We used laser cut stencils  from KJ Marketing . For different densities ,
different shapes ( a part of shape can be extended outside body outline -
just to facilitate release of adhesive ) can be worked out.

Contact : 416-252-1061

I do not work for KJ marketing. I was impressed to use their transparent
stencil for prototypes and gluing applications. They are cost effective for
specific applications.

Ashok Dhawan P.Eng.
Unisys Canada Inc.
Winnipeg Canada

-----Original Message-----
From:   Gary Camac [SMTP:[log in to unmask]]
<mailto:[SMTP:[log in to unmask]]>
Sent:   March 18, 1999 1:41 PM
To:     [log in to unmask] <mailto:[log in to unmask]>
Subject:        [TN] Assy: Stencil Printing Adhesive for 0603 Components

Hello all,

Is anyone out there stencil printing SMD adhesive to populate 0603 parts?  I
would be interested in hearing of your experiences.
The way I have it calculated is that I have 0.020" between pads.  With a
0.010" aperture I have a whole (dripping sarcasm) +/- 0.005 to play with.  I
don't know...but when you take into account stencil alignment accuracy and
adhesive squeeze out after the part is placed, this just doesn't seem
destined to become a six-sigma operation.
I realize a smaller aperture would help, but I am already concerned with how
consistently the adhesive will be removed from the apertures during
clean-up.
Thanks,
Gary Camac

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