Watched the video, it looks really simple once you manage to make the
tiny adapter. Saved it to my piniterest page for future reference.
Right now I'm working with only 6 pairs so by hand will suffice.
I wonder if those portable (sewing machine) bobbin winders would work
with the technique too.
I have just found this demonstration of winding bobbins on a sewing machine
on Pinterest - it is in spanish (I think) but is easily understood. I don't
know how to 'shrink' the url, so iwill give you the long one and hope that
somebody will 'shrink' it for me.