The application discloses a system for filling holes in a drug delivery device, the system (80) comprising: a dispenser (82) adapted to deliver droplets or filaments； and a bushing (84) for holding the device (10) during the filling of the holes (12) in the device. An alternative system (90) is disclosed comprising: a mold (92) with an interior mold cavity (94) into which a liquefied agent may be delivered through an agent inlet (96), wherein the mold is configured such that a wire (70) can be passed therethrough.
