I had posted this question a couple of days ago; but the best solution in my case came from a co-worker
An "old school" technician that I work with went home and found an old blueprint eraser pencil. It's a pencil with an pale gray abrasive rod in the center, as opposed to graphite. Before I had gotten to work this morning he had already reworked three PCBs for me...and he couldn't wait to show them to me. Where there once was soldermask, there were shiny copper pads with almost no collateral damage or scratching of adjacent areas. He also looked for an old draftsman's eraser shield to help with the task; but he couldn't find one. I could only imagine the results being better if he did use a shield. I tinned the pads/holes by fluxing them and then running over them with a hot soldering iron and some solder removal braid that had been previously soaked in solder Hope this can help one of you someday. Chris Maxwell M.Sc Electrical Engineer Critical Imaging LLC - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
