Check-Matching and Marker Planning on 2.5 Metres of Windowpane Check
A unit is cutting a men's shirt, chest 102 cm, from 2.5 m of 112 cm windowpane check with a 4 cm repeat. The check must match at the centre-front placket, chest pocket, yoke seam and side seams. The fabric has a slight one-way nap. Without matching, the marker needs 2.15 m; aligning the check consumes approximately one extra 4 cm repeat for each of the 12 pattern pieces involved. Seam allowance is 1.5 cm. In the previous batch the yoke was cut on bias, the pocket was off-grain, side seams were 2 cm out of match, and fused collar stands bubbled after fusing. The unit has 2.5 m in the required shade and no additional metreage in the same dye lot; a plain white poplin of similar weight is available. The cutter must decide the layout before the fabric is spread, because the check cannot be shifted once cut.
1. Is 2.5 m sufficient? Show the calculation and give two feasible cutting decisions.
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Base consumption 2.15 m. Matching allowance: 12 pieces × 0.04 m = 0.48 m. Subtotal 2.63 m. Add end loss and a 2% cutting allowance: 2.63 × 1.02 ≈ 2.68 m, or about 2.7 m. 2.5 m is short by 0.18-0.20 m, so cutting all 12 pieces from the check is not feasible. Decision 1: cut the hidden inner yoke, the pocket and the collar stand from the plain white poplin. That removes three pieces from the check, saving their matching allowance (3 × 4 cm = 12 cm) plus their base area; the visible outer yoke, collar leaf, cuffs, fronts, back and sleeves still match. The plain inner yoke is hidden, the pocket is a design contrast, and the collar stand is mostly covered by the collar. Decision 2: if the buyer refuses contrast, do not squeeze the marker; return the 2.5 m and buy 2.8 m of the same dye lot. Do not reduce seam allowance to 1 cm to save cloth; that will cause seam failure.
2. Set out the marker sequence and the check-matching points you will inspect before cutting.
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Spread the fabric face up, one way, with the nap running the same direction on every piece; do not turn pieces 180°. Place the back on the fold first, aligning a prominent check line with the centre back. Place the two fronts so that the same check line falls on the centre-front placket edge; left and right must be mirror images. Place the yoke so its lower edge matches the back's check at the seam line, not the cutting line. Place the pocket on the front so its check continues the front check; mark its position before cutting. Place sleeves so the check at the cap notch matches the front and back armhole notches; cuffs match the sleeve. Mark side-seam notches at the same check line. Check grainline: every pattern piece parallel to the selvedge; if the check is skewed, do not force it. Before cutting, photograph the marker and measure the repeat at each seam. Cut with sharp shears, using weights rather than pins so the check does not distort. Cut the outer yoke and pocket only after the front is cut.
3. Diagnose the bubbling on the fused collar stands and state the correction.
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Bubbling after fusing usually comes from one of four causes: too high a temperature, too short a dwell time or uneven pressure, moisture trapped in the interlining, or fusing a piece after it has been cut and handled so the interlining and cloth shrink differently. A resin-coated interlining also needs the resin side against the fabric, not the iron. Correction: test on a 10 cm scrap of the same poplin and interlining at 150 °C for 10-12 seconds, with a press cloth, no steam; let it cool flat before moving. Fuse the collar-stand cloth before cutting, not after; use a roller or hand press with even pressure; do not drag the iron. If the stand is already bubbled, do not try to press it out; recut the stand and fuse a fresh piece. Check the interlining's shrinkage against the shell; if it is more than 1%, change to a matched interlining. Record the temperature and time on the work card for repeat orders.