Carving officially began on June 23, 1923, with Borglum making the first cut. At Stone Mountain he developed sympathetic connections with the reorganized Ku Klux Klan, who were major financial backers of the monument. Lee's head was unveiled on Lee's birthday January 19, 1924, to a large crowd, but soon thereafter Borglum was increasingly at odds with the officials of the organization. His domineering, perfectionist, authoritarian manner brought tensions to such a point that in March 1925 Borglum smashed his clay and plaster models. He left Georgia permanently, his tenure with the organization over. None of his work remains, as it was all blasted off the mountain's face for the work of Borglum's replacement Henry Augustus Lukeman. In his abortive attempt however, Borglum had developed the necessary techniques for sculpting on a gigantic scale that made Mount Rushmore possible.