Originally Posted By CBY
Originally Posted By Gambalunga

It seems to me that the aluminium needs to be abrasive blasted before coating to give a key for the attachment of the coating.


If it is made of aluminium a first coat of dedicated primer for aluminium is needed.

I think they are powder coated so I don't think they use a primer coat, just a cleaning wash. In any case there was no sign of a primer having been used.

There is an article on the subject of powder coat adhesion here.

Peter

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