Mesh Tool - 4. Celtic Knot Parameters

This is a sub-chapter of the Mesh Parameters chapter.

Celtic knots are a traditional form of decorative knotwork and interlaced patterns. Their most defining feature is the use of continuous, interwoven lines that create the appearance of a path with no beginning or end.

This page details the Celtic Knot parameters available within the Mesh tool of Embird Studio NEXT. This guide explains how to create complex knotwork embroidery fills by configuring settings such as knot shape (round, angular, or combined), strand thickness, and individual knot size. It also covers the Unweave structure density, fill span relative to object boundaries, and options for aligning knot grids across multiple design elements.

Shape - Select between round, angular, or combined configurations for the knot geometry.

Thickness - Controls the width of the strands that form the knotwork mesh.

Size - Defines the physical dimensions of an individual knot, as measured in the following illustration.

Structure > Unweave - Increase this value to generate a higher density of individual knots within the fill area.

Span - Determines the extent of the knot fill relative to the object contours. Possible values include Overflow, Cropped, and Interior. When using the Overflow setting, object contours can be excluded from the mesh via the Common Settings tab.

Align to Common Grid - This option allows knots in separate objects to align to a unified global grid. For this alignment to function correctly, the objects must share the same knot size, and no effects or transformations should be applied.

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Embird Studio NEXT: Align to common grid

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Aligned to common grid

The Align to Common Grid setting is essential for maintaining pattern continuity across a design composed of multiple separate objects. Without this setting, each object generates its fill based on its own internal coordinates, which often leads to mismatched patterns where objects meet.

The Problem: Fragmented Patterns

When digitizing a large Celtic knot or cross-stitch area using several smaller vector shapes, the software naturally treats each shape as an independent container:

Default Behavior: Each object calculates the placement of its knots or crosses based on its own bounding box or origin point.
Result: Even if the objects are perfectly adjacent, the paths of the knots or the rows of the crosses will likely be offset, creating visible and unprofessional seams.

The Solution: Global Coordinate Synchronization

By enabling Align to Common Grid, you instruct the software to ignore individual object boundaries as the "zero point" for the pattern. Instead, the software utilizes a global coordinate system relative to the design hoop to calculate the pattern layout.

Seamless Transitions: Because all objects reference the same global grid, a pattern element that starts in one object will continue perfectly into the next.
Visual Unity: This is critical for large background fills or split designs where a single cohesive texture must appear uninterrupted across the entire embroidery field.

Requirements for Successful Alignment

For the alignment to function correctly, the objects must share identical geometric properties. The grid synchronization will fail if any of the following parameters differ:

Uniform Size: The Size parameter of the knot or cross must be exactly the same for all objects intended for alignment.
No Transformations: You cannot apply Rotation, Skew, or Perspective to individual objects, as these operations warp the local grid and move it out of sync with the global coordinates.
No Effects: Applying an effect such as Fish Eye or Swirl to any of the objects will cause the patterns to diverge at the boundaries.

Workflow Tip: To ensure consistency, select all objects that should share a pattern and apply the Align to Common Grid setting simultaneously in the Parameters dialog. If you need to shift the entire unified pattern, use the Offset parameters within the Transformations tab.

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