The material is most typically stainless.  Cost varies by vendor and
technology.  I used to quote an average of $500 n.r.e. per stencil.  This
covered the cost of a chem etch stencil without shocking the customer, and
was very close on the few laser stencils I purchased.  Local vendors exist
in most regions.  Aperatures are created by a variety of processes
including; chemical etching, laser cutting, die punching (esp. plastic),
and electroforming the stencil over a positive "mold" of the aperatures.
 All these methods work well for somebody, otherwise the product with no
sales would disappear from the marketplace.  Same day turn / next day
delivery is a reasonable lead time request.

Regards,
Brad Vanderhoof

-----Original Message-----
From:   Ed Cosper [SMTP:[log in to unmask]]
Sent:   Tuesday, July 14, 1998 9:21 AM
To:     [log in to unmask]
Subject:        [TN] solderpaste screen

Hi all,

I have a few  quick questions regarding solder paste stencils.

1. What do most of you use as a stencil? I've seen what appears to be a 6
to 7mil aluminum type material when I visit our
     customers. Is that somewhat standard.

2. What is the cost of a typical paste stencil?  What could I use a
guideline to determine what one will cost?

3. Where can I get them? Is there any located in the Oklahoma, Texas or Mo.
Area?

4. What process is used to generate the clearances on the stencil. Are they
etched or machined?

5.  What are standard lead times for a Stencil. Any help would be
appreciated.


Thank you,

Ed Cosper
Graphic Electronics Inc.
Tulsa OK

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