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Computerized embroidery machines utilize specific input files that provide instructions on how to sew a design onto fabric. These digital files are known as embroidery designs or stitch files. A stitch file consists of a comprehensive list of stitch coordinates, color changes, and trim commands. The process of creating these files is called embroidery digitizing. Designs can be developed from photographs, artwork, lettering, or original concepts. The stitch file serves as the essential link between a digital concept and the physical embroidery produced by the machine.
Digitizing a machine embroidery design requires specialized software. These applications automate much of the work involved in generating individual stitches. The user's primary responsibility is to define the objects and assign specific stitch styles to fill them. Although the final output is consistently a stitch file, the digitizing process and methods can vary. Different applications offer specialized tools tailored to various types of embroidery digitization.
Left: An object contour created with nodes and curves. Right: Stitches generated to fill the defined object.
While it is possible to draw individual stitches manually, digitizing typically involves creating object contours that the software then fills with stitches. Users can also utilize tools like the "magic wand" to auto-trace objects from raster images. The process of drawing or tracing these contours is known as vectorization. If a ready-made vector file (such as an SVG) is available from a graphic design program, it can be converted directly into an embroidery design, bypassing the need for manual vectorization.
Creating an embroidery design from objects results in an intermediate product: a source file containing vector contours. These contours are eventually filled with stitches and saved into the specific stitch file format required by an embroidery machine. In Embird, this process is called compilation. The source file should be retained for any future editing, as vector files are scalable; during compilation, the software automatically adjusts the stitch count and layout to fit the chosen dimensions.
The workflow from raster image through vectorized outlines to generated stitches. The source file stores these elements in organized layers.
While the primary Embird program works mostly with stitch files, Studio utilizes vector objects to streamline design creation. Stitch files contain coordinates for every needle penetration and specific machine commands, making stitch-by-stitch editing a tedious process. In contrast, Studio uses tools similar to vector graphic programs, allowing users to draw contours that are then filled with uniform stitch types.
A significant difference between embroidery design and standard vector graphics is the importance of object order and overlapping. In embroidery, objects must be strategically connected to minimize thread trims, which can impact both design quality and production time.
Vector files created in Studio function as "source files". When compiled and sent to Embird Editor, they generate stitch files ready for the specific format compatible with an embroidery machine. Because they are vector-based, these designs can be resized easily as the stitches are automatically re-generated to fit the new dimensions.
Patterns are digitized in Studio as vector contours, with stitch layouts determined by object types and parameters. Compilation generates stitches for all objects, preparing the design for final adjustments in Embird's customization module.
To begin, review the tutorials located in the left panel of the Studio's help window, which are sorted in a recommended reading order. This help file also contains detailed descriptions of menu items and object parameters. Refer to the index for specific topics.
Embird utilizes two primary file types:
1. Stitch files: These are loaded directly into embroidery machines but are difficult to edit or resize accurately.
2. Vector files: These are easily edited and resized but must be compiled before use by an embroidery machine.
This is comparable to the difference between raster (pixel-based) images and vector graphics. Vector files (*.eof) are created and edited primarily in Embird Studio and serve as the blueprint for generating stitch files.
Stitch files contain a list of individual stitches and machine commands. Because they lack information about the underlying objects (like fills or outlines), automatic software adjustments are less reliable. Vector files, however, store the contours and the parameters required to generate stitches, allowing for precise control and high-quality scaling.
Efficient designs minimize thread trims. When working with vector objects, users should follow three basic principles:
In the example above, a column object and a fill object are linked by a connection object. The column ends at point B, and the connection moves the thread to point C (the start of the fill) to avoid a trim. The software then calculates the most efficient path to fill the remaining area, resulting in a continuous thread flow from the beginning of the design to the end.
Running stitches are standard stitches embroidered in a continuous series, typically between 0.5 mm and 5 mm in length. When the machine must move to a new, non-adjacent position, it uses a jump stitch. A jump stitch is a move command where the needle does not sew, though the machine still penetrates the fabric at the start and end of the move.
Most embroidery machines have a physical limit for the longest possible running stitch (typically 12.1 mm to 12.7 mm). For satin stitches exceeding this limit, Embird encodes them as a series of jump stitches ending with a single running stitch. While these may appear as dashed lines on screen, they sew correctly on the machine. Note that very long satin stitches (exceeding 8-10 mm) are prone to damage during washing. Therefore, using a texture or pattern to split long stitches is recommended.
Arrow (1) indicates a standard running stitch. Stitches exceeding the machine limit are divided into jump stitch series (2) and a short running stitch (3).
Most embroidery machines move in increments as small as 0.1 mm. Stitch files are coded based on this 0.1 mm grid. At high zoom levels, you may notice small steps on edges that otherwise appear smooth; these are a result of this coordinate grid.
Stitch density in Embird is defined as the distance between needle points on the 0.1 mm grid. A density of 4.0 corresponds to 0.4 mm spacing. Common densities for satin and fill stitches range between 3.0 and 4.0, depending on the thread weight. Because the 0.1 mm grid cannot be subdivided, a density of 3.5 represents an average distance, with some points 0.3 mm apart and others 0.4 mm apart.
A complete list of Studio help files is available via Main Menu > Help. You can also use the F1 key on a hardware keyboard to access the main User Guide. Specialized help buttons within dialog boxes provide context-specific information relevant to that window.
Note: The help window allows for the export of documentation, which can be easily converted into PDF format.
