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July 1998

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 6 Jul 1998 15:55:13 EDT
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In a message dated 7/6/98 9:39:42 AM Pacific Daylight Time,
[log in to unmask] writes:

> Johannes,
>
>  I have tried this type of stencil.  It was made by a company in Canada
>  called KJ Marketing.  It worked extremely well.  The material is laser cut,
>  and as a result of the heat from the Laser the walls of the apertures are
>  perfectly smooth.  The release of paste was outstanding.  It performed as
>  well or better than a pure nickel stencil.
>
>  Alignment was made easy due to the ability to see through the stencil.
>
>  The material can be melted down and used again, and it does not stretch as
>  much.
>
>  You should try it out yourself and see what you think.
>
>  Thanks,
>  Kathy Palumbo

Hi there Kathy!!

     How was everybody's 4th? ('cept for the poor people in Florida, I heard
on the news how yours was...bummer, I hope things get better for ya'll!)
Anyways about these polyimide stencils I've been reading so much about here
lately, I got a couple of more questions before I try one:

1. Do you spec these in just like stainless ones? I mean like the thicknesses
ect....is there a max and a minimum thickness?

2. Have you found that you need to change things a little because of the good
paste release? For instance I found that when I first went to metal blades I
needed to spec one mil less stencil thickness because I didn't get ANY scoop-
out anymore...anything along those lines with this polyimide?

3. I'm assuming that the whole kit and kaboodle needs laser cutting, no combo
stencils huh? Ya' know 50-mil stuff chem etched and the fine pitch lasered...

4. Price? Just ballpark it...I know Kathy as many stencils as you guys
probably go through you probably get a better price break than I would...

5. Do they hold up during ultrasonic cleaning?


     That's about it...(I think). You know, back when I first heard about
electroformed stencils I thought that we were just about pushing the limits as
far as stencil technology goes...but as Gomer would say; "Surprize,
surprize!!" then he would say; "Gollie, or; shazam!" (GRIN)

Thanks in advance!

-Steve Gregory-

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