Brother International XL-2027 Users Manual - English - Page 9

Tension controls ■ Upper tension is too tight. Locks appear on the fabric surface. OO Reverse Surface ■ Upper tension is too loose. Locks appear on the reverse side of the fabric. Reverse Surface Upper Tension Dial Decrease tension Lower number. or Upper Tension Dial Increase tension. Raise number. or '3 Bobbin O 0 Increase tension Bobbin Ov Decrease tension 13 Correct tension Reverse Surface Correct tension is important because too much or too little tension will weaken your seams or cause puckers on your fabric. RELATIVE CHART OF SEWING FABRICS, NEEDLE AND THREAD SEWING MATERIALS NEEDLE SIZES Fine tricot, Fine lace, VERY THIN Thin linen, Silk, Tulle, 9 Chiffon Organdy, Jersey, Voile, LIGHTWEIGHT Taffeta, Synthetics, Silk, 11 Batiste MEDIUM Cotton, Gingham, Poplin, Percale, Pique, Satin, Velvet, Lightweight wool, 14 Fine corduroy, Suitings HEAVY Denim, Gabardine, Tweed, Corduroy 16 THREAD SIZES Cotton: 80 Synthetic Fine Mercerized Cotton Cotton: 60 - 80 Silk: "A" Synthetic Mercerized 50 Cotton: 50 60 Silk: "A" Synthetic Mercerized 50 60 Cotton: 40 - 50 Mercerized Heavy Duty NOTE: 1. Select the correct needle and thread size from the above chart. 2. Use the same size thread for the upper and lower threads. 14