A misrun leaves part of a casting incompletely filled. A cold shut describes an imperfect union where metal streams meet. The two can arise in related filling circumstances, but they are not identical observations. Keeping the distinction clear helps the foundry investigate the right region and production sequence.

First establish what the casting failed to reproduce

Compare the affected area with the drawing and pattern geometry. Missing material at the end of a thin feature presents a different observation from a seam within a surface that otherwise appears complete. Record the position and extent before finishing alters the evidence.

The same commercial defect name is sometimes used loosely for both conditions. A report should include photographs and a precise description so the investigation does not depend on terminology alone.

Review the path taken by the metal

Long flow distances, local restrictions and the meeting of flow fronts can influence the affected region. Gate arrangement and pouring conditions should be examined together with the geometry. A proposed correction should explain which part of that route it changes.

Increasing temperature without understanding the mechanism is not a complete investigation. The alloy, mold conditions and process limits matter, and a change intended to improve filling can affect other aspects of quality.

Check whether the problem follows a repeatable pattern

Compare parts by assembly position, production batch and feature location. A consistent end-of-fill problem can provide a different clue from isolated irregular indications. Earlier records of patterns and molds may also help distinguish a filling issue from incomplete geometry created before pouring.

Where confirmation requires further examination, agree the method and preserve representative parts. A surface appearance alone may not establish the depth or consequence of an indication.

Verify the correction against the whole component

After an approved process or design change, confirm that the affected feature fills correctly and that dimensions and other quality requirements remain acceptable. Solving one visible problem should not be the only criterion for releasing the revised route.

Northeast Castings can discuss casting filling and inspection requirements using the component drawing and observed evidence. Clear identification makes corrective work more focused than treating every incomplete feature or seam as one generic pouring defect.