Inline melt control via RF power

A method of operating an apparatus, comprising:

• operating a first induction coil at a first RF frequency to form a molten material in a horizontally oriented vessel;
• while operating the first induction coil, operating a second induction coil at a second RF frequency to contain the molten material within a melt zone defined by the first induction coil without using a physical barrier along an ejection path of the vessel, the second RF frequency being different from the first RF frequency;
• and
• ejecting the molten material from the horizontally oriented vessel and into a mold.

A method comprising:

• placing a material in a horizontally oriented vessel;
• powering a first induction coil comprising a plurality of coil turns at least partially surrounding the vessel, thereby forming a molten material;
• while powering the first induction coil, powering a second induction coil at least partially surrounding the vessel to contain the material within an area surrounded by the first induction coil, the first and the second induction coil being powered so that a frequency of operation of the first coil is not synchronized with a frequency of operation of the second coil;
• and
• molding the molten material into a bulk metallic glass (BMG) part.