I have read elsewhere that water-reducible primers do not work well on
metal. Re the topcoat peeling off, I cannot find any report of such
on the boat builder's newsgroup (hasn't occurred on my fiberglass test
parts). But, I can't say System Three is better. The only possible
advantage is the clearcoat step, which might produce a better gloss
after rubbing/polishing (but haven't compared the two -- stuff's too
expensive for just testing!).
Regards,
Fred F., A063
> I abandoned System III when I discovered layer separation on some of the
> metal parts that I had sprayed with it after about a year. I ended up
> stripping all of those parts back to the primer and repainting. The paint
> failed between the System III primer and the System III top coat. I have now
> switched to Poly Fiber for all of my filling/priming/painting and believe
> me - that stuff sticks to anything. You can also get a really good finish
> with Poly Fiber top gloss if it is rolled on and cut back by hand.
>
> Tony
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