Directional solidification casting assembly and method

A directional solidification casting method, the method comprising:

• fluidly coupling a first open end of a feed line conduit with a container source of a molten metal;
• fluidly coupling an opposite, second open end of the feed line conduit with a directional solidification mold at a gating of the mold, the mold having an interior chamber with a shape of an object to be cast using directional solidification of the molten metal in a growth direction of the mold, the feed line conduit fluidly coupled with the gating in a downward direction oriented at an angle that is closer to the growth direction of the mold than to another direction that is perpendicular to the growth direction of the mold;
• positioning at least a downstream portion of the feed line conduit below the gating of the mold along the growth direction, the downstream portion of the feed line conduit extending between the second open end of the feed line conduit and an intermediate location in the feed line conduit between the first and second open ends;
• directing the molten metal into the mold via the feed line conduit;
• and
• casting the object in the mold using directional solidification.