 The research conducted in the paper highlighted the importance of pressure or holding pressure in the mold cavity as a critical production parameter in the high pressure dye casting process for AL-C alloys. It was found that increasing the pressure or holding pressure in the mold cavity led to an increase in ultimate tensile strength and a decrease in porosity, resulting in fewer defects and improved quality. This suggests that controlling the pressure or holding pressure in the mold cavity can significantly improve the mechanical properties of the castings, which is essential for achieving the desired quality standards. This article was authored by Uri Rusbarsky and Stefan Gasper.