I've seen a lab where they used an air driven dentist's drill very, very effectively to excavate down the layers to the track. The amount of control is phenomenal - think of how a dentist can do really delicate work :-( Andy Kowalewski NEC America ____________________Reply Separator____________________ Subject: [TN] Cutting through an inner trace Author: Matt Cirineo <[log in to unmask]> Date: 11/3/99 2:27 PM Other than drilling, has anyone used an alternative method of cutting through an inner layer trace? I'm thinking of methods such as laser, water cutting,... Your comments and suggestions would be greatly appreciated. Matthew Cirineo Operations Engineering Primex Aerospace Company phone: 425-885-5010 x4855 fax: 425-895-4310 ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ############################################################## ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################