Method for manufacturing objects using powder products

A method for manufacturing a target object, the method comprising:

• forming a shell containing powder and/or a sintered supporting pattern using an electron beam melting (EBM) technology, the shell comprising a densified and sealed enclosure corresponding to a target object, and the shell having a compensated shape that has a volume exceeding that of the target object;
• and
• subjecting the shell containing the powder and/or the sintered supporting pattern to a hot isostatic pressing (HIP) treatment or a pneumatic isostatic forging (PIF) treatment, the HIP treatment or the PIF treatment conforming the compensated shape to an expected shape of the target object and metallurgically bonding the shell to the powder and/or the sintered support pattern within the sealed enclosure, thereby forming the target object{circumflex over ( )}
• wherein the shell comprises an outermost layer, the outermost layer having a density level of greater than 95%:
• and
• wherein the shell comprises at least two layers, and the density levels of the at least two layers gradually reduce from outside to inside.