InformationFirst smelting experiment was shown in the prologue of BlazBlue: Phase 0. It happened on December 31, 2099, in the First Area, when Relius Clover and Shūichirō Ayatsuki were making Kusanagi by Yūki Terumi’s request. They were using a Blue Grimoire, the Zeroth Prime Field (第零型素体 Dai Zero Sotai) and a Murakumo Unit, but their Kusanagi went unresponsive before it was completely purified, and then the Black Beast appeared out of the Kiln, and the experiment ended in failure as the Prime Field was lost because of the Beast.
Another experiment was shown in the opening of BlazBlue: Calamity Trigger. It happened on December 25, 2194, in the 5th Hierarchical City of Ibukido, when the 7th Agency attempted to create a Black Beast to fight the World Void Information Controlling Organization with it. The heart of this Beast was supposed to be Mu-12, and the body was Hazama. This experiment also ended in failure, since Takamagahara disliked the idea of a new Beast rampaging in the world, so they used their Event Weapon, Highlander: Takemikazuchi, to destroy Ibukido. In some timelines, this blast killed Mu, but in other ones the girl was saved by her cocoon, and the Origin used the blast’s energy to recreate herself in Mu, who was later found on the burning fields of Ikaruga and adopted by the Vermillion family as “Noel Vermillion”.