We are having trouble soldering organic protective coated bare copper boards. The difficulty is occurring with manual iron soldering in the post wave/wash shop. The boards soldered fine in SMT, and then they were washed. They then sat several weeks awaiting finalization of engineering changes and receipt of the EC parts. Now we are having extreme difficulty getting the solder to wet to the copper in the postmount shop. Does anyone have suggestions to overcome this problem? Would it be feasible to recoat the bare copper when it's determined the boards cannot be completed immediately? Does anyone have a suggested time limit in which to complete soldering after the wash? Does anyone know of aggressive flux cored solder wire which can promote wetting and still meet Bellcore specifications? Any advice would be appreciated. Allen Ahlert [log in to unmask]