Hand Blind Hem with Tremor and a Scorch
A Divyang worker with a hand tremor and limited neck rotation hand-stitches blind hems on 20 polyester crepe sarees. Each hem is 4 cm deep; the fabric has 2% shrinkage; the thread is 60/2 cotton; the needle is size 9; stitches measure 6-9 mm and are uneven. The work table is 5 cm too high, the lamp is behind the worker, and each saree takes 55 minutes against a 30-minute target. The first 5 sarees show hem stitches visible on the right side and one iron scorch at 150 degrees C. The worker can grip the fabric but cannot hold a small template steady for long. The unit must deliver all 20 sarees in 3 days and cannot replace the worker. Decide the hand stitch, hem preparation, ironing and ergonomic changes, and the quality check to use before the remaining 15 sarees are sewn.
1. Which hand stitch and hem preparation would you specify, and why are the current 6-9 mm stitches and cotton thread unsuitable?
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Use a blind hem stitch, often called a blind catch stitch, worked so the needle picks up only one or two yarns of the garment and then passes inside the hem fold. Stitches should be 3-4 mm long and fairly loose. The current 6-9 mm stitches are too long and variable, so they catch the face of the saree and show on the right side; uneven spacing also makes the hem pull.
Cotton 60/2 thread on polyester crepe is a poor match because the two fibres can shrink and age differently, and the cotton may show as a light line. Use a fine polyester or silk thread matched to the fabric. Pre-shrink or steam the hem allowance if the saree has not been shrunk; mark a uniform 4 cm hem with clips, press the fold, and keep the fabric relaxed rather than stretching it while stitching.
2. What ergonomic and accessibility changes would you make for the tremor, neck rotation and 55-minute time?
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Lower the table by 5 cm or raise the chair so the elbows are near 90 degrees and the work is about 25-30 cm from the eyes. Put the lamp in front and slightly to the left, not behind, and add a magnifier if needed. A footrest and forearm support reduce tremor fatigue. Clamp the hem area or use a weighted block so the worker does not have to hold a small template steady; mark the 4 cm depth with a clip-on gauge instead.
Allow short work periods with breaks, pre-thread several needles, and batch the pressing. The 30-minute target may be unrealistic at first; set an interim target such as 40-45 minutes and judge by acceptable quality, not speed alone. Do not force neck rotation; turn the saree on the table instead.
3. What ironing and final quality check would you use before the remaining 15 sarees?
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Polyester crepe should be pressed at low temperature, about 110-120 degrees C, with a press cloth and a test on a scrap first. The 150 degrees C scorch shows the iron was too hot or used without a cloth. Press the hem from the inside, keep the iron moving, and avoid pressing sharp creases into the crepe.
Final check every saree: no stitches visible on the right side; hem depth 4 cm plus or minus 0.3 cm; stitches 3-5 mm and evenly spaced; no puckering or pulled yarns; no scorch or shine; thread tails secured inside the hem. Inspect all first 5 corrected sarees, then every saree before packing. Record the iron temperature and the result. If a scorch occurs, reject the piece rather than covering it.