Process for coating substrates with aperture(s)

A coating method, comprising:

• additively manufacturing a hollow member on a portion of a surface of a component having at least one aperture formed in the surface, the hollow member defining a space above the at least one aperture, the portion of the surface being adjacent to the at least one aperture, the hollow member having an inner peripheral geometry complementary to a peripheral geometry of the at least one aperture and an open end;
• applying at least one coating only over the surface of the component around the hollow member to form an applied coating on the surface of the component having an applied coating thickness;
• wherein the applying the at least one coating includes applying the at least one coating only around the hollow member;
• and
• removing a portion of the hollow member to make a top portion of the hollow member coplanar with the applied coating to expose the space through the applied coating,
• wherein a lower portion of the hollow member remains to define the space through the applied coating.