Generally, cold shuts are most likely when creating a piece with some kind of corner or sharp edges. This phenomenon can occur in a few ways and is commonly seen when working with edges. If you want to see a visual representation of a cold shut, check out this video- it provides an illustration of how this problem occurs.Ī cold shut will occur when a section of metal overlaps the parent bar when shaped, and then the overlap is worked back into the parent bar. Moreover, they are not visually appealing and can be tedious to manage. They are problematic because they can cause your pieces to break and crack earlier than expected because they compromise the structural integrity, making it less stable and strong. Basically, cold shuts manifest as cracks and lumps in your piece’s metal, as the metal folds over itself when it is improperly fused during forging. Cold ShutsĬold shuts in blacksmithing are also known as laps or folds. This article will provide thorough information about what a cold shut is, why it occurs, and how to prevent it so you can create clean pieces with minimal error. In blacksmithing, a cold shut is a defect in welding that occurs when metal folds over itself during forging, either as the result of misaligned surfaces intersecting or as a result of welding at too low or high a temperature. If you are a blacksmith, you have probably heard the term but may not know what it is or how to prevent it. Cold shuts are one of the most common errors in blacksmithing and frequently occur during welding.
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