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No adhesion of top coat to etch-primered aluminum

Pl suggest for the same, Thanking you,

Tushar Kathrecha
Business - Rajkot, Gujarat, India
2004

I am coating an Aluminium Block and coating it with Etch Primer and a top coat on it(rubber based). There is no as such pre - treating done just a little sanding and cleaning it with solvent. I am not able to get adhesion on it at all. The paint peels like a potato peel.

If the aluminium alloy is suitable for anodizing then you could go for a deep etch, instruct the anodizer not to seal the work and thus you have a porous film which will provide an excellent surface for the rubber based paint to adhere to.

Robert Fyfe
Audio Eng. - Wyoming, NSW, Australia
2004

Hi,

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