Properly done, powder coat is near indestructible. However, the key
is proper surface prep (cleaning, phosphating, drying, etc.) and also
the baking out process. Too hot or too cold will adversely affect the
properties of the finished coating. In addition, the TYPE and QUALITY
of the powder matters. There are different types of powders (epoxy,
polyester, blends, etc), and each has different properties for
different applications.
I had all our external wing bits coated with gloss white powder and
it's just great stuff. I did alodine them first, and they also went
through the 5 stage wash process before coating at the company that
did it. I don't expect to have problems with it.
Chris
> I'm not entirely convinced by the [powder coating I've seen. It
tends to
> chip off very easily, so I think I prefer a more resilient 2 pack
paint
> system ie urethane. However,it could be that preparation is the key.
Doing
> it yourself and using shot peening first might make a big difference
> Graham
>
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