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IRZ archive, page 20.

3D-printed earth walls at IAAC's Forest Campus in Collserola Natural Park

The printer is fast. The earth refuses to keep up

3D printing can turn local soil into a building, but the robot only automates deposition. The difficult craft moves into mix design, drying, toolpaths and construction details.

Prusa Research illustration for version 1.1 of the Open Community License

Prusa opens its designs, but not the market

OCL v1.1 lets non-commercial users modify and share, but blocks commercial replication by default. Its new plugins only add more conditions. Under OSHWA’s definition, this is not open-source hardware.