The invention is a cartridge (1) for a stereolithography machine, comprising: a container (2) provided with an access opening (3) and with a transparent bottom (4) opposite the access opening (3)； a reservoir (5) suited to contain a liquid or pasty base material, unremovably associated with the container (2)； valve means (6) suited to allow the passage of the base material from the reservoir (5) to the container (2), configured to open when the difference between the pressure present in the reservoir (5) and the pressure present in the container (2) is at least equal to a predefined value and to close spontaneously when the pressure difference is lower than the predefined value, the reservoir (5) comprising tight connection means (7) for connection to an external air feeding device (8).本發明係一種光固化機的匣(1)，該匣包含：一容器(2)，具備一出入開口(3)及一相對於出入開口(3)的透明底部(4)；一貯存器(5)，適合內含一液態或漿態基材料，不可移除地結合容器(2)；閥手段(6)，適合容許基材料從貯存器(5)通到容器(2)，當出現在貯存器(5)的壓力和出現在容器(2)的壓力之間的壓力差係至少等於一預先界定值時設置成打開且當壓力差係小於預先界定值時設置成關閉，貯存器(5)包含緊連接手段(7)，用於連接至一外界的空氣進給裝置(8)。
