A frame for manufacturing die cast parts comprises a cover half and an ejector half cooperating with each other for die casting a part, the cover half and the ejector half having a closed position for die casting the part and an open position for ejecting the die cast part. The ejector half includes an ejector for ejecting the die cast part. The cover half and the ejector half each comprise a plurality of stacked plates that provide first and second pockets, respectively cooperating with each other to form a closed pocket when the cover and ejector halves are in the closed position. A plurality of cooperating mold blocks for defining a cavity for receiving die cast material are removably secured in the closed pocket and internal passageways in the cover and ejector halves are removably connected to the mold blocks for conveying cooling fluids thereto.