So.... The formulas I posted earlier (from the site: <A HREF="http://www.woodweb.com/knowledge_base/Installing_crown_moulding.html)" target="_blank">http://www.woodweb.com/knowledge_base/Installing_crown_moulding.html)</A> work perfectly for the miter settings (for both 38/52 and 45/45 crown). At issue are the bevel settings which stray significantly from published tables. Ahhh, but two cells away from the answer. regards