Smallest Scale Autonomous Republic

Oooh, I know you're scared. Autonomous republic? Do you want to go to war?

No. We're talking about a republicOS, an republic that is based on open source, collaborative development as its core operating principle, as carried out by integrated humans.

We predict that boundaries in an enlightened world will disappear, as people learn to become Integrated Humans. The natural state of organization will thus become governed by bioregionalism, as nature recovers and humanity finds a collaborative place within nature.

Using Open Source Microfactories and Open Source Material Production Facilities - what are the practical limits of what can be produced easily on any parcel of land?

Lumber, concrete, and metal are relatively easy to produce. Not so easy for steel production from ore. See Steel Production. But quite possible for steel from scrap. Aluminum is easy to produce locally, as many places have clay. Semiconductor silicon is possible, wherever there is sand.