Homebrew PCBs

In another current threads, I saw a number of people say that they make
their own parts/components including the PCB footprint.

Wondering if anyone of you would be kind enough to make a screencast
video-tutorial, showing / teaching how exactly you do it, i.e. how you
translate the footprint from data-sheet into a new component for your
personal library.
Instead of Eagle, if someone chooses to do it in KiCad, that might be well
enough as well, since having used both a little (still a n00b level usage),
I see quite a few similarities, so I am hoping that with a little more
efforct, I could do the conversion on my own.

thanks,
bd


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