Description of Invention: The Fire-Retardant and Machinable Fly Ash Geopolymer Composite 2.0 is an upgraded sustainable composite developed to enhance both fire safety and machinability. Incorporating fly ash–based geopolymer fillers within a glass fibre reinforced epoxy matrix, this innovation significantly improves fire resistance, thermal stability, and ease of drilling and machining. The geopolymer’s mineral content promotes char formation and heat insulation, while optimized filler ratios p