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Wayne, you are correct in that aluminum panels have their greatest benefit for commercial art, and scuffing and priming are the most important issue to contend with. I have also read that William Whitaker has used Dibond or Alucabond (one of the aluminum laminate products) for some of his paintings. As a sign professional, I could offer some information on aluminum panels if you should require it. As an artist, I can't say that I have ever tried painting (with artist's oils) on aluminum, however, my experience with other mediums on aluminum is that it may be the best hard surface available if it is prepared correctly. One issue on durability, however, is that Dibond and Alucabond (these are the company names) are really just thin laminates of aluminum sandwiching PVC or styrene. One thing that I am not certain of, for archival purposes, would be the aluminum delaminating from the middle board. I have seen aluminum delaminate after many years in exterior applications due to poor adhesives and the enivronmental factor, however, I am not sure if there are any issues if the work is kept inside. I could contact my supplier to find out if anyone is interested.
David
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