Reading a Pareto of sewing defects without blaming the operator

A ranked list of sewing defects — skipped stitches, broken stitches, pucker, raw edges, wrong label — is one of the few drawings a Friday meeting understands at a glance. It is also a trap. The tallest bar is often “operator.” That word ends the discussion and leaves the needle, the lot, and the folder untouched.

Split the bar before you print it

If pucker is the tall bar, ask whether it sits on one fabric, one operation, or one machine ID. In a Gori hall we visited, the pucker bar was almost entirely a stretch waistband on a single lockstitch that had the wrong foot. The operators on that chair had already complained. The weekly page had still said “sewing.” After the split, the meeting lasted twelve minutes and the foot was changed the same shift.

Needle holes that look like operator haste are sometimes a dull needle kept “because the new packet is in the office.” Broken stitches that cluster after lunch are sometimes a lot that dried over the break and a thread that does not like that dryness. None of that is visible if the Pareto is a list of people.

What we bring to a visit

We still rank defects. We refuse to print a rank that has no second column: lot, machine, or operation. If the tickets cannot support a second column, the briefing says the tickets are the first defect. That sentence is uncomfortable. It is more honest than a poster of names.

A mild caution: a ranked list can make a small but expensive defect look unimportant. A rare shade stain that ruins a packed carton may sit low on the count and high on the cost. When we draw a week, we show count and cost of repair or of reject side by side, even if the page looks less tidy.