In response to Phil Nutting's inquiry, we have experienced loss of black dye from anodized heat sinks when they were washed in an aqueous system using saponifiers. Dennis Guy-Sell Quality Engineer EDO Electro-Ceramics 2645 South 300 West Salt Lake City, Utah 84115 Phone 801-486-7481 ext. 219 Fax 801-484-3301 Email [log in to unmask] --------------------------------------------------------------------------------- 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 To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives 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 ---------------------------------------------------------------------------------