Record shape, time and trigger Show what moved, when it appeared and under which free condition. Shape class Record: One-edge lift, full-width cup, twist or combined form Project detail: ____________________ Confirm: Photograph face, reverse and end-on Timing Record: Off-roll, after relaxation, after process or after storage Project detail: ____________________ Confirm: Retain labelled samples by stage Conditioning Record: Rest time, temperature, humidity and absence of hand tension Project detail: ____________________ Confirm: Repeat the agreed relaxed setup Location Record: Left/right edge, face direction and roll position Project detail: ____________________ Confirm: Mark orientation before cutting Trigger Record: Heat, moisture, coating, sewing, winding or packaging condition Project detail: ____________________ Confirm: Run exposed and control pieces Assembly effect Record: Feeding, seam appearance, contact, lift and usable width Project detail: ____________________ Confirm: Build the actual assembly Method and limits are project-defined. A symptom narrows the investigation but does not prove one cause. Sinicwebbing — https://www.sinicwebbing.com