Ernie, Over the years we have not been able to tent holes unless we are able to keep .012"-.015" of film around each hole. If we have a constant tent breaking problem it is usually because the design does not give us this clearance. With the proper amount of clearance I haven't had a problem. Doug Jeffery Electrotek, Inc. You wrote: > > We seem to have an issue with tents breaking on large > holes ( .180 to .250 dia. ) as well as slots, typically .118 x .250. > No matter whose film we have tried, the tents break. It is not always > every panel, nor every lot. We have an idea that it may be being > caused by the developer. Has anyone out there wrestled with this > problem, and if so how was it resolved. To switch to secondary drill > would just impact that departments output Any help will be deeply > appreciated. > > Ernie Smith > Electropac Co. Inc. > > e-mail to [log in to unmask] > > or on the technet > >################################################################ >TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. >For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 >################################################################ > > ################################################################ TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################