Piping, used in sewing and crafting, is typically cut on the bias (diagonally at a 45-degree angle) to provide the necessary stretch and flexibility for navigating curves and corners. However, straight-grain cuts are suitable for projects without curves, potentially saving fabric.
Bias vs. Straight Grain Cutting
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Bias Cut: The bias cut is done at a 45-degree angle to the fabric's selvage edge. This provides maximum stretch and allows the piping to easily conform to curves and corners. This is the preferred method for most piping applications.
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Straight Grain Cut: This involves cutting the fabric along the length or width of the fabric, parallel to the selvage edge. Straight grain cuts have minimal stretch, making them suitable only for straight-edged applications. It can be a more economical way to cut piping as it wastes less fabric.
Why Bias Cutting Matters
The bias cut provides essential stretch, allowing piping to be:
- Easily shaped around curves and corners in sewing projects.
- Less prone to puckering or distortion when applied.
- More durable in areas subject to stress or movement.
When to Use Straight Grain
If your project features only straight lines and edges, straight-grain cutting is an acceptable alternative. It conserves fabric but lacks the flexibility of bias-cut piping.
In summary, the best way to cut piping depends on your project's design. Bias cutting is generally recommended for its superior flexibility, while straight-grain cutting can be used for straight-edged applications.
