Trim Command
An instruction embedded in the stitch file that tells the machine to cut the top and bobbin threads before moving to the next stitch section.
A trim command pauses the machine briefly to cut both the top and bobbin threads. Without trims, every time the machine jumps from one part of a design to another, it would drag a connecting thread (a jump stitch) across the fabric, which then has to be cut by hand later.
Modern commercial embroidery machines have automatic thread trimmers built into each needle head. The trim command in the stitch file triggers these. Older machines, particularly home and entry-level commercial units, may not auto-trim, requiring the operator to manually clip threads between sections.
A digitizer places trim commands strategically. Too few trims and the finished garment looks messy with thread tails everywhere. Too many trims and the machine spends excess time stopping and starting, which slows production. The standard practice is to trim any jump longer than about 5mm to 8mm and leave shorter jumps untrimmed because the cover stitching will hide them.
Trim commands also fire automatically at color changes. The machine cuts both threads before the operator swaps to the next color or the needle bar rotates to the next pre-loaded color. Some advanced machines have programmable trim sensitivity, allowing the operator to globally adjust how aggressive the trimming should be without re-digitizing the file.
Related Terms
- Stitch File →
- A digital file that contains the instructions an embroidery machine uses to stitch a design, including needle positions, color stops, and trim commands.
- Jump Stitch →
- A long, loose thread carried across the surface of the fabric when the machine moves from one stitched section to another without trimming.
- Color Change →
- A command in the stitch file that pauses the machine to switch from one thread color to the next, or signals an automatic needle change on multi-needle machines.
- Top Thread →
- The decorative embroidery thread loaded on the top of the machine, which is the thread the customer sees in the finished design.
- Bobbin Thread →
- The thinner thread loaded in a small spool beneath the needle plate, which locks the top thread on the back of the fabric.