Braze method to modify a passage

A process of modifying a passage in a component, the process including:

• inserting a first material into the passage;
• blocking a first end of the passage with a first member;
• partially blocking a second end of the passage with a second member, the second member including a hole;
• inserting an elongated member through the hole of the second member until the elongated member abuts the first member;
• heat treating the passage, the first material, and the elongated member to form a solid interior in the component;
• and
• machining through the solid interior to form a modified passage in the component.

A process of modifying a cooling passage in a shroud of a turbomachine component, the process including:

• inserting a braze into the cooling passage;
• blocking at least one end of the cooling passage;
• inserting a rod into the cooling passage through the braze to compress the braze in the passage;
• heat treating the cooling passage, the braze, and the rod in a thermal brazing cycle to form a solid braze interior in the shroud;
• and
• machining through the solid braze interior to form a modified cooling passage in the shroud;
• and
• wherein inserting the braze into the cooling passage includes inserting the braze by applying negative pressure to the passage to pull braze into the passage and further inserting the braze into the passage from a positive displacement braze applicator.