IPC is in the process of developing a computer based training program (CDRom) to IPC-A-600. To visualize some of the defects described in the document, we are looking for some samples to photograph. While I'm sure no one out there has made these types of defects before ;-), maybe they know a friend who has. Any help you can provide would be much appreciated. Boards can be returned after they have been photographed. If you can help, please reply to [log in to unmask] 1. Waves / Wrinkles / Ripples in Solder Mask - samples of both tin lead fused and SMOBC baords with waves / wrinkles / ripples in solder mask- (several samples each) 2. Same as above - over conductive pattern 3. Same as above - not above conductive patterns 4. Wave / Wrinkle or ripple bridging across conductors 5. Wave or wrinkle that reduces solder mask thickness (thins down the mask) 6. LPI Solder Mask wrinkle - caused by stutter in the wave 7. Very thick solder mask - caused by wave / wrinkle, etc. where a chip component will sit - potentially causing tombstoning during soldering 8. Soda Strawing 9. Samples of soda strawing on SMOBC and tin-lead fused boards 10. Very long soda straw void 11. Some sort of contamination trapped in Soda Straw Void (like flux or fusing fluid - something visible?) 12. Slivers along the edges of gold plated tabs (from overetching) - these slivers need to peel up during a tape adhesion test. -------------------------------------------------------------------- David W. Bergman CAE Vice President of Technical Programs IPC 2215 Sanders Road Northbrook, IL 60062-6135 P 847-509-9700 x340 F 847-509-9798 email [log in to unmask] IPC's website www.ipc.org -------------------------------------------------------------------- ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################