A method and a system is provided for joining a filler material (12) to a substrate material (16). The method includes melting the filler material within a melting chamber (26) of a crucible (22) such that the filler material (12) is molten, holding the filler material within the melting chamber (26) of the crucible (22) by electromagnetically levitating the filler material (12) within the melting chamber (26), and releasing the filler material (12) from the melting chamber (26) of the crucible (22) to deliver the filler material (12) to a target site (18) of the substrate material (16). The system for joining a filler material (12) to a substrate material (16), comprises a crucible (22) having a melting chamber (26) for holding the filler material (12). The crucible comprises an outlet (44) fluidly connected to the melting chamber (26), a heating element (20, 20a) operatively connected to the crucible (22) for heating the filler material (12) within the melting chamber (26) of the crucible (22), the heating element (20, 20a) being configured to melt the filler material (12) within the melting chamber (26) such that the filler material (12) is molten and a flow control mechanism (74) operatively connected to the crucible (22) for controlling flow of the filler material (12) through the outlet (50) of the melting chamber(26), the flow control mechanism (74) being configured to electromagnetically levitate the filler material (12) within the melting chamber (26) to hold the filler material (12) within the melting chamber (26).