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clear coat
Eric,
The only time I've had problems with an epoxy coat was when I tried to seal the opaque color with an non epoxy clear coating. I now use only a thinned epoxy sealer/primer, then full mixed epoxy to finish. From what I've observed the acrylic paints dry hard as nails and provide a very durable finish (think house paint) but are still a form of plastic. I have not had very good results in using exterior acrylic clear finishes ( Minwax polycril etc.) The water based clears do not hold up as well as the oil or oil modified finishes...I wish they would. I am very interested in your problem but can on rely on empirical knowledge as a guide and without the chemistry I do not think there is a suitable answer. I would suggest foregoing the clear coat and try the epoxy.
Ed
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