Glass is a durable, strong material widely used in structural or architectural applications, predominantly in flat, two-dimensional forms. However, modern architectural trends demand more complex, three-dimensional shapes, which are costly and wasteful to produce with current methods. Inspired by flexible moulds used in other materials, this thesis explores the potential of knitted basalt moulds for glass slumping, a process that could enable the creation of customizable, freeform curved glass components. Experimental research involved creating and testing hand-woven and CNC-knitted basalt moulds to identify the best material combinations for surface quality and geometric precision. Experiments indicated that employing lightweight textile molds comprised of continuous basalt fibers is a potential way for creating intricate glass structures. This novel technique offers the potential to enrich architectural fluidity and aesthetics designed with glass, despite certain limits in deformation control and sustainability. The research highlights both the possibilities and challenges of this innovative glass shaping approach.