I'm not familiar enough with the alumina oxide process to comment on your questions, however, I do know an excellent general purpose resist. Morton Electronic Materials (Dynachem) has an exceptional product, called Laminar 5000. Some of the features are: Wide process window. Acid/alkaline etch Very good adhesion, even in gold plate applications Good tenting properties Excellent resolution Laminar 5000 is available in 1.3, 1.5, and 2.0 mil thicknesses. If you require further information, please contact me, or your local Morton or Insulectro sales representative. Mark Dowding Regional Technical Specialist Insulectro 909-943-5758 *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************