We have just started using a dry film mask(Vacrel), which is about .003"
thick.  We are using a .006" stencil and printing .020" pitch parts, and are
measuring paste thickness of about .009".  We are using a metal squeegee,
but seeing some "dog ear" looks to the paste.  We seem to be getting a poor
separation of paste from the stencil.  The mask is about .0005" higher than
the pads.  Our variation in paste height measurements on a board has
increased by .002" from Photo Imageable to dry film.
   Are there any ideas on how to process a board with Vacrel to improve our
printing process?

Thanks for any ideas/suggestions.


Steve Quinn
Heurikon Corp
8310 Excelsior Dr
Madison, Wi   53717
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