Weichelt studied at Burg Giebichenstein University of Art and Design in Halle from 1979 to 1984 and earned a diploma in the Department of Metal Sculpture. From 1991 to 1996, she held a teaching position at the Institute for Art Education at Humboldt University in Berlin. Her artistic work was supported for many years by grant programs and scholarships from the Berlin Senate, the Käthe Dorsch Foundation, the Stift Neuzelle Foundation, and the Wiepersdorf Castle Cultural Foundation.

Weichelt has been featured in numerous solo and group exhibitions, including at the Winckelmann Museum in Stendal, the Gerhart Hauptmann Museum in Erkner, Neuhardenberg Castle (Brandenburg Art Prize), the Brandenburg State Parliament, as well as at Chorin Abbey and Babelsberg Castle. Other exhibition projects have taken her to Ritzebüttel Castle (Cuxhaven), the State Museum in Schwerin, and the Museum für Kunst und Gewerbe in Hamburg, among other venues.

Work Title: Schnitt B.
 
Found architectural drawings from an abandoned GDR industrial building form the starting point of the work. They refer to architectural projects that were never realized and their failed utopias.

Weichelt transforms the historical material by rearranging the cut-up drawings into grid structures, thereby creating imaginary spaces. The work asks what remains of past designs—and whether new, forward-looking ideas for architecture and ways of life can emerge from them.