Dave, I've used a white ink pen from Panduit (Part Number PX-10). They come in a box of 12. But they are kinda high in price. Last price that I paid was $6.50 per pen. But the pen does write white and should do the job for you. Bill Kasprzak Moog Inc. ################################################################ 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 ################################################################