds!! Etch Primer has an acid in it to microscopically eat through the oxide layer and into the metal thus providing a key for the paint.
|The Mad Professor||09/11/2009 21:34:18|
|6 forum posts||I have found that putting a thin coat of genuine shellac in methylated spirits onto the clean aluminium, brass etc, and letting it dry, provides a good surface for the paint to stick to.|
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