A squad number or club letter the size of a hand, stitched as solid fill, takes a long time on the machine and leaves a heavy, stiff patch on a lightweight training top. Appliqué puts a piece of fabric in that space and stitches only where it needs holding and finishing.
Each fabric piece needs three stops in the file. The first marks the position, the second tacks the fabric down and the third covers the cut edge. Merge them and the machine never pauses to let the operator lay the fabric.
For club kit, see how we handle squad numbers across a teamwear order; for school and college lettering, schoolwear files; and for large marks across the back of a coat, back-of-jacket designs.
The PDF cutting template comes at exact finished size, so pieces cut in your workroom match the outline the tack-down stitches, whether they are cut with scissors, a plotter or a laser.