Hi Greg:
Rust under powdercoat could be a result of the wrong choice of powder.
There are three types of powdercoat available, acrylic, urethane and I
can't remember the third, but I think it is a hybrid. Only the urethane is
waterproof.
John
>handling powercoated parts can be solved by fabricating holders or using the
>high temperature plugs and support pieces Eastwood mentions in their catalog.
>In my experience production powdercoating uses wire hangers to convey it
>through the powder coat booth and then to the oven. These were drawer slides
>for kitchen cabinets coated in the Grass America (Austrian Company) plant in
>North Carolina. I remember on a tour of the powdercoating line that the part
>could be lifted off the line without putting finger prints in the powder and
>during the curing the material flowed together. They were using a white and
>almond color epoxy based powder with good abrasion resistance since these were
>moving parts. The powder was initially imported from Austria but was
>eventually sourced from Glidden paints.
>
>I think the Eastwood system will be a boon to the hobbyist for small
>manageable parts. After all, those of us who ARE married, Barry, could buy a
>used range cheap and rig up a proper rack for parts that would fit in the
>oven.
>
>I have heard pros and cons on powder coated parts. A friend says that the
>coating holds together while the part under it rusts away....especially on
>trailer hitches. He's replaced hitches where the coating came off in large
>sections but the rust had traveled under the coating. Anyone had experience
>with this problem.
>
>Greg Wolf
>1970 GT6+ "Ian"
>Ann Arbor, Michigan
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