Pfaff 261 Owner's Manual - Page 15

Types of Fabrics Mercerized Silk Cotton Needle Size Fine Fabrics 80 such as georgette. chiffon, batiste, to voile, lawn, silk. 100 0 to 000 twist 60 or 70 Lightweight Fabrics 70 such as dress silks and cottons, to A& B 80 sheer woolens, shining, dra- twist peries. Medium Fabrics 50 such as lightweight woolens, to B&C 90 madras, muslin, brocades, heavy 70 twist silks and rayon, gabardine. Heavy Fabrics such as coating, denim, corduroy, I 40 to slipcover fabrics, bed tickings, 50 lightweight canvas. C&D 100 twist Very Heavy Fabrics such as heavy tickings, canvas, overcoating, sailcloth, upholstery. Synthetics, Rayon, Acetate including nylon, orion, dacron, plastics, etc. 24 90 to E to 40 twist 110 Determined by weight of fabric 40 to 50 Determined byfhreadsize 60 to 80 Recommended Needle and Thread Sizes The appearance of the finished seam is dependent on the correct relationship between needle, thread and fabric. Select the proper thread sizes and needles from this chart. The same size fhreads should be used in the needle and on the bobbin. Some experienced seamstresses prefer a somewhat hinner bobbin thread. However, the bobbin thread never should be thicker than the needle thread. 14