Techies, A few years ago, Polyclad came out with a Excel based calculator for their PCL CF 400 resin coated foil product, which gave an indication of how much resin was required on the coated foils to ensure good buried via hole fill and encapsulation and was dependant on diameter and number of holes to fill. Does anyone have anything similar for normal prepregs, and the hole fill capability? Regards Colin Colin W.T. McVean M.Inst.C.T Production Manager Artetch Circuits Ltd (www.artetch.co.uk) Direct Dial 01903 712926 Switch Board 01903 725365 Skype: colin.artetch 40th Anniversary 1967 - 2007 P Before printing , please think about the Environment --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------