Paul, It's been a couple of years ago but the following SMT glue printing process worked very well. The stencil was .010" thick stainless steel using oblong (oval with straight sides) apertures at the mid point of the passive components. The aperture was such that the ends of the glue deposit extended .010" or so past the sides of the components, after placement. The width of the aperture was 1/3 (if memory serves, it may have been less) the distance between the inner edges of the pads. Since the printer used didn't use vision, registration was accomplished by printing a "perfect" board, curing it, then using the cured deposits as a visual indicator of proper registration- since it's pretty tough to see through the stainless steel. I realize transparent stencils are available now but good ol' stainless is a whole lot cheaper and it worked well. Larry Morse Celwave RF [log in to unmask] ------------------------ INTERNET MAIL ------------------------ From: "Paul Stolar"<[log in to unmask]> Subject: Glue Date: Thu, 10 Jul 97 17:38:06 -0600 --------------------------------------------------------------------------- Who out there is applying glue with stencil printing? I would like to know: 1. What type of stencil? 2. What brand of glue? 3. ANy other special concerns? 4. What problems can I expect? I am already aware of Loctite's process. I would like to talk with people who are either using that process or competitive processes. *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************