Homebrew PCBs

I found this http://youtube.com/watch?v=4L9rVcPmBMI. If you view his
videos, just ignore the guy, he could be annoying with his sales pitch.
and this is their site.http://www.etch-o-matic.com/stencils.htm

I'm just curious how the letters specially something like "O"s kept
it's shape. I have done stencils with t-shirts before handcut, and I
usually leave off a little notch to keep the central part. Given the
video uses photoprocess, but how. I'm guessing there's actually a
screen embedded in that stencil, before processing.

I just mentioned this because from the limited information I got from
the videos, it could be good for solder paste stencil in the case of
someone that do smd at home.


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