Samantha, Touch up of defective photoresist images is typically not recommended by most resist suppliers. It is tough to effectively repair most of the work being imaged today; while repair of defects in the 5/5 mil or less range is an art form. Frequently, the additional handling of developed panels or innerlayers causes more damage than the touch up repairs. This is a case where an ounce of prevention is worth a pound of cure... thorough cleaning of phototools, vacuum frames, and laminated panels/innerlayers should be done to prevent photographic defects. Still, in the real world, there are times when resist touch up is acceptable, (in FA situations, for instance, or when the only alternative is scrap). In the case where touch up is unavoidable, I recomend the following pens: Kimoto Pake super density retouching pen (red). This pen will survive Alkaline clean, microetch, developer, acid/alkaline etch, preplate clean and plating. Kimoto Pake super density retouching pen (black) will survive all of the above conditions, except preplate clean/plating. Both pens are available in a variety of tip sizes (Super fine, Ultra fine, Fine, and Medium). Both pens air dry in about 10 to 15 minutes. You can get them from: Tobe Graphics PO Box 40635 Raleigh, NC 27629 Phone: (919) 850-3333 You may also be able to get them (or something similar) from the E. W. Dorn Company. Hope this helps. Let me know if I can be of further assistance. Mark Dowding Regional Technical Specialist Insulectro 909-943-5758 *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * 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] * ***************************************************************************