Oh this is awesome: http://members.efn.org/~itech/
A collection of "pubic domain" DIY tech for small farms and gardens, including a giant food dehydrator, small threshers, and small winnowers.
@Zuph I knew of another side alike but can't find the URL…
@Zuph and some more here:
but not the one I remember.
Instance de l'association G3L basée à Valence, Drôme, France