I don't know what kind of printer you are using. But, usually the board pulls away "snaps-off" from the stencil. What type of stencil are you using? Do you have a slow snap-off option in your printer? > -----Original Message----- > From: Steffen, Don E [SMTP:[log in to unmask]] > Sent: Wednesday, September 22, 1999 12:24 PM > To: [log in to unmask] > Subject: [TN] Need to know > > Technetters > > I have a situation where I need the advice from the Technetters. I have an > assembly with HASL. In order to stay within the aspect ratio guidelines, I > must use a stencil that has a .0085 aperature opening, a 20 mil spacing, > and > I must use a 6 mil stencil. I tried this and when the stencil pulled away, > the surface tension pulled away the solder paste from the pad area. If I > were to go to a 5 mil stencil (which is outside the Aspect Ratio > guidelines), would this help me with keeping the solder paste on the pad > and > not on the stencil? Or is there another approach that I should consider > instead of going to another stencil thickness? Any help you can give me > would be appreciated > > Donn E Steffen > Senior Quality Engineer > VDO Control Systems > Auburn, IN 46706 > Phone (219)925-8887 > Fax (219)925-8710 > Email: [log in to unmask] > > ############################################################## > 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 ##############################################################