Auxiliary Cutting Devices: Notchers, Drills, Slashers
Auxiliary devices transfer the marks and notches from a marker onto the edges or interior of garment parts, so sewing operators can align, place, and specially treat parts during assembly. With operator-controlled cutting it's the cutter's job to transfer these marks accurately; computer-controlled cutters mark parts during cutting. Three device families do the work.
i. Notchers (edge marking)
Notches are cut into a part's edge to align it with other parts during sewing. Ordinary cutting can make notches, but accuracy depends on the operator, specialised notchers are more precise.
| Notcher | How it works | Best for | Avoid on |
|---|---|---|---|
| Knife (cold) | Upright cylinder cuts a set-depth slit; straight or V | General | - |
| Hot | Heated element scorches a visible mark | Natural fibers, knits | Thermoplastics (melts plies together) |
| Ink | Leaves UV marking ink (visible under UV at the station) | Where no cut/scorch is wanted | - |
The hot notcher makes clearly visible marks that don't disappear and, used properly, doesn't cut, pucker, or ravel, but it will fuse thermoplastic plies.
Auxiliary Cutting Devices: Notchers, Drills, Slashers
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