Planer board Question

[Bduck]

Hey Bob, did you use a marine paint?

I did not.  I made 2 sets of these boards and the other set went to a buddy who was the manager of a general maintenance shop that had a paint shop.  That paint shop painted both sets and used a basic wood primer that was covered up with 2 coats of an exterior enamel paint.  The boards themselves are cedar.

My thoughts at first was an enamel paint. It appears holding up well against the elements. Did you use anything to treat the cedar prior to paint?