A rotary die ejection technology is disclosed. A cylindrical die roll has a rotary cylinder having internal air and regulation channels. The outer surface of the rotary cylinder includes mold cavity or cutter cavity. The cavity may be in the form of a socket capable of receiving inserts, including plugs and tool inserts. The plugs and tool inserts may be partially or entirely constructed from a porous material. The mold cavity or cutter cavity is in fluid communication with the internal air channel.
