Vasil Levski (1837–1873) was one of the greatest national heroes of Bulgaria. He was a revolutionary leader who organized a secret network to fight for Bulgaria’s liberation from Ottoman rule. Known as “The Apostle of Freedom,” Levski believed in equality, democracy, and freedom for all people, regardless of religion or ethnicity. He was captured by the Ottoman authorities and executed in 1873, but his ideas and sacrifice played a key role in Bulgaria’s independence.

For best results, always use PLA with supports enabled (0.12 mm layer height, 3 walls, 20% infill). For reliable FDM printing, ensure proper bed leveling, good first-layer adhesion, stable extrusion temperature, and adequate cooling. It is also recommended to use a clean nozzle and a well-calibrated printer.