Lamination and/or relamination in a board shop was/is one of my favorite things. 90 plus % of the MLB structure is in the z axis where most folks don't often venture. CAD and CAM are wonderful tools reaching many parts of the shop. They do not reach or interface with the chemical world at all. Often, they do not affect the lamination part of the process as this, beyond progammable presses, is not part of the layup process. Typically, layup (wherein pregs and details come together in books) are manually driven by very conciencious process managers who stack every layer together right or wrong. Most often they are right. Do as you will, the window or side tabs take priority. Etched details (inner layers or inners) are laid up by folks paying attention to what needs doing. Designers and CAM folks see all the Gerber or ODB++ stuff, never missing a beat, then they send it on down the line, in most shops. via travellers or other paper driven stuff though many other shops have this information available for viewing on computers. Still, the operator is the key. MoonMan --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------