thanks for the response. I use a coordinate measuring machine and measure four corner points on the photo tool. At first, I get the dimensions of the master film (X1,X2,Y1,Y2) and then compare this with the dimensions taken from the contact film. The contact film always show about -30 to -40 micron reduction in length. Marco ---------- > From: drilbert <[log in to unmask]> > To: [log in to unmask] > Subject: Re: [TN] Photo tool stability > Date: Wednesday, May 20, 1998 11:34 PM > > What is your measurement method? > Marco Biagtan wrote: > > > > Hi Guys, > > > > I have a problem with dimensional stability of photo tools. The photo > > tools shrink after processing. I've tried increasing the drying > > temperature (50-55C) just so it will not shrink but it still does. This is > > really giving me a headache. Any suggestions? > > > > Marco Biagtan > > NEC-CPI Process Engineer. > > > > ################################################################ > > 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 > > ################################################################ > > ################################################################ > 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 > ################################################################ ################################################################ 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################