>Steve, Let me clarify my earlier statement. When I said "base laminate" I was referring to "base laminate copper". So, pits that start there are not caused by etch-resists. More likely it has to do with gassing, residues, or air saturation. Clear as mud now? Mark >Hi Everybody! > >If you go back to: > >http://www.driveway.com/share?sid=e25a88c4.8e904&name=Pictures > >I did what Franklin Asbell suggested. I took one of the boards and using an >exacto knife, carefully scaped things away to see how deep things went...and >I took a series of pictures as I went... > >pitscrape.jpg - Starts off just getting into the trace with all the solder >mask off. > >pitscrape2.jpg - Is about 1/3 the way into the trace, and the pit into the >middle is getting smaller, which tells me I'm starting to get to the bottom >of that one. > >pitscrape3.jpg - Is about 2/3 into the trace and the middle pit has almost >disappeared, and the other two are starting to bottom-out as well. > >pitscrape4.jpg - Shows that I was able to keep scraping and removed the pits >in the traces...trouble is, there's not much copper left in the trace beneath >the pits... > >Just thought ya'll might want see how deep things got...and from the >explanations I got from everybody, I'm still somewhat confused...some say >that if the pit doesn't go all the way down to the laminate then is was a >etch resist problem, but then others have said that if they don't go all the >way down, it's from bubbles attaching to the traces during plating...or have >I just confused myself? > >Thanks again!! > >-Steve Gregory- --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------