A manufacturing method (S) of a metal ingot by semi-continuous casting, said metal ingot comprising a titanium-based alloy or a titanium-based intermetallic composite, said method comprising the following steps: S1: melting of all or part of the metal to obtain molten metal , S2: transfer by flow of the molten metal into a crucible , said crucible having a bottom plate and at least one side wall together delimiting an enclosure configured to receive the molten metal , the side wall having a first width (L1) along a first axis (X1), S3: displacement of the bottom plate relative to the side wall at a controlled speed depending on a flow speed of the molten metal and, S4: progressively solidification of the molten metal from the bottom plate of the crucible , the manufacturing method (S) further comprising : - during step S3 of displacement of the bottom plate , a step S5 of application of a compressive force to the metal which is between the bottom plate and the side wall , said compressive force being applied by at least one press , each press comprising a pair of opposing hammers moving along a same direction intersecting a longitudinal axis (X) and whose movement is synchronised, along a second axis (X2) parallel to the first axis (X1) so as to deform said metal and obtain an ingot having a second width (L2) along this first axis (X1) which is less than the first width (L1), and - during step S5, the bottom plate is also deformed, and the pair of hammers is moved along the longitudinal axis (X) at the same speed as the bottom plate in order to follow the intermediate ingot when the compression force is applied and to eject it downwards, before returning to their initial position, - a subsequent step (S7) of cutting the base plate . S1: melting of all or part of the metal to obtain molten metal , S2: transfer by flow of the molten metal into a crucible , said crucible having a bottom plate and at least one side wall together delimiting an enclosure configured to receive the molten metal , the side wall having a first width (L1) along a first axis (X1), S3: displacement of the bottom plate relative to the side wall at a controlled speed depending on a flow speed of the molten metal and, S4: progressively solidification of the molten metal from the bottom plate of the crucible , - during step S3 of displacement of the bottom plate , a step S5 of application of a compressive force to the metal which is between the bottom plate and the side wall , said compressive force being applied by at least one press , each press comprising a pair of opposing hammers moving along a same direction intersecting a longitudinal axis (X) and whose movement is synchronised, along a second axis (X2) parallel to the first axis (X1) so as to deform said metal and obtain an ingot having a second width (L2) along this first axis (X1) which is less than the first width (L1), and - during step S5, the bottom plate is also deformed, and the pair of hammers is moved along the longitudinal axis (X) at the same speed as the bottom plate in order to follow the intermediate ingot when the compression force is applied and to eject it downwards, before returning to their initial position, - a subsequent step (S7) of cutting the base plate . <EOS>