Just some old thoughts ... I suppose it is kind of a scary, uncontrollable thought, but we used to do the same technique for manually burnishing PdAg thick film metallizations for soldering, or conductive adhesive component attachment for hybrid applications back in the 70's. We did not use an electric eraser, however. That was back in the earlier days of fritted metallizations where the glass often came to the surface of the metallization, if the firing profile was not optimum. Only certain pink erasers were allowed. And due to operator skill, certain operators were only allowed to do it. A light touch, by a good operator, could make a lot of pain go away .... I am talking conductive wetting characteristics here. Some particularly nasty fritted PtAu's, or PtPdAu metallizations got hit with fiberglass brushes! Yikes! Even more scarey, but it worked. Once mixed bonded systems hit the scene, much of this went away, but you would be amazed at how a skilled operator could clean things up, and the part would be more reliable, or so it seemed at the time by passing all manner of environmental, PIND, and life tests. With the right operator, it could still be viable, but I probably wouldn't seek to do it on Production boards & Quantities. Nowadays, it is easier to plasma, or bring them back to supplier. For someone with a small board, or portion of board, that doesn't have access to a plasma cleaner, a light touch with a clean pink eraser just might clean things up, without taking off the plating. Actually, I have found that most cleanroom wipes are quite abrasive if you can rub them on a surface to be cleaned. Kind of tough on a PWB, however, as the wipe shreds to pieces quickly and really leads to all manner of particulates and fibers. Definitely not proposing the widespread use of an eraser either, but it may not hurt to be kept in mind for emergencies... Steve Creswick Sr Associate - Balanced Enterprise Solutions http://www.linkedin.com/in/stevencreswick 616 834 1883 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________