A nested pattern, sometimes called a nest, shows every size of a graded piece layered on top of one another on a single sheet. It is the standard way to present and check a full size run, but reading one takes a methodical eye, since several lines crowd the same space. Knowing how to read a nest is essential for anyone working with graded patterns.
This article explains how nests are constructed, how to extract a single size, and how the nest itself reveals whether a grade is sound.
What a nest shows
A nest overlays all graded sizes around a common reference, usually aligned at a shared point or along a shared line. Each size is drawn in a distinct line style or color so the layers can be told apart. The result looks like a set of concentric outlines fanning out from the base size.
The value of the nest is that it lets you see the whole grade at once and judge its consistency at a glance.
Reading the legend first
Before anything else, find the legend that maps each line style or color to its size. Mixing up two adjacent sizes is the most common nest-reading error, and the legend is your defense against it. Note also the alignment reference, so you know what point or line the sizes are nested around.
Only once you are sure which line is which should you begin to trace or measure.
Tracing a single size
- 1.Identify your size's line style from the legend.
- 2.Place clean paper over the nest, or work on a copy, never the master.
- 3.Follow only your size's line around the entire piece, including internal markings.
- 4.Transfer notches, grainline and drill points for that size.
- 5.Lift and check the traced piece is complete before cutting.
Pro tip
Use a colored pen matching your size as you trace, so you do not drift onto an adjacent size's line on a tight curve.
Verifying the grade from the nest
A good nest is itself a diagnostic. The grow lines connecting equivalent points across sizes should fan out evenly; uneven spacing between sizes signals an inconsistent grade. Cardinal points should march outward in a smooth progression rather than jumping.
If two sizes cross or bunch where they should run parallel, the grade has an error at that point worth investigating before production.
Nests in digital workflows
Digital patterns store the full graded run as data, and a nest is one way to visualize it. When exported, a graded set can be delivered as a nest for checking or as separate per-size pieces ready to cut. Made-to-measure work sidesteps the nest entirely, since each customer receives a single size; Minerva Patterns delivers individual DXF AAMA, PLT and PDF files rather than a graded nest for that reason.
Why trace rather than cut the nest
Cutting directly into a nested printed pattern destroys every other size on the sheet. Always trace your size onto separate paper and keep the nest intact, so the full range remains available for other sizes, blends between sizes, or future reference.
Frequently asked questions
What is a nested pattern?
A nested pattern shows every graded size of a piece layered on one sheet, each in a distinct line style or color, so the whole size run can be seen and checked at once.
How do I trace one size from a nest?
Identify your size in the legend, lay clean paper over the nest, and follow only that size's line around the piece, transferring its notches, grainline and drill points before cutting.
Can I check a grade just by looking at the nest?
To a degree, yes. Even spacing of the grow lines and a smooth outward progression of cardinal points indicate a consistent grade; crossing or bunching lines flag an error.
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